Saturday, June 11, 2011

Trapping Pieces - Chess.com

Trapping Pieces - Chess.com

Trapping Pieces

Submitted by WGM Natalia_Pogonina on Chess.com

Winning in chess is not only about reckless attacking and playing for checkmate from move one. Often it is easier to start with gaining a material advantage and then converting it. Today we will be discussing an interesting way in which you can get a serious edge – trapping the opponent’s piece. The consequences of this action are usually one of the following: a) the trapped piece is captured b) the trapped piece remains locked in the cage and is like a prisoner who can’t help his army.

These are the most typical means of trapping pieces:

1) Limiting its mobility using pawns/pieces and attacking it/locking it out of the game.

2) Chasing it to a bad square or corner of the board, where its mobility will be limited.

3) Luring the piece into one’s own camp and cutting off the ways for retreat. Your opponent is urged to play actively, e.g. capture a poisoned pawn, and after that the trap is closed. A classic example is offering a pawn sacrifice (e.g. b2/b7) to trap the queen or seriously hinder its mobility.

Naturally, the hardest piece to trap is the queen, as it is the most mobile piece. However, when there are many pieces on the board, it is sometimes possible to trap it. Here’s a fresh example from the Candidates Matches where Boris Gelfand got his queen cornered by Kamsky:

Rooks are less mobile, and sometimes can be trapped using just a few pieces. This is due to the fact that diagonals are not available to them. Recently I witnessed a nice game at the Russian Club Cup where a rook got cornered:

Bishops’ mobility can be decreased using pawns, as, unlike knights, they can’t jump over such obstacles and, unlike queens and rooks, files and ranks are not available to them. Here is a classic example of a trapped fianchettoed bishop:

White to move

Knights on the rim are grim, so the best way of trapping them is to get them to the edge of the board and lock them out. Myriad endgames have been won in this fashion:

White to move

It is worth remembering that not only misplaced pieces can get trapped, but also active ones. Here’s how it happened in my game vs Ikonomopulu from the recent Women’s European Chess Championship:

Pogonina, N. (2448) vs. Ikonomopoulou, M. (2121)
ch-Euro Indiv Women | Tbilisi GEO | Round 5| 11 May 2011 | ECO: C03 | 1-0
1. e4 e6 2. d4 d5 3. Nd2 Be7 4. e5 c5 5. Ndf3 Nc6 6. c3 Qb6 7. Bd3 cxd4 8. cxd4 Bb4+ ( 8... Nh6 ) ( 8... Nxd4? 9. Nxd4 Qxd4 10. Bb5+ ) 9. Kf1 ( 9. Bd2?! Nxd4 10. Nxd4 Qxd4 11. Qa4+ Bd7 12. Qxb4 Qxd3 13. Qxb7 Rc8 ) 9... Bd7 10. Ne2 Be7 ( 10... f6 11. a3 fxe5 12. dxe5 ( 12. axb4 e4 ) 12... Be7 ( 12... Bc5 13. Nc3 ) 13. b4 ) 11. g3 h5 ( 11... Nb4 12. Bb1 Bb5 13. Kg2 Qa6 14. Nc3 Bd3 15. Bxd3 Nxd3 16. a4 ) 12. h4 Nh6 13. Kg2 ( 13. Bxh6 Rxh6 14. Qd2 ) 13... Ng4 14. a3 ( 14. Bg5 f6 15. Bg6+ Kd8 16. exf6 ( 16. Bf4 Rc8 ) 16... gxf6 17. Bd2 Bd6 ) 14... a5 ( 14... Na5 15. Rb1 ( 15. b4 Nc4 ) ( 15. Bg5 Nc4 ( 15... Qxb2 16. Rb1 Qa2 ( 16... Qxa3 17. Ra1 Qb4 18. Bd2 ) 17. Bxe7 Kxe7 18. Qc1 Rac8 19. Qg5+ Kf8 20. Rhc1 ) ( 15... Bxg5 16. hxg5 Nc4 ( 16... Qxb2 17. Rb1 Qxa3 18. g6 ) 17. Qb1 Nxb2 ( 17... Qxb2 18. g6 Qxb1 19. Raxb1 ) 18. g6 f5 19. exf6 Nxf6 20. Nf4 ) 16. Qb1 Qxb2 ( 16... Nxb2 17. Bg6 Nc4 18. Bxe7 Qxb1 19. Rhxb1 Kxe7 20. Nf4 ) 17. Bxe7 Kxe7 18. Bxc4 Qxb1 19. Raxb1 dxc4 20. Rxb7 Rhb8 21. Rhb1 Rxb7 22. Rxb7 Kd8 ) 15... Rc8 ( 15... Nc4 16. a4 ) 16. Bd2 Nc4 17. Nf4 ) 15. b3 Kf8?! 16. Rf1 ( 16. Be3 Rc8 17. Qd2 ) 16... Rc8 17. Bb2 g6 18. Bc1 ( 18. Bc3 Kg7 19. Qd2 ) 18... Kg7 19. Bg5 Bxg5? 20. hxg5 Ne7 21. Nh4 Bb5 ( 21... Nc6 22. Bc2 Ne7 23. Qd2 Bb5 24. Bd3 Bxd3 25. Qxd3 ) ( 21... Nf5 22. Bxf5 exf5 23. a4 ) 22. Qd2 Bxd3 ( 22... Qa6 23. Bxb5 Qxb5 24. Rfb1 Rc7 25. Rb2 ( 25. f3?? Rc2 ) 25... Rhc8 26. Raa2 ) 23. Qxd3 Qa6 ( 23... Nc6 24. Rad1 ( 24. f3? Ncxe5 25. dxe5 Ne3+ ) 24... Rhe8 ( 24... Rc7 25. Nf4 Ne7 26. f3 Rc2+ 27. Rd2 Qa6 28. Kg1 ) 25. Rd2 Rc7 26. Nf4 ) 24. Qxa6 ( 24. Rad1 Qxd3 25. Rxd3 Rc2 26. Re1 Nc6 27. f3 Ncxe5 28. dxe5 Nxe5 29. Rdd1 ) 24... bxa6 25. Rac1 Nf5? ( 25... a4 26. b4 ( 26. bxa4 Rxc1 27. Rxc1 Rb8 ) 26... Rc4 27. Rxc4 dxc4 28. Rc1 Nd5 29. Nc3 ) 26. Rfe1? ( 26. Nxf5+ gxf5 ( 26... exf5 27. Rxc8 Rxc8 28. Rc1 Rxc1 29. Nxc1 ) 27. Nf4 ) 26... Rb8? ( 26... Ne7 27. Kg1 Rhd8 28. Rcd1 Rc2 29. Rd3 ) 27. Rc3 Rhc8 ( 27... a4 28. b4 a5 29. bxa5 Rb3 30. Nxf5+ gxf5 31. Rec1 ) 28. Rec1 Re8 29. Nxf5+ exf5 30. f3 Nxe5 31. dxe5 Rxe5 32. Nd4 Rbe8 33. Kf2 h4 34. gxh4 Rh8 35. Re3 Rxe3 36. Kxe3 Rxh4 37. Rc5 f4+ 38. Kd3

Black got in trouble after making a strange move 15…Kf8, thus hindering the coordination of the pieces. Another blunder was to trade bishops on g5, after which the active knight on g4 suddenly got trapped. There was no way to save it, but Black should have tried to at least get some compensation for it. Instead, she chose a way that led to a quick loss.

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