It’s Your Move: daily chess puzzle # 105 – second part

White to play: the rubric from Teschner's book is:

White has sacrificed a piece but the attack doesn't succeed, so he forces an elegant draw.

(I) find the draw;

(II) in fact, there is a win…find this too.

This posting, the second of two, asks you to find the win.

Mazzoni v Kraidman, Tel Aviv 1964

Solution

Alas, I just trusted the rubric, as one does with puzzle books, found the pretty draw, and started to write the blog, including entering the position into Stockfish on my iPad. Immediately it flashed up 1 Bf6! Bf6 2 Qh6 with a +6 assessment.

Looking at the above position, I can well imagine why White in the game, and then Teschner in compiling his book, didn't see a win here. It doesn't look, on first sight, to be a typical +6 position. But looked at closer, the Bf6 is tied to defending g7, so when a N moves to g5, it can't be taken, and the Qc7 is tied to defending the Rb1, which would otherwise be a LPDO.

Lines such as 2…Be8 3 Ng5 Qc7 4 Ne6 show how gruesome the position actually is for Black- the Rf8 and Rb1 are both LPDOs.

Posted with Blogsy