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ANNOTATED GAME
Casual Game
Coffey, John vs. Novag Super-Constellation Lv 1
Annotated by: john2001plus (1762)
Chess opening: Benko's opening (A00)
Coffey, John vs. Novag Super-Constellation Lv 1
Annotated by: john2001plus (1762)
Chess opening: Benko's opening (A00)
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1. g3 |
Part of the strength of the 1984 chess computer is its opening book, so I tried to take the machine out of its book. | |||||
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1... c5 2. Nf3 |
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2... d5 3. Bg2 Nc6 4. d4 |
This leads to a reversed Gruenfeld. | |||||
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4... cxd4 5. Nxd4 e5 6. Nxc6 bxc6 7. c4 Bb4+ |
Inaccurate. | |||||
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8. Bd2 |
Also inaccurate. Stockfish 17 thinks that White has a strong advantage after 8. Nc3 Nf6 (8... d4 9. a3 Ba5 10. Bxc6+ Bd7 11. Qa4 Bxc6 (11... dxc3 12. Bxd7+ Qxd7 13. Qxa5 is winning.) 12. Qxc6+ Kf8 13. b4 with a strong advantage.) 9. cxd5 O-O 10. dxc6 Qxd1+ 11. Kxd1 Bxc3 12. bxc3 Bf5 13. Ba3 Rfd8+ 14. Ke1. | |||||
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8... Bxd2+ 9. Qxd2 Nf6 10. Nc3 e4 11. O-O O-O 12. cxd5 cxd5 13. Rfd1 |
Now White is only minuscule better after 13... Be6. | |||||
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13... Bb7 |
Although it is not obvious now, this bishop will come under attack later. | |||||
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14. e3 Rc8 |
White to play. | |||||
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15. Ne2 |
Preparing to centralize the knight on d4. Stockfish 17 gives 15. Qd4 which is stronger because of the attack on the queenside pawn. If 15... a5 16. Qa7 Qc7 17. Rac1 h5 18. Ne2 Qd7 19. Rxc8 Rxc8 20. Qxa5. | |||||
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15... Qe7 |
Stockfish prefers 15... Ba6, making the piece more active. White to play. | |||||
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16. Nd4 |
A little better is 16. Bh3. | |||||
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16... Ng4 |
What is the imbalance in this position? What does the imbalance tell us to play? | |||||
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17. b4 |
Since the center is closed, and there isn't much activity on the open file, the imbalance is White's queenside pawn majority, so White pushes those pawns. Slightly better is 17. Bh3 gaining a slight advantage due to the pin on the knight. Then if 17... f5 18. Nxf5 Rxf5 19. Bxg4 or 17... Ne5 18. Bxc8 or White would be winning after h5 18. Bxg4 hxg4 19. Qe2 f5 20. Rac1 Rcd8 21. b4. | |||||
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17... Rc4 |
The rook could come under fire here. Stockfish gives 17... h5 18. Bf1 h4 19. Be2. | |||||
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18. b5 |
Now after 18... Ne5 19. Qa5 Bc8 20. Rdc1 White has just a slight advantage. | |||||
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18... h6 19. a4 |
Black can still play 19... Ne5 20. a5 a6 21. Rdb1 which barely favors White. | |||||
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19... f5 |
The computer doesn't look far enough ahead to see the coming disaster. White to play. | |||||
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20. a5 |
If 20... Ne5 21. Kh1 Rc7 22. Bf1 Nc4 23. Qc3. | |||||
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20... Rc5 |
White to play. | |||||
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21. Qb4 |
The active queen with the relative pin is good. The computer also likes 21. Rac1, 21. a6, and 21. Bf1. Now if 21... Bc8 22. Nb3 Rc7 23. Qxe7 Rxe7 24. h3 Ne5 25. Rxd5. | |||||
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