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Problem ID: 0290983
4...Kf5! is a really nice example of using the opposition to gain a tempo to queen first
Fantastic, I was thinking 3... e5? Seeing that I could promote first and control the h8 square in time. But that obviously fails since white can just come and stop the pawn with his king, totally forgot that option haha.
Thankyou Powerlevel_9001 for taking the time to submit such a lovely endgame problem.
I don't see what is wrong with Kd7 Kf6 e5. It seems that if white goes for the g6/h5 pawns he is a tempo short, and if he takes on e5, then black gets opposition with ...Ke7.
According to a tablebase the line you suggest ozzie leads to a draw, unlike the winning line of the puzzle.
In other words, I should go look it up. :-)
OK, black has the opposition, but it is not valuable enough to force the win of the h-pawn. And black trading the h4 pawn for the g6 pawn gives an easy draw for white.
What's really interesting is that if you move all the pawns one square to the right, then pushing the pawn is the only way to win.
(with all pieces one to the right) 1.Kd5 Kc7 2.Ke6 d5! is the only way to win, confirmed with tablebase.
Thanks Ozzie and Powerlevel. Variation http://www.chess.com/tactics/server?id=357517
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