Arnold Denker (GM 2376) - Spanton (2026)
US Open (Kissimmee, Florida) 1997
Colle System
1.d4 Nf6 2.Nf3 d5 3.e3 e6 4.Bd3 b6 5.0-0 Ba6!?
I had been impressed by this idea after seeing it in a book by Alex Dunne, the correspondence columnist for US magazine Chess Life.
6.Bxa6
Played very quickly by AD.
6...Nxa6 7.c4
Attacking Black's queenside light-square weaknesses.
7...c6!?
Normal is 7...Nb8. The text does not appear in ChessBase's 2021 Mega database, but is quite liked by the analysis engine Stockfish13.
8.Ne5 Qc7 9.Qa4 Nb8 10.Nc3 Bd6 11.f4 0-0 12.Bd2 Ne4 13.Nxe4 dxe4 14.Qc2 f5 15.Bc3 Bxe5 16.fxe5 Nd7 17.Rad1 Rad8
Both sides have mobilised, and now the grandmaster seizes the initiative.
 |
| Position after 17...Rad8 |
*****
*****
*****
*****
18.g4! g6 19.gxf5 gxf5 20.Kh1 Kh8 21.Qf2 Rf7!
A far-from-obvious defensive move that allows the rook to cover three important dark squares: f6, e7 and g7.
22.Rg1 Rg8 23.Rxg8+ Kxg8 24.Rg1+
A logical move and enough for an edge, but probably stronger, as suggested by Stockfish13 and my other main analysis engine, Komodo12.1.1, is 24.d5!?
24...Rg7 25.Rxg7+ Kxg7 26.Qh4 Nf8 27.Qf6+ Kg8
The black position looks vulnerable, but seems to hold in all lines.
28.Kg2 Qf7 29.Qxf7+ Kxf7 30.Bb4 Ng6 31.Kg3 Kg7 32.Bd6 h5 33.h4 Kf7
I offered a draw.
34.a4 a6 35.b3 Ke8 36.Bb4 Kd7 37.Bd6 Kc8 ½–½
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