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ANNOTATED GAME
Winning the bishop vs. knight endgame
claespiper (1650) vs. tag1153 (1496)
Annotated by: claespiper (1724)
Chess opening: Scandinavian defence, Lasker variation (B01)
claespiper (1650) vs. tag1153 (1496)
Annotated by: claespiper (1724)
Chess opening: Scandinavian defence, Lasker variation (B01)
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42. Rxb6 |
Winning a pawn and creating two connected passed pawns that eventually will win me the game. | |||||||
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42... Rc8 |
Attacking the c-pawn. | |||||||
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43. Rc6 |
I'm offering to trade an active rook for a passive one, but I'm counting on my connected passed pawns... | |||||||
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43... Rxc6 |
Black takes the offer. | |||||||
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44. Bxc6 |
Taking back. | |||||||
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44... Ke7 |
Moving towards the passed pawns. | |||||||
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45. Bd5 |
Stopping Na2 and Nb3 and aiming to get back to c4. | |||||||
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45... g5 |
Black misses the chance to get his knight back in to the game. Better might have been 45...Nd3 46. Kg2 e4 creating an escape square for the knight. | |||||||
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46. Bc4 |
(!) White has won the game! The knight can go nowhere! Blacks king can't go outside the square formed by b4-b8-f4-f8 (also known as "the square of the pawn") as this would allow the pawn on b4 to queen. And the Black king can't touch the "little fortress" the bishop and the pawns have built. The White king can force the trade of knight and bishop on d3*. Then he can pick up the passed d-pawn**. Afterwards he can calmly walk over and win the remaining kingside pawns as the b- and c-pawns protect themselves. (If Black takes the c-pawn, the b-pawn is unstoppable.) * At some point Black has to trade knight for bishop with ...e4 and ...Nd3, Bxd3, dxe3 otherwise White will get the knight for free with help of the king. (If you want you can use http://gameknot.com/chess.pl?bd=8409329 to play out the moves quoted below.) ** The play I envisioned was 46...e4 47. Kg2 (moving to get inside the square of the soon passed d-pawn) 47...Nd3 48. Bxd3 exd3 49. Kf1 (White king is now inside the square) 49...Kd6 50. c4 (stopping the black king and winning). If Black plays 50...Ke5 White plays 51. b5 shrinking the square of the pawn preventing the Black king from safeguarding the passed d-pawn. For an explanation of "the square of the pawn" see http://en.wikipedia.org/wiki/King_and_pawn_versus_king_endgame#Rule_of_the_square | |||||||
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46... Kd6 |
Moving towards the passed pawns. | |||||||
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47. f3 |
Stopping any thoughts of an immediate bishop-knight trade on d3 that would create a passed pawn. Allows black to create passed pawn on e4. At this point I want to trade away or lock up the kingside pawns and then walk down and force the bishop-knight trade. | |||||||
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47... e4 |
Creating a passed pawn. | |||||||
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48. fxe4 fxe4 |
Black has a passed pawn... | |||||||
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49. Kg2 |
... that the White king can catch. | |||||||
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49... h5 50. Kf2 |
White is going to play Ke3-Kd2 forcing a trade on d3 where White wins a knight and a pawn for a bishop. After that Black can't stop White from winning the kingside pawns and queening shortly after. Black resigns. Thanks tag1153 for a good game. | |||||||
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