I play poorly when I am tired. Nonetheless, I do a fair amount of tactics training late at night as I'm drifting off to sleep, and in the early morning before the first cup of coffee. Such training may be less productive than training while awake and focused. This evening I looked at this problem from the Anthology of Chess Combinations. Within a few seconds, I saw Black's idea for drawing the game. However, I overlooked a key resource for White. I made a hasty move and the Chess Informant Solver's Kit software told me the answer was wrong. Another minute's observation revealed White's resource, and then the correct first move of the problem became obvious.
Black to move
The problem is number 256 in the Anthology, and comes from Unzicker -- Averbakh 1952.
Scholastic players and parents: The label "Problem of the Week" links to posts that contain my "lesson of the week." These blog posts serve to reinforce what is presented in my after school and in-school chess clubs.
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