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[Event "Live Chess"]
[Site "Chess.com"]
[Date "2015.01.22"]
[Round "?"]
[White "korner"]
[Black "MahadevShiv"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "1501"]
[BlackElo "1421"]
[Annotator "Tomalty,Alan"]
[PlyCount "33"]
[EventDate "2015.??.??"]
[TimeControl "10"]
1. d4 d5 2. c4 c6 3. Nf3 e6 4. Bg5 Be7 5. Bxe7 Nxe7 6. e3 O-O 7. Nc3 a6 8. Bd3
dxc4 9. Bxc4 b5 10. Bd3 Bb7 {Diagram [#]} (The Greco sac even works here w/o a
pawn on e5.) 11. e4 ( I missed the sac here but played it 4 moves later when I had an additional attacking asset of a pawn on e5.) (11. Bxh7!!+ $3 Kxh7 12. Ng5+ Kh6 (12... Kg6 13. Qg4 f5 14.
Qg3 Qe8 (14... Qb6 15. h4) (14... Qa5 15. O-O) (14... Qc8 15. e4) (14... Qd7
15. Nxe6+) (14... Qd6 15. Qxd6) 15. Nxe6+ (15. e4 $3 fxe4 16. Nxe6+ Kf7 17.
Nxf8 Kxf8 18. Nxe4 $18 {Diagram [#]}) (15. O-O $16 {Diagram [#]}) 15... Kf7)
13. Qg4 c5 (13... f5 14. Qh4+ Kg6 15. e4 $18 {Diagram [#]} fxe4 16. Qh7+ Kxg5
17. Nxe4+ Kf4 18. Qh4+ Kf5 19. Ng3+ Kg6 20. Qh5+ Kf6 21. Ne4#) 14. Qh4+ Kg6 15.
Qh7+ Kxg5 16. Qxg7+ Ng6 17. O-O-O Rg8 18. h4+ Kg4 19. f4 (19. f3+ Kg3 {mate in
8} 20. Qxf7)) 11... Ng6 12. O-O Qb6 13. e5 Nf4 14. Be4 Nd5 15. Bxh7+ Kxh7 16.
Ng5+ Kg8 17. Qh5 1-0
If you have read the book by Jon Edwards "Sacking the Citadel" on the 3500 Greco bishop sacs on h7 and h2, you will realize that the above position does not have any additional positional assets ( besides the white squared bishop. the kingside knight that goes to g5 and the queen) other than the Knight on c3. However even here the only time the sac worked with only the queenside knight on c3 as an additional asset was when the other knight was not blocking the Queen from passing through f3. Vukovic postulated that white needs at least 2 additional assets (See Edwards work for a list of these) for the sac to work. On page 392 all the included games are indexed by Number of additional Assets classification. In checking the index for any game with 1 additional asset, I didn't find any that were sound in the knight on c3 listed as 1 additional asset classification and there were no sound sacs in the Zero additional asset classification . Therefore the above example is certainly unique in the history of chess. Houdini seems to agree that the sac is sound. The game I played actually had a 7 second increment. Does anyone know how to represent increments in the TimeConrol box of the pgn game header ?
[Site "Chess.com"]
[Date "2015.01.22"]
[Round "?"]
[White "korner"]
[Black "MahadevShiv"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "1501"]
[BlackElo "1421"]
[Annotator "Tomalty,Alan"]
[PlyCount "33"]
[EventDate "2015.??.??"]
[TimeControl "10"]
1. d4 d5 2. c4 c6 3. Nf3 e6 4. Bg5 Be7 5. Bxe7 Nxe7 6. e3 O-O 7. Nc3 a6 8. Bd3
dxc4 9. Bxc4 b5 10. Bd3 Bb7 {Diagram [#]} (The Greco sac even works here w/o a
pawn on e5.) 11. e4 ( I missed the sac here but played it 4 moves later when I had an additional attacking asset of a pawn on e5.) (11. Bxh7!!+ $3 Kxh7 12. Ng5+ Kh6 (12... Kg6 13. Qg4 f5 14.
Qg3 Qe8 (14... Qb6 15. h4) (14... Qa5 15. O-O) (14... Qc8 15. e4) (14... Qd7
15. Nxe6+) (14... Qd6 15. Qxd6) 15. Nxe6+ (15. e4 $3 fxe4 16. Nxe6+ Kf7 17.
Nxf8 Kxf8 18. Nxe4 $18 {Diagram [#]}) (15. O-O $16 {Diagram [#]}) 15... Kf7)
13. Qg4 c5 (13... f5 14. Qh4+ Kg6 15. e4 $18 {Diagram [#]} fxe4 16. Qh7+ Kxg5
17. Nxe4+ Kf4 18. Qh4+ Kf5 19. Ng3+ Kg6 20. Qh5+ Kf6 21. Ne4#) 14. Qh4+ Kg6 15.
Qh7+ Kxg5 16. Qxg7+ Ng6 17. O-O-O Rg8 18. h4+ Kg4 19. f4 (19. f3+ Kg3 {mate in
8} 20. Qxf7)) 11... Ng6 12. O-O Qb6 13. e5 Nf4 14. Be4 Nd5 15. Bxh7+ Kxh7 16.
Ng5+ Kg8 17. Qh5 1-0
If you have read the book by Jon Edwards "Sacking the Citadel" on the 3500 Greco bishop sacs on h7 and h2, you will realize that the above position does not have any additional positional assets ( besides the white squared bishop. the kingside knight that goes to g5 and the queen) other than the Knight on c3. However even here the only time the sac worked with only the queenside knight on c3 as an additional asset was when the other knight was not blocking the Queen from passing through f3. Vukovic postulated that white needs at least 2 additional assets (See Edwards work for a list of these) for the sac to work. On page 392 all the included games are indexed by Number of additional Assets classification. In checking the index for any game with 1 additional asset, I didn't find any that were sound in the knight on c3 listed as 1 additional asset classification and there were no sound sacs in the Zero additional asset classification . Therefore the above example is certainly unique in the history of chess. Houdini seems to agree that the sac is sound. The game I played actually had a 7 second increment. Does anyone know how to represent increments in the TimeConrol box of the pgn game header ?
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