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Subject: How many programs play 1...bxc2!

Author: Jorge Pichard

Date: 12:28:16 05/11/03



L.Carranza - A.Alekhine, Buenos Aires, 1926

Black to play

[D]r2qk2r/3bbppp/5n2/BP2R3/3p4/1p6/1PP2PPP/RN2Q1K1 b - - 0 1

At first sight, Black seems under some pressure. His Queen is under attack, the
King is in the center, White has strong pressure along the e-file. But such an
impression is untrue! The first thing that comes to mind is 16...Rxa5 17.Rxa5
bxc2.  After 18.b6 cxb1=Q 19.Qxb1 0-0 (19...Qxb6? 20.Ra8+ wins for White)Black
prevails.  White can make things a bit more complex with 18.Rxe7+! Kf8!
(18...Qxe7? 19.Ra8+ wins) 19.Rxd7! Nxd7 20.Ra1 cxb1=Q 21.Qxb1, and while Black
is clearly better, he is still facing some technical challenges.

Instead of all this, Alekhine comes with a much better and quicker solution.
White's a5-Bishop is pinned and Black's b-pawn is dangerously close to her
destination square. So the 4th World Champion strikes with...

16...bxc2!

Pawn attacks a Knight, but what about a Queen? She is being sacrificed for a
victory!

17.Bxd8

Also hopeless was 17.Rxe7+ Qxe7 18.Qxe7+ Kxe7 19.Bb4+ Ke6; as well as 17.Nc3
(d2) Rxa5!

17...Rxa1

This move represents a key point of Black's combination. Now White has no
defense against the c2-pawn becoming a Queen.

18.Rxe7+

Another way 18.Bxe7 cxb1=Q 19.Bxf6+ Be6 was lost for White as well.

18...Kxd8

White resigned



Analysis by Fritz 8:


1...bxc2 2.Na3 Rxa5
  -+  (-2.50)   Depth: 7/21   00:00:00  142kN
  -+  (-3.03)   Depth: 14/40   00:00:38  32307kN








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