Saturday 8 December 2018

Playing Fritz

After a lengthy absence, I played an online game against Fritz on chessbase.com and was going fairly well up until move 29 when I blundered. It's been a while since I inserted a game into a blog and you need to practise these techniques or else you quickly forget. So here goes.
[White "Sean"] [Black "Fritz Club Level"] [Result "0-1"] [Termination "voodooguru23 resigned"] 1.Nf3 d5 2.e3 Nf6 3.c4 c6 4.d4 e6 5.Nc3 Nbd7 6.Be2 Nb6 7.b3 Nbd7 8.0-0 b6 9.Bb2 Bb4 10.Qc2 Bb7 11.Bd3 0-0 12.a3 Be7 13.b4 c5 14.bxc5 bxc5 15.cxd5 exd5 16.Rab1 c4 17.Be2 Qb8 18.Nd2 Qc7 19.e4 dxe4 20.Ndxe4 Bxe4 21.Nxe4 Nxe4 22.Qxe4 Rae8 23.Qc2 Bd6 24.g3 Rc8 25.Qc3 Rfe8 26.Bf3 Nf6 27.Rfe1 Rxe1+ 28.Rxe1 Rb8 29.Re2 Rb3
OK, looks like I've succeeded. Reviewing the game, I simply didn't see the black rook sweeping down to b3. However, if I'd taken the time to tuck my white-squared bishop into the fianchettoed pawn position that was already set up, I might have had a chance. As it turned out, I lost a piece outright and it was all over really. Even if I move the queen to e1 and threaten problems on the black's back rank, the move Qb8 is decisive. Ah well. I should keep practising and remember not to leave pieces completely undefended because they then become targets for attack. In this case, my queen was attacked and the undefended white bishop. I couldn't save both. Below is a continuation after I retracted my losing move and in which I manage to secure a draw by perpetual check. I should practise inserting comments into games as well.
[White "Sean"] [Black "Fritz Club Level"] [Result "1/2-1/2"] 1.Nf3 d5 2.e3 Nf6 3.c4 c6 4.d4 e6 5.Nc3 Nbd7 6.Be2 Nb6 7.b3 Nbd7 8.0-0 b6 9.Bb2 Bb4 10.Qc2 Bb7 11.Bd3 0-0 12.a3 Be7 13.b4 c5 14.bxc5 bxc5 15.cxd5 exd5 16.Rab1 c4 17.Be2 Qb8 18.Nd2 Qc7 19.e4 dxe4 20.Ndxe4 Bxe4 21.Nxe4 Nxe4 22.Qxe4 Rae8 23.Qc2 Bd6 24.g3 Rc8 25.Qc3 Rfe8 26.Bf3 Nf6 27.Rfe1 Rxe1+ 28.Rxe1 Rb8 29.Rc1 Qb6 30.Rc2 Qc7 31.Bc1 h6 32.Bg2 Re8 33.Be3 Qb8 34.Qxc4 Qb1+ 35.Rc1 Qb2 36.a4 Ng4 37.Rc2 Qa3 38.Rc3 Qb2 39.Rc2 Qb1+ 40.Rc1 Qb2 41.Rc2 Qb1+ 42.Rc1 Qb2 43.Rc2 Qa3 44.Rc3 Qb2 45.Rc2 Qb1+

Friday 14 September 2018

SMS via Email

Who said you can't teach an old dog new tricks? I was vaguely aware that it was possible to send an SMS via Email but I'd never had the need to do so up until today and so I'd never tried. However, being in Indonesia and using a local mobile phone network provider, I found that I wasn't able to send an SMS to Australia for whatever reason.

It was then that I read of the possibility of sending an SMS via Gmail provided one knew the SMS Gateway email address of the service provider associated with the phone number. To find the service provider, I used 160.com.au (the interface is shown in Figure 1):

Figure 1
Once I entered the number, I discovered that the service provider was Optus. It was then just a question of finding the SMS Gateway address of Optus. For this I used email2sms.info as shown in Figure 2:


As can be seen, there's no need for the international code prefix and there's a reminder to add a 0 when omitting this. I then sent my SMS/Email via Gmail and the message was sent. Currently I'm waiting for a reply.

POSTSCRIPT: this is the message I got back from Gmail at 11am today (Saturday 15th of September). The original email was sent on Friday, 14th September 2018 at 10:36:38 (Jakarta time +0700):

Gmail will try for a couple more days but I'd say that the message is not going to go through.

POST-POSTSCRIPT: as anticipated, it didn't make it. Ah well, so it goes.

Thursday 16 August 2018

IELTS and TOEFL

Recently my 15 year old granddaughter, an Indonesian citizen, was contemplating a course that prepared her to sit for an IELTS test. I thought it was time to remind myself what IELTS was all about. The following is copied from the website of the British Council that oversees the testing:
What is IELTS? 
The International English Language Testing System (IELTS) is the world’s most popular English language proficiency test for higher education and global migration, with over 3 million tests taken in the last year. 
IELTS assesses all of your English skills — reading, writing, listening and speaking, and is designed to reflect how you will use English at study, at work, and at play, in your new life abroad. 
The IELTS test is developed by some of the world’s leading experts in language assessment. It has an excellent international reputation, and is accepted by over 10,000 organisations worldwide, including schools, universities, employers, immigration authorities and professional bodies. 
IELTS is the most widely accepted English language test that uses a one-on-one speaking test to assess your English communication skills. This means that you are assessed by having a real-life conversation with a real person. This is the most effective and natural way of testing your English conversation skills.
This led me to wonder what online resources were available to prepare students for the IELTS test. Not surprisingly, the British Council itself provides copious preparatory material. Here is a link to the site. In particular, there is an app that can be installed on a smartphone:




There are lots of podcasts on iTunes that cater to preparation for IELTS e.g. the IELTS PODCAST. There are also a great many YouTube videos available as well. Here is a relevant video with the highest view count (7.5 million):




There are a plethora of books, downloadable PDFs and websites that are available as well. The problem with the resources supporting the IELTS is not one of scarcity but of largesse. Which of them to choose? Here are links to just two of the many sites that offer suggestions in this regard:
Again the problem with these sorts of suggestions is that there are just so many of them. However, as the first of the two previous sites explains:
The best place to start studying for IELTS are the Cambridge IELTS series of books. These are past papers published by Cambridge. Because Cambridge designs the IELTS exam, you know the information in these books is 100% accurate, and the exam tasks are similar to the ones you will see on the real exam. 
These books are in a series, from Cambridge IELTS 1 all the way to Cambridge IELTS 11, which was just released earlier this year. Each book contains four complete IELTS Academic exams, each with Reading, Listening, Speaking and Writing tests. There are also two General Training Reading and Writing tests as well. 
One of the best parts of these books is the answers to the writing task. At the back of the book there are sample answers for each Writing task. Some of these are high-scoring answers written by an examiner. Others are answers written by IELTS test-takers. These have a band score and comments by the examiner, to explain the score. 
You can buy these at bookshops in most countries or order them online. I recommend that you start with the most recent one–IELTS 11—and work your way backwards. Avoid IELTS 1 – 4. The test has been updated since then. While some of the material in these is useful, other materials are outdated and different from what you will see on the current exam.
Of course, the other popular English test is TOEFL (Test of English as a Foreign Language). As its website explains:
The TOEFL® Test Gives You an Advantage: Most Widely Accepted, Most Popular and Most Convenient Choice 

The TOEFL test is the most widely respected English-language test in the world, recognized by more than 10,000 colleges, universities and agencies in more than 130 countries, including Australia, Canada, the U.K. and the United States. Wherever you want to study, the TOEFL test can help you get there. 
So which is to be preferred? The following site offers some help:


The site then goes on to explain:
The TOEFL and IELTS exams are fairly different, and therefore some people will find that they are naturally better suited for one than they are for the other. You probably want to know which test you should study for. But before we discuss their similarities and differences, remember that both IELTS and TOEFL are standardized tests. This means that, with some coaching and practice (like we have in the Magoosh TOEFL free trial), you can learn to do well on whichever exam you decide to take. Let’s talk more specifically about each exam… 
The TOEFL is a language test for non-native English speakers, and is commonly used as an entrance exam at universities and graduate schools. Because of this, the TOEFL offers only academic English. On the other hand, the IELTS offers an academic option as well as a general test; this is generally the preferred test for immigration purposes to the UK and Canada. 
The IELTS academic test and the TOEFL compared to the IELTS general test are both more difficult, but they are usually the only options if you want to study at any level higher than secondary school. No matter which test you take, be aware that the scores all expire 2 years after your test date. (And if you’re curious, you can see how the scores on the two exams compare here). 
When you compare the format of the IELTS with the TOEFL format, you will notice a couple of things. First of all, both of them have four basic sections, each of which tests a basic skill (reading, listening, speaking, writing). But while the TOEFL only tests academic subjects, the IELTS academic option will have academic reading and writing sections combined with general listening and speaking sections. Overall, the IELTS has more of a real-world feel than the TOEFL. Deciding how hard the TOEFL is versus the IELTS truly depends on your English background. 

Friday 1 June 2018

Moodle4Mac

I finally got around to installing Moodle4Mac (version 3.5) once again on my MacBook Pro as well as the GIT tool for updating Moodle in the future. Using the latter, a double-click is all that is needed to get the newest Moodle without downloading the complete installation package anymore.

I still have my free online Moodle at MoodleCloud although I need to log in from time to time or else I get a warning that the site will be deleted. I've not made much use of it but I still like to maintain it.

I'd like to begin using my Moodle installation as an organisational tool to keep track of various projects that I'm embarked upon. In that way, I maintain familiarity with the interface and accomplish something practical at the same time.

Thursday 24 May 2018

Resolving WiFi Problems in MacOs

This is complete rewrite of an earlier post in which my purported solution to my Wi-Fi woes turned out to be ineffective. The specific problem concerned only certain networks, specifically the Wi-Fi in my Singapore hotel room and the Wi-Fi at Changi airport. The former required a password and my smartphone connected without a problem but my laptop seemingly connected without needing to supply a password. However, while connected to the Wi-Fi, my laptop would not connect to the Internet. At Changi, I likewise connected to the network but couldn't reach required site to insert my 5 digit password.

A suggestion provided on Tom's Hardware site at least solved the problem at Changi. Open System Preferences under the Apple logo and choose Network:


The suggestion was to click on minus sign in the diagram above while Wi-Fi is selected. Once the Wi-Fi option is deleted, restart the laptop and go back to above screen and click on the positive sign. Choose Wi-Fi from the drop-down menu and then try connecting again. It worked for me. This is something that I'd never tried before but I've now added it to my troubleshooting armoury.

Friday 6 April 2018

Pygmalion

A recent word of the day was pygmalionism, defined as sexual responsiveness directed toward a statue or other representation especially when of one's own making. A biographical note reads:
Greek mythological character. According to the most common version of the myth, Pygmalion was a king of Cyprus and a sculptor who created a beautiful ivory statue representing his ideal of womanhood. He then fell in love with his own creation. In answer to his prayer the goddess Aphrodite brought the statue to life. Source.
Wikipedia goes to say that:
Pygmalion is most familiar from Ovid's narrative poem Metamorphoses, in which Pygmalion was a sculptor who fell in love with a statue he had carved. In Ovid's narrative, Pygmalion was a Cypriot sculptor who carved a woman out of ivory ... his statue was so beautiful and realistic that he fell in love with it. 
In time, Aphrodite's festival day came, and Pygmalion made offerings at the altar of Aphrodite ... he quietly wished for a bride who would be "the living likeness of my ivory girl." When he returned home, he kissed his ivory statue, and found that its lips felt warm. He kissed it again, and found that the ivory had lost its hardness. Aphrodite had granted Pygmalion's wish. 
Pygmalion married the ivory sculpture changed to a woman under Aphrodite's blessing. In Ovid's narrative, they had a daughter, Paphos, from whom the city's name is derived.
Ovid's Pygmalion has inspired many works of literature and has been the subject of several notable paintings and sculptures. For some reason, the popularity of the Pygmalion myth soared in the 19th century. Two famous works of art related to Pygmalion are:


Étienne Maurice FalconetPygmalion et Galatée (1763)


Pygmalion and Galatea by Auguste Rodin
modelled 1889, carved ca. 1908–9

George Bernard Shaw's play Pygmalion is of course well known and this play spawned two successful film version: the eponymous 1938 film and 1964's My Fair Lady.

Wednesday 4 April 2018

A Font Affair

I've long been scrutinising my diurnal age and tweeting my findings. Lately organising information about my daily number in Airtable. Occasionally I've presented my number using an ornate font, such as a made available at sites like fontspace.com. Typically, I'll display the number as large as possible (often 200 point size) and then take a screenshot of it. I'm now considering doing this on a more regular basis and experimenting with a wider variety of fonts. It's a way of adding an extra dimension of interest to the number, rather than focusing purely on its mathematical properties. At the same time, my artistic side gains some stimulation.

Here is what I created today using the KBZipaDeeDooDah font and the Autodesk Pixlr application on my Mac.
This is very simple of course. I just selected a sticker from one of those available in the antique category, pasting and then positioning it as shown. The black and white tone of the original number is preserved and the fob watch reinforces the diurnal significance. I've posted this particular image to Instagram replicating it so that it appears three times in a 1:1 ration image (using an option available under Instagram's Layout App).

ADDENDUM: I've since started an Instagram username of Numbered_Daze where I post my diurnal age daily, using a different font each time. This was today's post (12th September 2018) and the font used is called Gears:


Saturday 17 March 2018

AIRTABLE

I've begun experimenting with a new app called Airtable that promises good things. Here is a August 2017 review from PC News.
Airtable is a relational database tool that doubles as an online collaboration service. Before you brush it off as boring because of the word "database," take a good look at Airtable. It's highly visual and it facilitates meaningful conversation, too. Businesses might use it to manage CRM, and individuals might use it to create inventories of collections they own. Airtable is different from older database management systems because it looks like an app that anyone with an iPhone could use. And because you use Airtable to look at information differently, as you do with kanban boards, it makes the tool suitable for new, collaborative uses. Airtable is the least intimidating database management system I've seen, and it comes with an excellent array of templates to help you understand how other people use it, too. It's the database management app for teams that don't ever want to use the word "database." It still has room to grow, but Airtable is already a great service for teams who need it.
You can use it from within a browser or download an app to your computer or mobile device. The functionality seems the same in either case. I've started using it a way of coordinating the data associated with my tracking the number of days I've been alive and examining the mathematical significance of the number using both WolframAlpha and the Online Encyclopaedia of Integer Sequences (OEIS). I keep track of the days using the calendar on my laptop, examine the number and then tweet about what I've found. The tweet generally contains a link to the relevant OEIS entry as well as screenshots from OEIS or WolframAlpha (sometimes both). If the entry is particularly interesting I might post something to my Mathematics blog.

The advantage of Airtable is that I can set up a table, create a date field and use this as a calendar. I can then add various other fields including:


  • a key field called number e.g. 25185 (which is my number for today)
  • a multiple select field enabling me to choose from prime, two factors, three factors or four or more factors
  • a name field showing the factors if the number is composite or just the number itself if it's prime
  • a link field containing the URL of the associated tweet on Twitter
  • a link field containing the URL of the associated OEIS entry
  • a link field containing any other relevant URL
  • a long text field in which information about the number can be included
  • an attachment field
A screenshot is included below shows the grid view (but the calendar view just looks like a regular calendar):


The free version allows up to 1200 records per database with an unlimited number of databases. That's over three years of daily entries, following which I can simply duplicate the database, clear it of records and start afresh. What the free plan offers at the moment is shown in the attached graphic. There is a limit of 2GB of attachments per database.

So far I'm quite happy with the interface and its ease of use. One can only hope that the company doesn't change its base tier like Evernote did. It's certainly about time that relational databases were made a little more user friendly. The company has just introduced a new feature called Blocks but this isn't available to free users like myself.

Of course, I've only just started entering records but in time I'll be able to quickly search find all primes because that's a choice in my multiple select field. Similarly, I'll be able to find all semiprimes because that's another choice in my multiple select field. Additionally, I can search by date and by number. Given that the factors are listed in the factor field, I can also search by factor e.g. what are all the numbers with 23 as a factor. All this will make analysis of the data much easier. I'm sure I'll add other fields and modify the database in various ways as time goes by but I feel I'm off to an encouraging start.

UPDATE: as of 22nd March 2018, I'm still very pleased with this app. Today I added a 152 KB PDF file an attachment to my daily record. After all, I supposedly have 2Gb of storage space per base and even uploading an attachment of that size, I would only use up 54 MB of data.

Saturday 10 March 2018

CHESS: FISCHER versus TAL

It was Bobby Fischer's birthday yesterday. He was born March 9th 1943 and would have been 75 now had he lived. However, he died in 2005 but Chess Base featured a wild game that he played with Tal back in 1960 in Leipzig. Black adopted the French Defence, Winawer Variation, and the game went like this (Fischer is White: there's still a glitch in the display below, the names show up in the preview but not in the final display):
[White "Fischer, Robert James"] [Black "Tal, Mikhail"] [Event "Leipzig ol (Men) fin-A"] [Site "Leipzig"] [Date "1960.??.??"] [Round "5"] [Result "1/2-1/2"] [WhiteElo "0"] [BlackElo "0"] [ECO "C18"] 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Ba5 6. b4 cxd4 7. Qg4 Ne7 8. bxa5 dxc3 9. Qxg7 Rg8 10. Qxh7 Nbc6 11. Nf3 Qc7 12. Bb5 Bd7 13. O-O O-O-O 14. Bg5 Nxe5 15. Nxe5 Bxb5 16. Nxf7 Bxf1 17. Nxd8 Rxg5 18. Nxe6 Rxg2+ 19. Kh1 Qe5 20. Rxf1 Qxe6 21. Kxg2 Qg4+ 1/2-1/2
Tal draws of course by perpetual check, his only recourse because of his material disadvantage but it is certainly a short and sharp game, very much in Tal's style. I retrieved the game from chess.com. According to that site's database, they played a total of 13 games, each of them winning four of apiece and drawing the remaining five. All Tal's wins date from 1958 to 1959 when Fischer was still quite young. From 1960 onwards, Tal never defeated Fischer. Tal was not that much older than Fischer at the time, being born in 1936 in Riga, Latvia. The table below summarises their rivalry:


Tal was world champion in 1960 after defeating Mikhail Botvinnik but the latter regained the title the following year. Tal won the strong Bled tournament in 1961, even though he lost his individual game with Fischer.

Getting back to the French Defence however, it's interesting to remember how Alpha Zero, playing White, recently crushed Stockfish when this engine replied 1...e6 against 1.e4. Here is an example of one such game:


As regards the Winawer Variation of the French Defence, it does tend to produce sharp games such as the one between Fischer and Tal shown above. After 1.e4 e6 2.d4 d5, the four main variants are:


These statistics are taken from 365chess.com. Many other third moves for White are listed but the number of games played using them fall off sharply. For example, the analysis of the fifth most common move 3.Bd3 is based on only 997 games. However, several of these variants yield good results for both White and Black with the number of draws shrinking. Here are the next three most popular moves by White:


Wednesday 7 March 2018

CHESS: THE ELEPHANT GAMBIT

The Elephant Gambit was played against me in one of my blitz games on chess.com. I can't recall how I fared but I remember being surprised and it's certainly a good choice by Black when playing blitz chess. The essential position is shown below:


Here is an interesting video of a game involving this gambit that was played in the middle of the nineteenth century:


There is an interesting collection of games involving the elephant gambit on chessgames.com, all involving wins for Black. Here is the most recent game shown on that site:
[Event "Russian Team Championships"] [Site "Sochi RUS"] [Date "2012.04.10"] [EventDate "2012.04.09"] [Round "2"] [Result "0-1"] [White "Alexej Gorbatov"] [Black "Pavel Skatchkov"] [ECO "C40"] [WhiteElo "2363"] [BlackElo "2486"] [PlyCount "110"] 1. e4 e5 2. Nf3 d5 3. d4 dxe4 4. Nxe5 Bd6 5. Bf4 Nf6 6. Bc4 O-O 7. Nc3 Nc6 8. Nxc6 bxc6 9. Bg5 Bf5 10. O-O h6 11. Bh4 Re8 12. Re1 Rb8 13. a3 Bf4 14. b3 e3 15. f3 Qd6 16. g3 e2 17. Nxe2 Be3+ 18. Kg2 g5 19. g4 Nxg4 20. Bg3 Nf2 21. Bxf2 Bxf2 22. Rf1 Be3 23. Ng3 Bg6 24. c3 c5 25. dxc5 Qxc5 26. Qd5 Rbd8 27. Qxc5 Rd2+ 28. Kh3 Bxc5 29. b4 Bd6 30. Ra2 Rxa2 31. Bxa2 Re3 32. Kg4 Rxc3 33. Bb1 Rxa3 34. Bxg6 fxg6 35. Ne4 Bf4 36. Kh3 Rb3 37. Rf2 Rxb4 38. Nf6+ Kf7 39. Nd5 Rd4 40. Nxf4 Rxf4 41. Kg3 Rb4 42. Rc2 Rb7 43. Rc6 a5 44. Ra6 c5 45. Rxa5 Rc7 46. Kf2 c4 47. Ke2 c3 48. Kd1 c2+ 49. Kc1 Rc3 50. Ra2 h5 51. Rxc2 Rxf3 52. Kd1 Re3 53. Rf2+ Kg7 54. Kd2 Ra3 55. Kc1 g4 0-1
Certainly an interesting game as well. 365chess.com has a useful analysis of the main variants of this opening:


As the chart shows, 3.exd5 or 3.Nxe5 offer the best chances for White and by clicking on the possibilities in the left-hand column, the common moves in these sub-variants can be explored. For example, 3.exd5 leads to these main variations:


Clearly, Black must proceed with either 3...e4 or 3...Bd6 or else the future looks grim. I like the layout of the 365chess.com website, it's very easy to navigate.

Sunday 4 March 2018

CHESS: The Fried Liver Attack

Playing 5-minute chess on the Internet, I got caught by the so-called Fried Liver Attack described by Wikipedia as follows:
The Fried Liver Attack, also called the Fegatello Attack (named after an Italian idiom meaning "dead as a piece of liver"), is a chess opening. This opening is a variation of the Two Knights Defence in which White sacrifices a knight for an attack on Black's king. The opening begins with the moves: 
1. e4 e5
2. Nf3 Nc6
3. Bc4 Nf6
4. Ng5 d5
5. exd5 Nxd5?!
 
 
This is the Two Knights Defense where White has chosen the offensive line 4.Ng5, but Black's last move is risky (other Black choices include 5...Na5, 5...b5, and 5...Nd4). White can now get an advantage with 6.d4 (the Lolli Attack). However, The Fried Liver Attack involves a knight sacrifice on f7, defined by the moves: 
6. Nxf7 Kxf7 
The Fried Liver Attack has been known for many centuries, the earliest known example being a game played by Giulio Cesare Polerio before 1606.
Play usually continues 7.Qf3+ Ke6 8.Nc3 (see diagram).
 
Black will play 8...Nb4 or 8...Ne7 and follow up with ...c6, bolstering his pinned knight on d5. If Black plays 8...Nb4, White can force the b4 knight to abandon protection of the d5 knight with 9.a3?! Nxc2+ 10.Kd1 Nxa1 11.Nxd5, sacrificing a rook, but current analysis suggests that the alternatives 9.Qe4, 9.Bb3 and 9.O-O are stronger. 
White has a strong attack, but it has not been proven yet to be decisive.
Because defence is harder to play than attack in this variation when given short time limits, the Fried Liver is dangerous for Black in over-the-board play, if using a short time control. It is also especially effective against weaker players who may not be able to find the correct defences. 
In these 5-minute online games, I should decide how to respond to 1.e4 before starting or else I'll continue to get caught off-guard by these aggressive openings. Meanwhile, I'll continue to sharpen my chess skills via online play. I'm gathering experience as I go, summed up thus far by a series of bullet points in answer to the question what have I learned from Blitz chess:

What have I learned about Blitz Chess?
  • it’s brutal
  • it’s all about time … if it runs out, you’re dead
  • there’s no time for equivocation … if in doubt, make an innocuous move or repeat a move
  • avoid traditional openings, experienced players will have traps ready
  • always look at the immediate threat from your opponent’s move and respond to it
  • better still, threaten something yourself to which your opponent must respond
  • keep playing right to the end, a draw or even a win can be snatched from the jaws of defeat
  • don’t play when you’re not mentally sharp or in any way distracted (100% focus is needed).

Wednesday 28 February 2018

The Internet Archive and WikiArt

I'm currently reading Marianne Faithfull's memories, dreams and reflections after accidentally stumbling across it on The Internet Archive while looking for the similarly named book by Carl Jung. I was able to borrow it through the Open Library for a two week period. Her autobiography titled Faithfull is also available there. Earlier I had been looking for James Bacque's Other Losses and not only found it on the Archive but was able to download an unencrypted copy rather than having to borrow it. I also discovered that a great many old 78 records have been digitised and placed on The Great 78 Project, also a part of the archive. So there's certainly a lot to discover.


Anyway, Marianne Faithfull's book is proving an interesting read. I know some of the characters who she interacted with: Allen Ginsberg, William Burroughs and many of her friends in the music business. Others however, I knew little or nothing about such as Caroline Blackwood and Lucian Freud. Here is a quote from the Wikipedia article about her:
Lady Caroline Maureen Hamilton-Temple-Blackwood (16 July 1931 – 14 February 1996) was a writer, and the eldest child of the 4th Marquess of Dufferin and Ava and the brewery heiress Maureen Guinness. A well-known figure in the literary world through her journalism and her novels, Caroline Blackwood was equally well known for her high-profile marriages, first to the artist Lucian Freud, then to the composer Israel Citkowitz and finally to the poet Robert Lowell, who described her as "a mermaid who dines upon the bones of her winded lovers". Her novels are known for their wit and intelligence, and one in particular is scathingly autobiographical in describing her unhappy childhood.
Lucian Freud, Girl in Bed, 1952

Regarding the above photo: Robert Lowell (in 1977) fled London to return to his former wife Elizabeth Hardwick. He died from a heart attack in the backseat of a taxi, clutching Girl in Bed, Lucian Freud's haunting portrait of Caroline (as related by Marianne Faithfull). A biography has written titled Dangerous Muse: The Life of Lady Caroline Blackwood by Nancy Schoenberger. Of Lucian Freud, the Wikipedia entry begins:
Lucian Michael Freud (8 December 1922 – 20 July 2011) was a British painter and draftsman, specialising in figurative art, and is known as one of the foremost 20th-century portraitists. 
He was born in Berlin, the son of Jewish architect Ernst L. Freud and the grandson of Sigmund Freud. His family moved to Britain in 1933 to escape the rise of Nazism. From 1942-43 he attended Goldsmiths College, London. He enlisted in the Merchant Navy during the Second World War. 
His early career as a painter was influenced by surrealism, but by the early 1950s his often stark and alienated paintings tended towards realism. Freud was an intensely private and guarded man, and his paintings, completed over a 60-year career, are mostly of friends and family. They are generally sombre and thickly impastoed, often set in unsettling interiors and urban landscapes. The works are noted for their psychological penetration and often discomforting examination of the relationship between artist and model. Freud worked from life studies, and was known for asking for extended and punishing sittings from his models.
 Below is a photo of the two of them together:


There are 283 paintings by Lucian Freud on view at https://www.wikiart.org. It is an impressive oeuvre. Here is a self-portrait from the collection:


This excerpt from the Wikipedia article is interesting:
Freud painted from life, and usually spent a great deal of time with each subject, demanding the model's presence even while working on the background of the portrait. A nude completed in 2007 required sixteen months of work, with the model posing all but four evenings during that time; with each session averaging five hours, the painting took approximately 2,400 hours to complete. A rapport with his models was necessary, and while at work, Freud was characterised as "an outstanding raconteur and mimic". Regarding the difficulty in deciding when a painting is completed, Freud said that "he feels he's finished when he gets the impression he's working on somebody else's painting". Paintings were divided into day paintings done in natural light and night paintings done under artificial light, and the sessions, and lighting, were never mixed.
An artist friend of Lucian, Francis Bacon, is mentioned in the https://www.wikiart.org site but unfortunately no artwork is shown due to a copyright infringement notice. However, even though he died in April of 1992, he has a dedicated website where his paintings can be reviewed. I must say I was unimpressed by what I viewed there.

Saturday 24 February 2018

CHESS: An Unlikely Win

Visiting chess.com for the first time and registering, I was tinkering around the site when I accidentally found myself in a 5 minute game against a human. I thought I was playing against a chess engine. I wasn't familiar with the interface and so I was only aware of my opponent's remaining time, which I thought was referring to me. It was only as a time flashed in red at the bottom of my screen that I realised I had only seconds remaining. Luckily and remarkably I managed a checkmate. My opponent still had over two minutes remaining on the clock. It's not a great game and the checkmate could have been easily averted had my opponent blocked with the Knight and not the Bishop. Nonetheless, it boosted my meagre confidence as my rating soared from the default starting value of 1200 to 1362! I'm inclined to take on some more human opponents and see if I can further improve my rating.

The chess.com website stores your games and allows for the game to be downloaded as a PGN file. It's remarkable to think how much chess has changed since I played correspondence chess by mail in the late 60's and early 70's. I used to receive a chess magazine in the mail and that was my sole source of information about what was happening in the world of chess. Now there is live streaming of every major tournament and there are hundreds of chess sites to choose from. Here is the game:
hite "michaelgould321"] [Black "voodooguru23"] [Result "0-1"] [ECO "C50"] [WhiteElo "1038"] [BlackElo "1362"] [TimeControl "300"] [EndTime "4:26:10 PST"] [Termination "voodooguru23 won by checkmate"] [CurrentPosition "r4r2/pp3ppk/2p3b1/n3p3/4P2P/q2P4/2PNQP2/1BKR3R w - - 0 22"] 1.e4 {[%clk 0:04:58]} e5 {[%clk 0:04:57]} 2.Nf3 {[%clk 0:04:56]} Nc6 {[%clk 0:04:54]} 3.Bc4 {[%clk 0:04:49]} d6 {[%clk 0:04:45]} 4.d3 {[%clk 0:04:39]} Nf6 {[%clk 0:04:37]} 5.a3 {[%clk 0:04:38]} Be7 {[%clk 0:04:31]} 6.Be3 {[%clk 0:04:36]} O-O {[%clk 0:04:28]} 7.Nbd2 {[%clk 0:04:33]} Bg4 {[%clk 0:04:14]} 8.h3 {[%clk 0:04:30]} Bh5 {[%clk 0:04:10]} 9.g4 {[%clk 0:04:25]} Bg6 {[%clk 0:04:07]} 10.Qe2 {[%clk 0:04:22]} h6 {[%clk 0:04:00]} 11.O-O-O {[%clk 0:04:21]} Na5 {[%clk 0:03:34]} 12.Ba2 {[%clk 0:04:14]} c6 {[%clk 0:03:20]} 13.Rhg1 {[%clk 0:04:10]} d5 {[%clk 0:03:00]} 14.g5 {[%clk 0:04:04]} hxg5 {[%clk 0:02:50]} 15.Nxg5 {[%clk 0:04:00]} Nh7 {[%clk 0:02:08]} 16.Nxh7 {[%clk 0:03:50]} Kxh7 {[%clk 0:01:55]} 17.Rh1 {[%clk 0:03:36]} d4 {[%clk 0:01:34]} 18.Bxd4 {[%clk 0:03:16]} Qxd4 {[%clk 0:00:44]} 19.h4 {[%clk 0:03:06]} Bxa3 {[%clk 0:00:13]} 20.bxa3 {[%clk 0:02:56]} Qa1+ {[%clk 0:00:08]} 21.Bb1 {[%clk 0:02:54]} Qxa3# {[%clk 0:00:05]} 0-1

Thursday 22 February 2018

CHESS: THE MARSHALL ATTACK

An article on ChessBase alerted me to a recent twitter post by Julian Assange containing a screenshot of a chess position. Here is the diagram:


It didn't take someone long to identify the provenance of this position. It's from a 1918 game between Jose Raul Capablanca and Frank Marshall and shows the position at the end of the 24th move. The full game is displayed at the bottom of this post (for some reason the names are not being displayed: Capablanca is White). I located the game at chessgames.com, a site that with an impressive database of games that is freely accessible and downloadable. I've registered on this site and look forward to accessing more games. There is a premium membership option but I'll be exploring the free options.

Here is an excerpt about the so-called Marshall Attack that was employed in this game, taken from Wikipedia from the Wikipedia article about the Ruy Lopez.
One of Black's more aggressive alternatives is the Marshall Attack: after 3...a6 4.Ba4 Nf6 5.0-0 Be7 6.Re1 b5 7.Bb3 0-0 8.c3 Black plays the gambit 8...d5, sacrificing a pawn. The main line begins with 9.exd5 Nxd5 (9...e4?!, the Herman Steiner variation, is considered weaker) 10.Nxe5 Nxe5 11.Rxe5 c6 (Marshall's original moves, 11...Nf6, and 11...Bb7 are considered inferior, but have also yielded good results at top levels of play for Black. GM Joel Benjamin suggests that 11...Bb7 is inferior due to 12.Qf3).   
To the casual observer it might seem that Black has been careless and lost a pawn; however the sacrifice has also stripped White's kingside of its defenders, given Black a lead in development, and rendered White's 8.c3 irrelevant. Since Black's compensation is based on positional rather than tactical considerations, it is difficult or perhaps impossible to find a refutation. Black generally goes all-in with a massive kingside attack, which has been analysed to great depth (sometimes beyond move 30) with no definite conclusion as to the Marshall's soundness. The Marshall Attack is a very sharp opening system in which a great amount of theoretical knowledge is vital, and many White players, including Garry Kasparov, avoid it by playing one of the anti-Marshall systems, 8.d4, 8.a4 or 8.h3 instead of 8.c3. 
This gambit became famous when Frank James Marshall used it as a prepared variation against José Raúl Capablanca in 1918; nevertheless Capablanca found a way through the complications and won. It is often said that Marshall had kept this gambit a secret for use against Capablanca since his defeat in their 1909 match. The most common counterclaim is that Marshall had used a similar approach in 1917 against Walter Frere. However Edward Winter found no clear evidence of the date for Frere vs Marshall; several games between 1910 and 1918 where Marshall passed up opportunities to use the Marshall Attack against Capablanca; and an 1893 game that used the same line as in Frere vs Marshall. 
Improvements to Black's play were found (Marshall played 11...Nf6!? originally, but later discovered 11...c6!) and the Marshall Attack was adopted by top players including Boris Spassky, John Nunn and more recently Michael Adams. In the Classical World Chess Championship 2004, challenger Peter Leko used the Marshall to win an important game against World Champion Vladimir Kramnik. Currently, Armenian Grandmaster Levon Aronian is one of the main advocates for the Marshall Attack.
[Event "New York"] [Site "New York, NY USA"] [Date "1918.10.23"] [EventDate "1918.10.23"] [Round "1"] [Result "1-0"] [White "Jose Raul Capablanca"] [Black "Frank James Marshall"] [ECO "C89"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "71"] 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 Nf6 12.Re1 Bd6 13.h3 Ng4 14.Qf3 Qh4 15.d4 Nxf2 16.Re2 Bg4 17.hxg4 Bh2+ 18.Kf1 Bg3 19.Rxf2 Qh1+ 20.Ke2 Bxf2 21.Bd2 Bh4 22.Qh3 Rae8+ 23.Kd3 Qf1+ 24.Kc2 Bf2 25.Qf3 Qg1 26.Bd5 c5 27.dxc5 Bxc5 28.b4 Bd6 29.a4 a5 30.axb5 axb4 31.Ra6 bxc3 32.Nxc3 Bb4 33.b6 Bxc3 34.Bxc3 h6 35.b7 Re3 36.Bxf7+ 1-0

Thursday 1 February 2018

Musical Progress

2018 is shaping up to be a year where I make some decisive improvement in my grasp of musical theory and proficiency in playing the guitar. I've began with the minor pentatonic scale which the beginning point for everybody and have been practising consistently. I've found Pinterest to be quite useful in providing musical diagrams as shown below:


I've since moved on to the minor blues scale which is just the minor pentatonic with an extra note added, as shown below:


Taking the G minor pentatonic scale as an example (that's the one shown in the first diagram), we have the following five note sequence from one G to the next octave: 

G - Ab - A - Bb - B - C - Db - D - Eb - E - F - F# - G

For the G minor blues scale (shown above), we have the following six note sequence from one G to the next (a C# is added):

G - Ab - A - Bb - B - C - Db - D - Eb - E - F - F# G

The ratio of one note's frequency to the next note's frequency is constant which leads to some interesting mathematics. I won't deal with that here because I realised I haven't put the necessary code into this blog's template, instead I discuss it in my mathematical blog.

The notes of the pentatonic scale can be remembered in a variety of ways and one way is to draw on the circle of fifths for help. The circle of fifths is represented as follows:


Let's look at the Gm on the inner rim of the circle. All of the notes of the minor pentatonic scale for G can be found by starting here and moving outward to the next note Bb then across to C, back to inside Dm and out to F. This gives G, Bb, C, D, F. Let's try with the scale for Am. Using the same route we get A, C, D, E, G. Again with Em, we get E, G, A, B, D.

Sunday 14 January 2018

Twitter Fail

I knew that Twitter was planning to increase the character limit for tweets from 140 to 280 but I thought it was yet to be rolled out to the majority of users. It came as some surprise to learn that it had been rolled out in early November of 2017. I regularly use the Twitter app on OS X for tweeting from my three Twitter accounts and had not noticed any change.


This is Twitter version 4.3.2 and so I naturally thought I'd forgotten to update. A check at the App store however, revealed that I had the latest version but it hadn't been updated since March 2017. What a joke! Anyway, I've now deleted the app and will open three separate browsers for my three separate accounts: Chrome for @SeanReeves, Safari for @BabaParvardigar and Firefox for @voodooguru1949. I could use Tweetdeck to handle the multiple accounts but I noticed that it hasn't been updated in quite a while so I'm not going to take the risk. I'll stick to browsers as much as possible now and eschew OS X apps.

UPDATE: I did finally download Tweetdeck in February of 2018 and have registered all three accounts. It seems to be working fine at the moment.