Interesting position from one of Graham's books

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Dann Corbit
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Location: Redmond, WA USA

Interesting position from one of Graham's books

Post by Dann Corbit »

This is an exit point from one of Graham's books (based on Playchess games, IIRC):
[d]r1bqnrk1/1p1pbpp1/2p4B/p3p3/3nP3/1BNP1N1P/PPP2P2/R2QK1R1 w Q - bm Nxd4;
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
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MikeGL
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Joined: Thu Sep 01, 2011 2:49 pm

Re: Interesting position from one of Graham's books

Post by MikeGL »

Dann Corbit wrote: ↑Fri Oct 19, 2018 1:10 am This is an exit point from one of Graham's books (based on Playchess games, IIRC):
[d]r1bqnrk1/1p1pbpp1/2p4B/p3p3/3nP3/1BNP1N1P/PPP2P2/R2QK1R1 w Q - bm Nxd4;
Nxd4 followed by Nd5, but line seems difficult and beyond the prowess of my current laptop.
I told my wife that a husband is like a fine wine; he gets better with age. The next day, she locked me in the cellar.
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peter
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Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Interesting position from one of Graham's books

Post by peter »

Hi Jon!
MikeGL wrote: ↑Fri Oct 19, 2018 10:53 am Nxd4 followed by Nd5,
Guess you mean Na4 instead of Nd5.
Made some FW-BW- lines with latest asmFish, ShashChess and H6, two lines played out at 60'+5", 12threads ponder on of 12x3GHz and 2G hash each.

[pgn] [Event "CCC"] [Site "?"] [Date "2018.10.19"] [Round "?"] [White "Corbit, Dann"] [Black "Book, Graham's"] [Result "*"] [Annotator "Martan,Peter"] [SetUp "1"] [FEN "r1bqnrk1/1p1pbpp1/2p4B/p3p3/3nP3/1BNP1N1P/PPP2P2/R2QK1R1 w Q - 0 1"] [PlyCount "50"] 1. Nxd4 (1. Nxe5 $6 Bf6 2. Ng4 (2. Bf4 $5 d5 (2... d6 $2 3. Ng4 Bxg4 4. hxg4 Bg5 5. Be3 Qf6 {0.8/37 aF}) 3. Ng4 b5 4. a3 Bxg4 5. hxg4 Bg5 {-0.1/43 aF}) (2. Nxf7 $5 Rxf7 3. Bxf7+ Kxf7 4. Qh5+ Kg8 5. O-O-O Qe7 6. Rg6 Qe5 7. Qxe5 Bxe5 8. f4 Kf7 9. Rg2 Bc7 10. Bg5 a4 {0.0/37 aF}) 2... d5 3. Be3 Bxg4 (3... Nxb3 $6 4. Nxf6+ Nxf6 5. axb3 d4 6. Bg5 dxc3 7. Qf3 cxb2 8. Rb1 Kh7 9. Qf4 Rh8 10. Qh4+ Kg8 {0.4/33 H6}) 4. hxg4 Nxb3 5. axb3 d4 {0.1/33 H6} 6. g5 dxe3 7. gxf6 exf2+ 8. Kxf2 Qxf6+ 9. Ke2 Nc7 10. Qf1 Qe5 11. Qf5 Qxf5 12. exf5 f6 13. Kd2 Rfd8 14. Ra4 Ne8 15. b4 axb4 16. Rxb4 b5 17. Rbg4 Ra7 18. b3 Nd6 19. Ne4 Nxe4+ 20. Rxe4 Rd5 21. Rf1 Ra2 22. b4 c5 23. Kc3 cxb4+ 24. Kb3 Ra3+ 25. Kxb4 Ra4+ 26. Kc3 Rc5+ 27. Kb2 Rxe4 {½-½ ShashChess Pro 3.0-asmFishWCP_2018-10-18}) (1. Na4 $6 Nxb3 2. axb3 b5 3. Nc3 d6 {0.0/37 aF}) 1... exd4 2. Na4 Kh7 (2... Bf6 $2 3. Qh5 b5 ( 3... d5 4. e5 Qe7 5. Nb6 Ra6 6. Nxc8 {2.7/37 aF}) 4. O-O-O Qe7 5. Nb6 Rb8 6. Nxc8 Rxc8 7. a3 a4 8. Ba2 b4 9. axb4 Ra8 10. Bg5 a3 {2.9/37 aF}) 3. Bc1 d5 4. Qh5+ Kg8 5. Bh6 g6 6. Rxg6+ fxg6 7. Qxg6+ Kh8 8. Bxf8 Bxf8 9. O-O-O Nf6 10. Nb6 Rb8 {0.9/37 aF} 11. exd5 Qe7 12. dxc6 bxc6 13. Nxc8 Rxc8 14. Kb1 Rd8 15. a3 Rd6 16. Qf5 Nd5 17. Rg1 Qf6 18. Qh5+ Bh6 19. Rg4 Qxf2 20. Qe8+ Qf8 21. Qe1 Bg7 22. Rh4+ Kg8 23. Qxa5 Qf5 24. Ka2 Kf8 25. Qa8+ Kf7 {0.6/37 aF, ShashChess Pro 3. 0-asmFishWCP_2018-10-09} * [/pgn]
Peter.
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peter
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Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Interesting position from one of Graham's books

Post by peter »

peter wrote: ↑Fri Oct 19, 2018 11:02 am Hi Jon!
Sorry, Mike!
:(
:)
Peter.
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MikeGL
Posts: 1010
Joined: Thu Sep 01, 2011 2:49 pm

Re: Interesting position from one of Graham's books

Post by MikeGL »

peter wrote: ↑Fri Oct 19, 2018 11:02 am Hi Jon!
MikeGL wrote: ↑Fri Oct 19, 2018 10:53 am Nxd4 followed by Nd5,
Guess you mean Na4 instead of Nd5.
Made some FW-BW- lines with latest asmFish, ShashChess and H6, two lines played out at 60'+5", 12threads ponder on of 12x3GHz and 2G hash each.

[pgn] [Event "CCC"] [Site "?"] [Date "2018.10.19"] [Round "?"] [White "Corbit, Dann"] [Black "Book, Graham's"] [Result "*"] [Annotator "Martan,Peter"] [SetUp "1"] [FEN "r1bqnrk1/1p1pbpp1/2p4B/p3p3/3nP3/1BNP1N1P/PPP2P2/R2QK1R1 w Q - 0 1"] [PlyCount "50"] 1. Nxd4 (1. Nxe5 $6 Bf6 2. Ng4 (2. Bf4 $5 d5 (2... d6 $2 3. Ng4 Bxg4 4. hxg4 Bg5 5. Be3 Qf6 {0.8/37 aF}) 3. Ng4 b5 4. a3 Bxg4 5. hxg4 Bg5 {-0.1/43 aF}) (2. Nxf7 $5 Rxf7 3. Bxf7+ Kxf7 4. Qh5+ Kg8 5. O-O-O Qe7 6. Rg6 Qe5 7. Qxe5 Bxe5 8. f4 Kf7 9. Rg2 Bc7 10. Bg5 a4 {0.0/37 aF}) 2... d5 3. Be3 Bxg4 (3... Nxb3 $6 4. Nxf6+ Nxf6 5. axb3 d4 6. Bg5 dxc3 7. Qf3 cxb2 8. Rb1 Kh7 9. Qf4 Rh8 10. Qh4+ Kg8 {0.4/33 H6}) 4. hxg4 Nxb3 5. axb3 d4 {0.1/33 H6} 6. g5 dxe3 7. gxf6 exf2+ 8. Kxf2 Qxf6+ 9. Ke2 Nc7 10. Qf1 Qe5 11. Qf5 Qxf5 12. exf5 f6 13. Kd2 Rfd8 14. Ra4 Ne8 15. b4 axb4 16. Rxb4 b5 17. Rbg4 Ra7 18. b3 Nd6 19. Ne4 Nxe4+ 20. Rxe4 Rd5 21. Rf1 Ra2 22. b4 c5 23. Kc3 cxb4+ 24. Kb3 Ra3+ 25. Kxb4 Ra4+ 26. Kc3 Rc5+ 27. Kb2 Rxe4 {½-½ ShashChess Pro 3.0-asmFishWCP_2018-10-18}) (1. Na4 $6 Nxb3 2. axb3 b5 3. Nc3 d6 {0.0/37 aF}) 1... exd4 2. Na4 Kh7 (2... Bf6 $2 3. Qh5 b5 ( 3... d5 4. e5 Qe7 5. Nb6 Ra6 6. Nxc8 {2.7/37 aF}) 4. O-O-O Qe7 5. Nb6 Rb8 6. Nxc8 Rxc8 7. a3 a4 8. Ba2 b4 9. axb4 Ra8 10. Bg5 a3 {2.9/37 aF}) 3. Bc1 d5 4. Qh5+ Kg8 5. Bh6 g6 6. Rxg6+ fxg6 7. Qxg6+ Kh8 8. Bxf8 Bxf8 9. O-O-O Nf6 10. Nb6 Rb8 {0.9/37 aF} 11. exd5 Qe7 12. dxc6 bxc6 13. Nxc8 Rxc8 14. Kb1 Rd8 15. a3 Rd6 16. Qf5 Nd5 17. Rg1 Qf6 18. Qh5+ Bh6 19. Rg4 Qxf2 20. Qe8+ Qf8 21. Qe1 Bg7 22. Rh4+ Kg8 23. Qxa5 Qf5 24. Ka2 Kf8 25. Qa8+ Kf7 {0.6/37 aF, ShashChess Pro 3. 0-asmFishWCP_2018-10-09} * [/pgn]

Thanks for the comprehensive variation, Peter.
But the end position doesn't guarantee a win I guess. 3 pawns versus a minor piece still looks drawish.

regards,
mike
I told my wife that a husband is like a fine wine; he gets better with age. The next day, she locked me in the cellar.
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