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Mystery game #115: Subtle endgame win, from Black side of Spanish
Mystery game #115: Subtle endgame win, from Black side of Spanish
Here is the text of an interesting game. You can discuss the game, variations, player strengths, era, setting, time controls, etc. I will supply all data in a few days. Enjoy!!
Ismail Ibrahim (1952) -- Frank Dixon (2069), Kingston 1999. Queen's University Chess Club. Played 1999-11-13. Time controls: G/90'. Spanish, Open, C82. Tournament conditions, clocked game, but not part of an actual rated event.
The game follows the Dilworth variation in the Open Spanish, which was first popularized in the 1940s by the English Master Frederick Dilworth. The line is characterized by 11...Nxf2, giving up two minors for a rook and pawn. Very often this type of exchange favours the side with the two pieces, which is White here. But in this instance, the side with the rook -- Black -- seems to be OK, as the line has been played continuously into the current day by GMs. White lags in development, there are many open lines, and Black can work up attacking chances on the kingside if not carefully watched. The line has interested me since I first saw the game Piasetski 0-1 Labelle, Canadian Zonal, Toronto 1972; Black, the lower-rated player, won a sharp game against an IM who was one of the tournament favourites. Israeli GM Victor Mikhalevski is one of the line's most loyal followers; he has played several times in major Canadian events in the 2000s, and used it in the 2004 Canadian Open. Canadian IM Tomas Krnan is the strongest home country player who plays it regularly; NM David Wang is another exponent of it.
Black has an edge on the clock at move 18 with (33,7) minutes elapsed; the game has reached a book position at that juncture. Nunn's Chess Openings, published in 1999, the same year this game was played, provides 20...d4!? as its suggested line, with some highly tactical play soon often arising. I simply decided to guard the d-pawn, with 20...c6, finding this idea at the board, instead of sacrificing it, since it may be difficult for White to find active play, and Black has a preponderance of forces on the kingside, while leading in development, and with no real weaknesses. This idea also frees the B/e6 for active duty. Piece play will be the dominant theme in the middlegame, with the pawns more or less staying where they already are.
With the game looking like it could repeat at move 26, White thinks for a while and decides to offer the exchange of queens with 27.Qd4; Black accepts, even though he will have just three pieces left to White's four. The light-squared bishops also come off at move 30; and Black offers an exchange of rooks with 31...Re1; once again, one would think this favours White. But in many Dilworth endgames, exchanges help Black, since his rook can get active and attack White's queenside pawns. This point is explained well by GM Michal Krasenkow in his book on the Open Spanish. At move 35, the clock times were (67,28) minutes used.
With clock times at (83,39) after move 45, Black gets a passed b-pawn with 46...Ra3! and 48...b4! While White's passed f-pawn also advances, Black has 51...Ra8! to be able to capture the new queen, and his own passer queens without challenge, leaving a simple queen vs. two minors ending, easily converted. Overall, a very instructive game, well played by both sides!
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