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ANNOTATED GAME

Bonch–Osmolovsky Defence to the KG
N.N (1761) vs. tisamon (1731)
Annotated by: tisamon (1835)
Chess opening: KGA (C34), Bonsch-Osmolovsky variation
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20. Rae1 Qc4
Necessary to continue to protect the weak pawn (the slight advantage Black has).
1 comment
 
21. Rf3 Rcd8
I decided that the d-file was a better file for the rook - to better support the isolani and free the Queen. Looking back, I believe 16...Rad8 was better.

 
22. Be5
His Rf3 move suddenly became clearer - to build a threat at g7.

 
22... f6
There are no alternatives I can see - g6 would have critically weakened the dark squares with a dark-squared bishop and queen on the board, Bd6 just hangs the bishop or mate.

 
23. Bxf6
And this I think is where White loses the game - looking for the bishop sac to tear open the kingside. A very enterprising idea, but it just didn't have the necessary followup this time.
3 comments
 
23... gxf6 24. Rxf6
The King is exposed at the cost of a bishop for a pawn.

 
24... Rxe1+
However, White's firepower can be drastically reduced through trading off.

 
25. Qxe1 Qe4
Looking to trade Queen's with a potential mating threat on b1.
3 comments
 
26. Qg3+ Kh8
And here White resigned - the attack has fizzled with Black up a bishop for a pawn. I feel the resignation may have been a bit premature but he was definitely disadvantaged.
3 comments
 

Pages: 12