More Rummaging

There's more to

Rummaging through 30-year-old chess magazines looking for details on zonals

than the sort of chess history in FIDE's Cradle. There's also art. This cover from the July 1984 issue of Europe Echecs reminded me of the Knights Errant, a group of early chess bloggers who believed that chess was all about tactics, tactics, tactics.

Sancho Panza Counting the Kibitzers, Roland Partos

The artist was the older brother of IM Charles Partos, and was himself a keen chess player. Who are the kibitzers that Sancho Panza is counting? Don Quixote? No, the trees to the right are full of faces.

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Borrowing Leaves

Yes, the holiday week continues and, no, I don't have enough time for blogging. Today I'll borrow a leaf from Felican Kristnaskon!(Merry Christmas!), which borrowed a leaf from Top eBay Chess Items by Price.

While I was working on the Christmas post, I looked at eBay auctions that never make the cut in 'Top Chess Items' and particularly liked the photo shown below. Titled '1957 Vintage MARCEL DUCHAMP LARRY EVANS Chess Photo Art 16x20 ~ PHILIPPE HALSMAN', it sold for nearly US $110, Buy-It-Now.

I don't normally use watermarked photos -- this one is marked 'Finephoto' (the name of the eBay seller) in the lower left -- but the subject, the quality of the photo, and the additional information convinced me to break this rule. The description ('Print Specifications') added,

Photographer: Philippe Halsman (Latvia born American, 1906 - 1979) - internationally renowned portrait and fashion photographer, one of the most important and influential photographers from the 1940's through the 1970's.
Subject: Marcel Duchamp and Larry Evans playing chess.
Date Of Negative: 1957
Type Of Print: Authentic Vintage Sheet Fed Photogravure (from original image - authorized by Philippe Halsman)
Date Of Print: 1972
Original Issue: Bound sheet fed photogravure compilation.
Paper: Medium weight, clay coat - satin/matte finish.
Print Origin: Italy
Approximate Image Size Inches: 8.75 x 10.25 inches
Mount Board Size Inches: 20 x 16 inches
Mount Board Color: White
Print Border: No - full bleed print.
Condition Grade: Extra Fine ++
Verso: Professionally dry mounted with Bienfang archival materials onto sturdy 4ply museum mat board.

One of the most significant photographic artists of the 20th century, Halsman has had numerous exhibitions of his work and his iconic portrait images are held in important collections and museums throughout the world. In 1958 Halsman was listed in Popular Photography magazine's "World's Ten Greatest Photographers" along with Irving Penn, Richard Avedon, Ansel Adams, Henri Cartier-Bresson, Alfred Eisenstaedt, Ernst Haas, Yousuf Karsh, Gjon Mili, and Eugene Smith. In 1975 he received the Life Achievement in Photography Award from the American Society of Magazine photographers.

[More++]

Marcel Duchamp and Larry Evans weren't exactly unknowns either. All of that taken together makes a concise introduction to collecting vintage chess photos.

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Evaluation Anomalies - Engines Behaving Badly

After the previous post, Evaluation Anomaly - Mass Exchange, there are still a number of games to be examined in TCEC Season 8 - Evaluation Anomalies. In this post, I'll take a quick look at two more. (As in the previous posts, see TCEC Archive Modeto play through the complete games using TCEC's helpful game viewer.)

The diagram below shows positions from two games, both with Stockfish playing White and Komodo playing Black. The top row shows two positions from game 44 and the bottom row shows two positions from game 52.

In game 44, after 61.Bf2, reaching the first diagrammed position, Stockfish evaluated the position at wv=0.33 (a third of a Pawn in its favor). Komodo played 61...Rd5, with a value of wv=0.00 (dead equal). Stockfish played 62.g6+ (wv=0.33), to which Komodo replied 62...Ke7 (wv=-0.41), reaching the second position. Note that Komodo's evaluation of the position has dropped suddenly to a negative value (i.e. in Black's favor).

The game continued for another 30 moves with White giving itself an advantage of wv=0.33 and Black giving itself an advantage of around wv=-0.40. At move 90, Black's evaluation quickly dropped to zero (wv=0.00), and ten moves later White's evaluation did the same.

What happened here? It's easy for a human to see that after 62.g6+, the position is completely blocked. Neither player can break through without incurring a serious disadvantage. The game continued for another 50 moves before being declared a draw, with both engines recognizing the inevitable draw 10-20 moves before the 50th move was reached.

Stockfish - Komodo, TCEC Season 8 Superfinal, game 44

Stockfish - Komodo, TCEC Season 8 Superfinal, game 52

In game 52, Stockfish played 43.Raa1 reaching the first position in the bottom row and giving itself an advantage of wv=0.65. Komodo played 43...Qd2, with a similar evaluation of wv=0.62. Both engines consider the position to be nearly two-thirds of a Pawn in White's favor, which should give good winning chances.

The next few moves were 44.Qxd2 (wv=0.81) 44...exd2 (wv=0.03) 45.Red1 (wv=0.81) 45...Re2 (wv=0.00) 46.h3 (wv=0.00) 46...Ra8 (wv=0.00), reaching the second position in the bottom row. The advantage of two-thirds of a Pawn has evaporated and both engines consider the position to be completely equal, although it took White a few additional moves to realize it.

What happened here? In the first diagram, both engines saw that White will win a Pawn -- losing the a-Pawn in exchange for Black's d/e-Pawns. That leaves White a healthy Pawn ahead, right? No, unfortunately for White, the 'healthy' extra Pawn is an advantage of f/g/h-Pawns for White vs. g/h-Pawns for Black. With both Kings placed behind their Pawns, an experienced human player knows that the Rook and Pawn endgame is a draw. It took the engines a few more moves to see that.

In both games discussed here, the engines continued to move their pieces hither and thither for many moves before the draw was declared. Good human players would have agreed a draw as soon as boredom set in.

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Chess Curriculum - Summary

It's been nine months since I first got the idea from Google -- Google Autocompletes CIS(29 March 2015) -- to look at what constitutes a

• Chess Curriculum.

The initial survey included that kickoff post plus the following posts:-

• S.Polgar Chess Curriculum
• FIDE Chess Curriculum
• Chess Curriculum No.6• '(1) from the Kasparov Chess Foundation and (2) from Chess Cafe'

From that I derived:-

• Chess Curriculum Inventory

Then I looked at each curriculum in turn:-

• Short Versions
• Pre-chess
• Judit Polgar's Chess Palaceand Susan Polgar• The sisters are related but their methods aren't.
• FIDE I, FIDE II
• ChessCafe/ChessEDU
• ChessKid/Chess.com I, ChessKid/Chess.com II

If I were a relatively novice player looking for a comprehensive course to teach others, I would follow the ChessKid/Chess.com curriculum. As an experienced player looking for a structured approach where I supply the details, I would follow the Susan Polgar curriculum. The main FIDE curriculum ('Age 7-9') might also fill a niche somewhere. As for the others, I found them limited in their approach. Although I don't plan to take this series any further, I might come back to it from time to time. I realize that I've only scratched the surface.

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Peter Keffler R.I.P.

Peter Keffler, doyen of the Clacton Chess Club, passed away last Tuesday (22 December).   He had celebrated his 92nd birthday only a month earlier.

In his prime, Peter was a 200-grade player (or equivalent) and had several published games and positions.   His most famous win, and one that was celebrated on his 90th birthday cake, was in 1970 when he won with the Black pieces in just 15 moves, playing the Traxler Counterattack (see game below).

John Lambert has written the following: "When I arrived at Clacton Chess in the early nineties, Peter was the leading light.   His knowledge of chess was extensive, as was his generosity in passing on his skills to others.   He had studied at Oxford University and had many games published.   He was quoted in Harding & Barden's 'Openings for the Club Player' for his thoughts on the Two Knights Defence.   If you have a copy, see page 22 (well worth a look).   Peter was influential to me (although starting late I never got near him) as well as juniors at the club in his attacking style of play which made him a match for any player in the Suffolk & Essex leagues.   Peter also played County Chess for Somerset, Essex & Suffolk and was a keen golfer.   He will be missed by many in the Chess world."

The following position has been quoted in several books, and can be found online as a great example of a back row mate:

Peter was Black and two pawns behind.   White has just played R(f1) to d1??.

Peter played 18...Qxd1 and White resigned.   After 19. Nxd1   Nf3+ to be followed by Re1+ and mate to follow.

Peter's attacking style can be seen to good effect in the following correspondence game from 1972 (Peter was White):

Peter's well-stocked bookstall featured at many East Anglian events.   His diligence in carefully packing away every single book in the correct box caused some anxiety for local caretakers, as well as congress organisers who wanted to get home after a tiring weekend!

Peter last played a league game in March 2014.   His deteriorating eyesight and general infirmity meant that he could no longer play serious chess.

Club colleague Melvin Steele has also written a tribute to Peter on the Clacton Chess club website here.

The funeral will take place at Weeley Crematorium at 14.00 on Monday 18 January.

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There will be no more articles until 6 January (off to the West Country).






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Christmas puzzles - Day 4

This is the last of the Christmas puzzles.   If you have answers to all four, email them to me by 3 January.   The best set of answers will win a chess book!

Here is the final puzzle:

It's White to play and mate in 2.





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Christmas puzzles - Day 3

It's Boxing Day, or should that be ChessBoxing Day?

I could have written an article about the new 'sport' of chessboxing, but as I really don't understand its attraction, I shall instead give you a straightforward little puzzle to add to those from the last two days.   It's another Christmas Tree puzzle, with the White Queen sitting proudly at the top of a rather spindly tree:

It's White to play and mate in 2.

Don't put your answer in the comments below, but send all your answers to me tomorrow (after Day 4 puzzle is published) for a chance to win a book prize.





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