Long term exchange sac, is it sound?
29 Aug '12 15:182 editsJust finished this game and wondered what peoples thoughts are regarding the exchange sac? It's really hard to judge whether it was correct or not. Thoughts? 🙂
| EVENT | Siege |
| SITE | http://www.timeforchess.com |
| DATE | 2011.11.06 |
| ROUND | ? |
| WHITE | Marinkatomb |
| BLACK | orangutan |
| RESULT | 1-0 |
| WHITEELO | 1834 |
| BLACKELO | 1868 |
[Event "Siege"]
[Site "http://www.timeforchess.com"]
[Date "2011.11.06"]
[EndDate "2012.08.29"]
[Round "?"]
[White "Marinkatomb"]
[Black "orangutan"]
[WhiteRating "1834"]
[BlackRating "1868"]
[WhiteElo "1834"]
[BlackElo "1868"]
[Result "1-0"]
[GameId "8831450"]
1. Ng1f3 c5 2. c4 Ng8f6 3. Nb1c3 e6 4. g3 b6 5. e4 Bc8b7 6. d3 d6 7. Bf1g2 Bf8e7 8. O-O h6 9. Rf1e1 Nb8d7 10. d4 cxd4 11. Nf3xd4 e5 12. Nd4f5 O-O 13. Nf5xd6 Nd7c5 14. Nd6xb7 Qd8xd1 15. Re1xd1 Nc5xb7 16. Nc3d5 Nf6xd5 17. cxd5 Be7c5 18. a3 Bc5d4 19. Ra1b1 a5 20. Rd1xd4 {The black bishop appears to be a serious thawn in the side for white, the connected passed pawn can be blockaded and it's hard to see how to make progress. Therefore i thought i's free the e-pawn by sacraficing the exchange. The Bishop pair looks strong with two advanced central pawns, Rooks have difficulty defending such positions IMo..} exd4 21. e5 {The Bg2 is going to dominate the center and in some variations the black bishop can make it to d4. I felt the rooks would struggle to defend against the advancing pawns as the bishops are so strong in a pair. It's unclear whether this assesment is sound though.. } Nb7c5 22. b4 Nc5d3 23. f4 axb4 24. axb4 Rf8c8 25. Bc1b2 Nd3xb2 26. Rb1xb2 Ra8a1 27. Kg1f2 Rc8c3 28. d6 {an important tempo, cutting off the retreat of the Ra1 and threatening to Queen } Kg8f8 29. f5 Ra1c1 30. Bg2e4 { I think this pretty much ends the game } Kf8e8 31. e6 f6 32. Rb2a2 Ke8d8 33. Ra2a7 Rc3c7 34. Ra7xc7 Rc1xc7 35. dxc7 Kd8xc7 36. Kf2e2 Kc7d6 37. Be4d5 Kd6c7 38. Ke2d3 b5 39. g4 Kc7d6 40. Kd3xd4 Kd6e7 41. Kd4c5 1-0
[Site "http://www.timeforchess.com"]
[Date "2011.11.06"]
[EndDate "2012.08.29"]
[Round "?"]
[White "Marinkatomb"]
[Black "orangutan"]
[WhiteRating "1834"]
[BlackRating "1868"]
[WhiteElo "1834"]
[BlackElo "1868"]
[Result "1-0"]
[GameId "8831450"]
1. Ng1f3 c5 2. c4 Ng8f6 3. Nb1c3 e6 4. g3 b6 5. e4 Bc8b7 6. d3 d6 7. Bf1g2 Bf8e7 8. O-O h6 9. Rf1e1 Nb8d7 10. d4 cxd4 11. Nf3xd4 e5 12. Nd4f5 O-O 13. Nf5xd6 Nd7c5 14. Nd6xb7 Qd8xd1 15. Re1xd1 Nc5xb7 16. Nc3d5 Nf6xd5 17. cxd5 Be7c5 18. a3 Bc5d4 19. Ra1b1 a5 20. Rd1xd4 {The black bishop appears to be a serious thawn in the side for white, the connected passed pawn can be blockaded and it's hard to see how to make progress. Therefore i thought i's free the e-pawn by sacraficing the exchange. The Bishop pair looks strong with two advanced central pawns, Rooks have difficulty defending such positions IMo..} exd4 21. e5 {The Bg2 is going to dominate the center and in some variations the black bishop can make it to d4. I felt the rooks would struggle to defend against the advancing pawns as the bishops are so strong in a pair. It's unclear whether this assesment is sound though.. } Nb7c5 22. b4 Nc5d3 23. f4 axb4 24. axb4 Rf8c8 25. Bc1b2 Nd3xb2 26. Rb1xb2 Ra8a1 27. Kg1f2 Rc8c3 28. d6 {an important tempo, cutting off the retreat of the Ra1 and threatening to Queen } Kg8f8 29. f5 Ra1c1 30. Bg2e4 { I think this pretty much ends the game } Kf8e8 31. e6 f6 32. Rb2a2 Ke8d8 33. Ra2a7 Rc3c7 34. Ra7xc7 Rc1xc7 35. dxc7 Kd8xc7 36. Kf2e2 Kc7d6 37. Be4d5 Kd6c7 38. Ke2d3 b5 39. g4 Kc7d6 40. Kd3xd4 Kd6e7 41. Kd4c5 1-0
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