E10: Blumenfeld Gambit

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. e3 Be7 5. Be2 O-O 6. O-O b6 7. Nc3 d5 8. cxd5 exd5 9. Re1 Black has an active position 9... Bb7 10. Bd2 Nbd7 11. Rc1 a6 Prevents intrusion on b5 12. Bd3 Ne4 13. Ne2 c4 Black threatens to win material: c4xd3 14. Bb1 b5 15. h3 15. Qc2 Bd6=/+ 15... Bd6-/+ 16. b3 16. Qc2!?-/+ 16... Rc8-+ 17. Nc3 b4 18. Nxe4 >= 18. Nxd5!? Bxd5 19. bxc4-/+ 18... dxe4-+ 19. Nh2? 19. bxc4 exf3 20. e4 fxg2 21. c5-+ 19... c3 20. Bxc3 20. Nf1 is no salvation 20... f5-+ 20... bxc3 21. Qh5 f5 22. Qe2 22. Bc2 does not win a prize 22... Bc6 23. Nf1 Nb6-+ 22... Ba3 23. Rc2 23. Rcd1 cannot undo what has already been done 23... Nf6-+ 23... Nf6 24. f4 24. Rd1 cannot change destiny 24... Nd5-+ 24... Nd5 25. Nf1 Nb4 26. Ng3 Nd3 26... Qh4 might be the shorter path 27. Kh2-+ 27. Rf1 Qh4 28. Nh1 28. Kh2 doesn't improve anything 28... Nb4-+ 28... Rf6 28... g5 seems even better 29. g3 Qxh3 30. Qd1 gxf4 31. Rh2-+ 29. Nf2 29. Kh2 a fruitless try to alter the course of the game 29... Rg6-+ 29... Nb4 30. Nd1 30. Kh2 is not the saving move 30... Nxc2 31. Bxc2 Rg6-+ 30... Nxc2 31. Bxc2 Rg6 32. Kh1 a5 32... >= Bd5 and Black can already relax 33. Qf2 Qxf2 34. Nxf2-+ 33. Qb5 Ba6 34. Qxf5 34. Qd5+ there is nothing better in the position 34... Kh8 35. Rg1-+ 34... Bxf1 35. Qxc8+ Bf8 36. Bxe4 36. Qe6+ doesn't do any good 36... Rxe6 37. Bxe4 Rxe4 38. Kh2 c2 39. b4 cxd1=Q 40. b5 Qe2 41. b6 Qxg2# 36... Bxg2+! Demolition of pawn structure 37. Bxg2 Qe1+ Theme: Double Attack 38. Kh2 38. Bf1 doesn't get the bull off the ice 38... Qxf1+ 39. Kh2 Qg2# 38... Qg3+ 38... Qg3+ 39. Kh1 Qxg2# 0-1 [Fritz 9 (5s)]