A club of unexpected and interesting findings. Part 6

10. …  hf4

V.Tarokhin – A. Semenov

1. ab4  ba5 2. ba3  cb6 3. gh4  fe5 4. hg3  gf6 5. ed4  hg5 6. fe3  hg7 7. bc5  db4 8. ac5  gf4 9. eg5  gh6 10. gh2                                                                                                                          (White had an interesting 10. cd6 move here, while black had a wide range of sequels. Consider the options:

1)  10. …  ee3 11. ge7  fd6 12. df4  bc5 13. hg5  ab6 14. gh2  cb4 15. gh4  eg3 16. hf4  bd2 17. ce3 (17. ec3  de7 18. fe5=) 17. …  ab4 18. ed4  de7 19. fe5  df4 20. ge3 =

2) 10. … ec7 11. gh2  hf4 12. gg7  fh6 13. de5  cd6 14. ec7  bd6 15. hg3  bc5 16. gf4  ef6 17. ab2  de7 18. de3  cb4 with equal play.

3) 10. …  hh2 11. df4  bc5 12. db6  ac7 The game is equal.

Diagram 2

(There was a position with the outlines of “Filippov’s game”)

11. cb2

(Loses a turn 11. ab2?  из-за bc7 12. hg5 (12. ba3  fg5X) 12. …  ff2 13. eg3  ef6 14. gh4 (14. cd6  fg7 15. db8  ab4 16. cc7  eh4X) 14. …  ab4 15. ca3  bc5 16. db6  ca5 17. ab4  ed4 18. cg7  aa1 19. gh8  fg3 20. hf4  fg7X)

11. …  fg7 12. hg5?  (It loses. I should have played 12. ba3  ab4 13. cc7  bb4 14. ac5  ec3 15. db4  dc7 16. ge5  fb6=)

12. …  fh6 13. ef2. (13. de3  ef4 14. eg5 (14. ge5  ed6X) 14. … ff2 15. eg3  bc7X)

13. …  ab4.  The move wins too 13. …  bc7 14. gh4 (14. fe3  ab4 15. ca3  ef4X) 14. …  cd6 15. ba3  db4 16. ac5  dc7 17. ab2  hg5 18. ba3  gh6 19. ab4  ef4X)

14. ca3 ed6 (White has a lost position)

15. gh4

Diagram 3

15. .. dc5? (The error is probably due to time constraints. Black misses the opportunity to win the game by making a beautiful combination: 15. …  fg5! 16. hh8  ba5 17. df6  de7 18. fd8  de5  19. hd4  bc7 20. db6 ag1X)

16. de3  hg5 17. fg3  gf4 18. ee7  df6 19. hg5  ff2 20. gd8 fe1
and soon the game ended in a draw.

V. Petrov – B. Krasenkov

1. ef4  fg5 2. fe5  df4 3. ge5  bc5 4. cb4  ab6 5. bd6  ec5 6. dc3  de7! 7. cb4  gh4! 8. bd6  ec5 9. cd2 fe7

So far, everything was going according to theory. In the game, White decided to turn off the road and played 10. de3? And they lost quickly.: 10. … ef6! 11. ed4 ce3 12. fd4 hg3! 13. hf4 fg5. The Whites surrendered.

In the chart position, White still has a save.: 10. bc3!

A) 10. …  cd4 11. ef6!  ge5 (11. …  db2? 12. fd8  bc1 13. de3X) 12. cb4!  ba7 (12. …  ba5? 13. dc3  db2 14. ac1  ac3 15. ed2  cg3 16. hf8X)

(If 12. … dc3, then 13. de3 (13. bc5 bd4 14. db4 hg5 15. fg3 hf2 16. gc5 ef4 =) 13. … ca5 14. ab4 ac3 15. ed2 cg3 16. hf8 and black has to think about a draw)

13. bc5  dc3 14. db4  bd4 15. ab2  hg7 16. ba5  gf6 17. fg3  hf2 18. gc5  hg5 19. bc3  ed6 20. ce7  fd8 21. ab4  ef4 22. ef2  de7 23. hg3  fe3 24. bc5  ef6 26. cd6  ce5 27. gf4  eg3 28. hh6=

B) 10. …  ed6 11. cb4  df4 12. bd6  ce5 13. ab4  hg5 14. ab2  gh6 15. bc5  bd4 16. hg3  hf2 17. gc5  hg7 18. ba3  gf6 19. ab4  fg3 20. hd6  fe5 21. df4  gc1 22. cd6  ca3 23. bc5  hg5 24. ed2=

All this can be viewed, as well as other options in the DE (debut encyclopedia) volume 10, page 18.