The Endgame Tactician: A tricky pawn endgame.
While studying possible variations of the game Burmakin-Schmittdiel, Oberwart 2002 I happened across the following pawn endgame:
Black to move. How could he have drawn this position?
Takchess took a stab at it. 1..Kf7 2.h5 h6 3.Ke5 Ke7 4.f5 Kf7 5.f6 Kf8. It's a natural defense seizing the opposition and eliminating White's reserve tempo.
Unfortunately, this is A Tricky Endgame and White can defeat this defense!
The corresponding squares are highlighted. If White plays Kf5, Black must plays Kf7 or White will win the h-pawn. If White plays Ke6, Black must play Ke8 or White will promote his f-pawn. e5/f8 also correspond because they are the only (accessible) squares that border the other corresponding squares.
Now the attack is simple. 6.Kf4 Kg8. White plays a waiting move, threatening both the red and green squares. Black does the same. 7.Ke4 White plays another waiting move, but Black's run out of them--7...Kf8 8.Ke5 Kf7 9. Kf5 Kf8 10.Kg6 +/-.
Any more ideas?