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ANNOTATED GAME

mate in 12?
mika76 (1562) vs. tugger (1437)
Annotated by: tugger (1911)
Chess opening: Alekhine's defence (B02), Steiner variation
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Pages: 12
an average game, but a long mating pattern makes this game notable.
1. e4 Nf6
alekhine.

 
2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. Bd3
unusual, only one game on the database, and that was a draw.

 
5... dxe5 6. dxe5 Nc6 7. Nf3
and now into new territory as far as the database is concerned, and i've not been here before. white's only weakness appears to be his knight, vulnerable to a pin. it seems his bishop may have to move back to defend, wasting a go and passing the initiative over to me. we shall see.

 
7... Bg4 8. Bf4
indeed, develops a piece and protects the stranded pawn.

 
8... Nd4 9. Nbd2 e6 10. O-O Bb4 11. Be2
indeed, 5. Bd3 was a mistake after all.

 
11... Bxd2 12. Qxd2 Nxf3+ 13. gxf3
and this is the consequence of his subtle opening error. either this, or lose the pawn on c4. the latter is probably better, though it's really too complex a position at this stage for me to work out. i'd imagine that allowing me to take the pawn would encourage me to castle kingside so i can maximise my pawn advantage, and minimise the open file threat for both.
2 comments
 
13... Qxd2 14. Bxd2 Bh3 15. Rfd1 O-O-O
with his kingside destroyed, it seemed logical for me to exploit it, and castling queenside sends the message that i am looking at the kingside pawn push.

 
16. b3
seems a little passive. R(a)c1 would give extra support and develop his rook onto my king's file in the process, or even R(d)c1, loading up the rooks on my queenside. but this wastes another move, as he'll be looking to push these pawns for sure. and besides, he doesn't really need to back his pawn up, it's in no immediate danger.
3 comments
 
16... g5 17. c5
? i think this is a poor move, because he unleashes the knight, who was rather sedate with the pawn blocking his flight.

 
17... Nd5 18. b4
if he'd have just played 16. b4 instead of b3, then he would have his go from this position, effectively giving himself a free move. white is losing too many tempi.

 
18... Rhg8 19. b5 f6 20. a4
now white is in a hurry to push the pawns, even allowing me to take the lead.

 
20... fxe5 21. a5 Nf4
and now black is looking very strong. i'm very surprised white has allowed me to block his f-pawns without resistance. i'd have played f4 long ago.

 
22. Bc4
good, stops g4 for the time being.

 
22... Rg6
not any more!

 
23. b6 a6 24. Bc3
? a subtle mistake, but one that loses. i believe Be3 was the only move to save, as the bishop was vulnerable to capture from the rook. the reason the bishop is so important to white is he must take the knight with it at some stage, though not yet, or he loses material. now he cannot capture the knight, and as such is in deep trouble. i cannot be 100% sure, but i think black now has mate in 12, assuming best play from both. if anyone feels like analysing, feel free to post your findings. i spent hours analysing this part of the game, and i reckon mate in 12. i get there quicker, though.
1 comment
 
24... g4
!

 
25. Rxd8+
an attempt to trap me into a mistake...

 
25... Kxd8
forced.

 
26. bxc7+
an aggressive pawn...
1 comment
 
26... Ke7
! taking the pawn drops the knight after Bxe5 , blocking allows Bxe6 , forcing my rook or knight to take and allowing him to escape mate, and Ke8 is out of the question as he can queen with check, thus winning.

 

Pages: 12