Saturday, 6 May 2017

017. Numerical Error

White: G. Benson - Koshnitsky Memorial Tournament, 2002

Most correspondence chess nowadays is conducted on online servers. Rather than replying to your opponent in hard or electronic format, as we used to do, you go and make your move on an actual board. The advantages of this method are significant: there is no chance of moves going astray, the time used for “thinking” is clear, and those errors unique to correspondence chess, such as writing your move down wrong, are ruled out. Obviously, human stupidity can never be prevented entirely; input errors are still possible.

The (Gary) Koshnitsky Memorial was played by email, using international numerical notation. In this system the squares on a chessboard are each given a two-digit code according to its file (1-8; replacing the usual algebraic a-h) and rank (1-8 as well), so that the square f3, for instance, is now 63. Making moves involved sending a four-figure number: the first two digits denoting the starting square of the piece or pawn you want to move, the second two digits indicating its destination. Thus 1 e4 would be sent as 5254.

International numerical was standard for international correspondence games, because different countries have different initials for the pieces arising from their different languages: such that a bishop is B in English, but A (alfil) in Spanish, C (слон) in Russian, F (fou) in French, L (läufer) in German, and so on. Using numbers rather than letters eliminates those discrepancies. The slight drawback in human terms is that moves are harder to visualize. 1 Nf3 may be immediately appreciable, but 7163 you have to think about for a moment. In the game below I failed to visualize a move correctly and duly made a numerical error.

The position in the diagram, arising from a Scotch Game, had been seen before. H.Staudler-V.Piccardo, 19th World CC Championship ¾-final 4 1999, continued 21 Ne3 0-0 22 Nxd5 Rxd5 23 f4 Bg5 24 Rc4 Re8 25 Kf2 c5 and was later drawn. My game went a different way: 21 Be2 c5 (aiming to ease my defence by eradicating the queenside pawns) 22 Ne3!? (an unexpected and dangerous sacrifice) 22...cxb4, and now 23 Bb5+ Kf8 24 Kf2 bxa3 25 Rhd1 gives White a strong initiative for the pawn. I hoped to be able to defend, but it didn't look at all easy. And sure enough my opponent played 23 Bb5+, but not as 23 5225. Instead, 23 6125 came back. Checking his earlier emails I discovered that White's 21st move was not 21 Be2 (6152) at all but 21 Kf2 (5162), which means that he basically has an extra tempo for his attack.

Returning to the diagram again: 21 Kf2 c5 22 Ne3 is now not even a sacrifice, and 22...cxb4? (22...0-0 is necessary here) 23 Bb5+ Kf8 24 Rhd1 gave White a big advantage. Subsequent play led to an endgame with rook vs. bishop and knight which I was unable to hold. Fuckadoodledoo.

Fortunately, that was my only loss in the tournament and I finished in joint second place, with a nice win against OTB GM Colin McNab along the way, and received a cheque for a pleasant amount of Australian dollars. I also, as I discovered years later, achieved a CC GM norm in the process. Damn, if I'd realized that at the time I might have tried to get another one. Nevertheless, I can't quite regard this as a missed opportunity, since in my next major tournament I came last.

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