The Lasker Trap is a chess opening trap in the Albin Countergambit, named after Emanuel Lasker. It is unusual in that it features an underpromotion as early as the 7th move.
The Albin Countergambit begins with the moves
- 1. d4 d5
- 2. c4 e5
- 3. dxe5 d4
The Black pawn on d4 is stronger than it appears.
- 4. e3?
Careless. Usual and better is 4.Nf3.
- 4. ... Bb4+
- 5. Bd2 dxe3!
(See diagram.) Now White´s best option is to accept weak pawns with 6.fxe3.
- 6. Bxb4??
Blundering into the Lasker Trap.
In an 1899 consultation game in Moscow, Blumenfeld, Boyarkow, and Falk playing White against Lasker tried 6.Qa4+?, but Black wins after this move also.
The game continued 6...Nc6 7.Bxb4 Qh4 8.Ne2 Qxf2+ 9.Kd1 Bg4 10.Nbc3 O-O-O+ 11.Bd6 cxd6 12.e6 fxe6 13.Kc1 Nf6 14.b4 d5 15.b5 Ne5 16.cxd5 Nxd5 17.Qc2 Nb4 18.Nd1+ Nxc2 19.Nxf2 Rd1 White resigns.
- 6. ... exf2+
Now 7.Kxf2 would lose the queen to 7...Qxd1, so White must play 7.Ke2.
- 7. Ke2 fxg1=N+!!
Underpromotion is the key to the trap.
Instead 7...fxg1=Q 8.Qxd8+ Kxd8 9.Rxg1 is OK for White.
Now 8.Rxg1 Bg4+ wins White´s queen, so the king must move again.
- 8. Ke1 Qh4+
If White tries 9.g3 then 9...Qe4+ wins the rook on h1.
- 9. Kd2 Nc6
White is hopelessly lost. After 10.Bc3 Bg4 followed by 11...0-0-0+ is crushing.
References
- Burgess, Graham (2000). The Mammoth Book of Chess. Carroll & Graf. ISBN 0786707259.
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