[blind-chess] Solution to Problem WAC019
- From: "R Dinger" <rrdinger@xxxxxxxxxx>
- To: "chess" <blind-chess@xxxxxxxxxxxxx>
- Date: Sat, 7 Aug 2010 07:25:27 -0700
Good Morning Puzzlers,
The best move is: 1. c6
Principle:
First, White creates a double attack:
1. c6 attacking Queen and Knight.
1... Qxb5 Black takes the Queen as everything else is worse.
2. Nxb5 trades Queens and threatens the Bishop and White has won a piece next
move.
Rod sent a full Fritz analysis of 21 possible Black continuations, which follow:
Continuations after 1.c6
Analysis by Fritz 12:
1. +/- (1.23): 1...Qxb5 2.Nxb5 Bb6 3.cxd7 Bxd7 4.Nc3 Rac8 5.Na4 Bxa4 6.Rxa4
Rc2 7.g3 Rd8 8.Kg2 f6 9.Be3 g5
2. +- (2.25): 1...Qd5 2.Qxd5 exd5 3.Nb5 Bb6 4.cxd7 Bxd7 5.Nd6 Bg4 6.Nxb7 Bxf3
7.gxf3 Bxd4 8.Ra5 Rab8 9.Nd6 Be5 10.Rxd5
3. +- (2.29): 1...Nf6 2.cxb7 Qxb5 3.Nxb5 Bxh2+ 4.Kxh2 Bxb7 5.Ne5 Rfd8 6.Be3
Nd5 7.Nxa7 f6 8.Nc4 Nc3 9.Nb6 Rab8
4. +- (2.68): 1...Bxh2+ 2.Nxh2 Qxb5 3.Nxb5 bxc6 4.Nc7 Rb8 5.Ba3 c5 6.dxc5 Ne5
7.c6 Nxc6 8.Bxf8 Kxf8 9.Rfc1 Bd7 10.Rd1
5. +- (2.99): 1...Nc5 2.dxc5 Qd5 3.Nc4 a6 4.Qb4 Qxc6 5.Rd1 f6 6.Be3 Rd8
7.Rxd8+ Bxd8 8.Nd6 Bc7
6. +- (3.25): 1...Ne5 2.dxe5 bxc6 3.Qxc6 Bxe5 4.Nxe5 Qxe5 5.Be3 Rb8 6.Nc4 Qd5
7.Qxd5 exd5 8.Bxa7 Rb4 9.Nd6
7. +- (5.44): 1...Qf5 2.cxd7 Qxb5 3.Nxb5 Bxh2+ 4.Kxh2 Bxd7 5.Nc7 Rac8 6.Bf4 a6
7.Rfc1 Bc6 8.d5 Bxd5 9.Nxd5
8. +- (5.90): 1...g6 2.cxd7 Bxh2+ 3.Nxh2 Qxb5 4.Nxb5 Bxd7 5.Nd6 Bc6 6.Ng4 h5
7.Ne5 a5 8.Bh6 Rfd8
9. +- (6.28): 1...Be5 2.cxb7 Bxb7 3.Qxb7 Nc5 4.Qb5 Bf6 5.Rb1 Rfc8 6.dxc5 Qxc5
7.Qa4 Qc6 8.Qf4 Qc7
10. +- (6.67): 1...g5 2.cxd7 a6 3.dxc8Q Rfxc8 4.Qxg5+ Qxg5 5.Bxg5 b5 6.Be7 Re8
7.Bb4 Reb8 8.Rfc1 Bf4 9.Rc5
11. +- (6.77): 1...Qg4 2.cxd7 Qe4 3.Rb1 b6 4.dxc8B Rfxc8 5.Re1 Qb7 6.Qd3 a6
7.Ng5 g6 8.Ne4 b5 9.Bg5
12. +- (6.77): 1...Qg6 2.cxd7 Qe4 3.Rb1 b6 4.dxc8B Rfxc8 5.Re1 Qb7 6.Qd3 a6
7.Ng5 g6 8.Ne4 b5 9.Bg5
13. +- (6.94): 1...e5 2.cxd7 Bxd7 3.Qxd7 e4 4.Qxc7 exf3 5.Qxb7 fxg2 6.Re1 Rab8
7.Qxg2 Rb6 8.Bf4 Qf5
14. +- (7.20): 1...Qxf3 2.gxf3 Nb6 3.Nc4 a6 4.Qb3 bxc6 5.Ba3 Nxc4 6.Qxc4 Rd8
7.Qxc6 Ra7 8.Bc5
15. +- (7.65): 1...f5 2.cxd7 Bxd7 3.Qxd7 Qf7 4.Qxf7+ Rxf7 5.Nb5 a6 6.Ng5 Rd7
7.Nxc7 Rxc7 8.Nxe6 Rd7 9.Bf4 a5 10.Rfd1
16. +- (10.59): 1...bxc6 2.Qxh5 Ba6 3.Re1 h6 4.Bd2 Nf6 5.Qc5 Bb6 6.Qc2 Rfc8
7.Qa4 Bb7 8.Nc4
17. +- (10.79): 1...a5 2.Qxh5 bxc6 3.Bd2 Nf6 4.Qh4 Nd5 5.Ne5 a4 6.Rfc1 Bb7
7.Nxc6 Bxc6 8.Rxc6 Rfc8
18. +- (11.02): 1...Nb6 2.Qxh5 bxc6 3.Bd2 f6 4.Qc5 Bd7 5.Nc4 Nxc4 6.Qxc4 Rfb8
7.Rfb1 Rxb1+ 8.Rxb1 Bd6
19. +- (11.02): 1...Qxh2+ 2.Nxh2 Nb6 3.Ng4 f5 4.Ne5 Bxe5 5.Qxe5 bxc6 6.Rb1 Re8
7.Re1 Rd8 8.Bf4
20. +- (11.58): 1...f6 2.Qxh5 bxc6 3.Nc4 Rf7 4.Bd2 Nb6 5.Qc5 Bd7 6.Rfb1 Rff8
7.g4 Rfb8
21. +- (11.68): 1...h6 2.Qxh5 bxc6 3.Nc4 Nf6 4.Qc5 a5 5.Qxc6 Ra7 6.Bd2 Bd7
7.Qc5 Rfa8 8.Rfe1
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