Jyrki Heikkinen - Matti Kauranen

Winckelmann-Reimer Gambit, 10 + 10 min., Espoo 1991

If the c2-Pawn were at c4, and it were Black's move, this would be the main line of the Diemer-Duhm Gambit.

7. Bg5 h6 8. Bh4 exf3 9. Nxf3 Nbd7 10. Bd3 c5 11. O-O Qc7 12. Qe2 Nd5

12. -O-O 13. Ne5 cxd4? 14. Bxf6 Nxf6 15. Rxf6 gxf6 16. Qg4+ Kh8 17. Qh4 Kg7 18. Ng4 Rh8 19. Qxf6+ Kh8 20. Ne5 +- threatening Rf1.

13. Ne5

White could have tried a dirty trick 13. Nd2?! hoping for 13. -Nxc3?? 14. Qxe6+!! fxe6 15. Bg6#. 13. c4 is poor because Black can exchange White's strong Bishop with Nf4 and Nxd3.

13. -Nxc3

13. -O-O 14. c4 +- Nc3 15. Qg4 threatening both Nxd7 and Bf6.

14. Rxf7!?

The key move. I saw 14. -Nxe2, but I also thought that my King was at h1! It was thus quite a shock to see my Queen gone with a check. Fortunately, this intuitive sacrifice was a bit better, or at least more obfuscating, than I had imagined...

14. -Nxe2+ 15. Bxe2

15. -cxd4

• 15. -Nxe5 16. Rxc7 and 17. Bh5 +-.
• 15. -g5 16. Bh5 (16. Bg3!?) Nxe5 (16. -Kd8!?) 17. Rxc7+ Kf8 (17. -Kd8 18. Bg3!?) 18. Rf1+ Kg8 19. dxe5 gxh4 20. Rff7 1-0.
• 15. -Qd6 16. Bh5 Nxe5 (16. -Qxd4+ 17. Rf2+ g6 18. Bxg6#) 17. Re7+ Kd8 (17. -Kf8 18. Re8#) 18. Rxg7+ 1-0.
• 15. -Qd8 16. Bxd8 Nxe5 17. Rxg7 cxd4 18. Bf6 Nc6 (18. -Nd7 19. Rxd7) 19. Bh5+ Kf8 20. Rf1 1-0.
• 15. -Qb6
  • 16. Bh5 g5 (16. -Nxe5 17. Re7+ Kf8 18. Re8# or 17. -Kd8 18. Rxg7#) 17. Rxd7+ Kf8 18. Rf1+ Kg8 19. Ng6! Bxd7 (19. -gxh4 20. Rf8#) 20. Ne7+ Kg7 21. Rf7#.
  • 16. Re7+ is more artistic
    • 16. -Kd8 17. Rxd7+ Ke8 18. Re7+ Kf8 (18. -Kd8 19. Nf7#) 19. Rf1+ mating in 3.
    • 16. -Kf8 17. Rf1+ Nf6 18. Ng6+ Kg8 19. Rxf6! gxf6 (19. -Qd8! 20. Rff7!?) 20. Bxf6 Rh7 21. Re8+ Kf7 22. Rf8+!! Kxg6 23. Bd3+ Kh5 24. Rg8! Qb1+ (24. -e5 25. g4+ Bxg4 26. Bg6#) 25. Kf2 Qd1 26. Bg6+ Kg4 27. h3+ Kf4 28. g3# is a beautiful mate.
• 15. -Qxe5! 16. Re7+
  • 16 -Kd8! 17. dxe5 g5 18. Rxe6 (18. Rxd7+) gxh4 19. Bh5 -+ is the only winning line for Black that I have found.
  • 16. -Kf8 17. dxe5 g5 18. Rxe6! gxh4 19. Rf1+ Kg7 20. Re7+ Kg6 21. Bd3+ Kh5 22. Rf5+ Kg6 23. Rf6+ Kh5 24. Be2+ Kg5 25. Rg7#.

16. Re7+ Kf8 17. Rf1+ Kg8 18. Re8+ Kh7 19. Bd3+ g6 20. Rf7#

PGN version.