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Subject: Re: Difficult position from the Anthology of Chess Combinations

Author: Uri Blass

Date: 01:33:36 11/12/05

Go up one level in this thread

On November 12, 2005 at 01:19:04, J. Wesley Cleveland wrote:

>I found this position in informant39.pdf at The Chess Cafe. Finding the best
>move is not hard, but getting a winning score from the position is very
>dificult.

If 2.09 is a winning score then
Yace after some learning can get winning score

New game,
[D]2rqr1kb/pp1bpp2/3p2pB/3N3n/3NP2P/1B3P2/P1P5/1K1Q2R1 w - - 0 1

Analysis by Yace 0.99.87:

1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 1   00:00:00
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 1   00:00:00
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 2   00:00:00
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 2   00:00:00
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 3   00:00:00
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 3   00:00:00
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 4   00:00:00
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 4   00:00:00
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 5   00:00:00
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 5   00:00:00
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 6/16   00:00:00  17kN
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 6/18   00:00:00  51kN
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 7/18   00:00:00  51kN
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 7/22   00:00:00  207kN
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 8/22   00:00:01  207kN
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 8/25   00:00:01  695kN
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 9/25   00:00:01  695kN
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 9/28   00:00:02  2573kN
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 10/28   00:00:02  2573kN
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 10/31   00:00:05  7100kN
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 11/31   00:00:05  7100kN
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 11/34   00:00:12  17458kN
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 12/34   00:00:13  17458kN
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+ Kg8 7.Rxh8+ Kxh8
  +-  (2.09)   Depth: 12/42   00:00:46  62576kN
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+
  +-  (2.09)   Depth: 13/42   00:01:17  100616kN
1.Rxg6+ Kh7 2.Rg5 Kxh6 3.Qd2 e6 4.Nf5+ exf5 5.Rxf5+ Kh7 6.Rxh5+
  +-  (2.09)   Depth: 13/48   00:02:55  234938kN

(,  12.11.2005)

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "2rqr1kb/pp1bpp2/3p2pB/3N3n/3NP2P/1B3P2/P1P5/1K1Q2R1 w - - 0 1"]
[PlyCount "29"]

1. Rxg6+ Kh7 2. Rg5 Kxh6 (2... Ng7 3. Bxg7 Bxg7 4. f4) 3. Qd2 e6 4. Nf5+ exf5
5. Rxf5+ Kg6 (5... Kg7 6. Rxh5 Re6 7. Qd4+ Rf6 8. Rxh8 Kxh8 9. Nxf6) 6. Rg5+ (
6. Ne7+ Qxe7 7. Bxf7+ Kh7 8. Rxh5+ Kg7 9. Bxe8) 6... Kh6 7. Ne7 Qxe7 8. Bxf7
Kh7 (8... Nf4 9. Qxf4) 9. Rxh5+ Kg7 10. Bxe8 Bxe8 (10... Qxe8 11. Qg5+ Qg6 12.
Qe7+ Kg8 13. Rg5 Qxg5 14. hxg5 Bh3 15. f4) 11. Qh6+ Kf7 12. Qxh8 Bd7 13. Rh7+
Kg6 14. Rxe7 Rxh8 15. Rxd7 *

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Last modified: Thu, 15 Apr 21 08:11:13 -0700

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