Endgame Disaster

(NN vs. Eyesofblue)
(White to play.... and lose(?))

Something a little bit different here on BlueEyedRook Web log.... find the losing move. Other candidates might exist, but the most obvious is the simple but painful 1. h5(?). This is what occurred in the game. The rest is simple king/pawn game semantics... black trying to avoid opposition and circling around and attacking the base of the pawn chain (here g4).

Because white does not have the opposition, black's king can merely stroll down to g4. One such path is: 1... e5 (pink). 2... f4 (green). 3... f3 (black). White's king can only put up a meager reistance (preventing the pawn falling on black's second move, but it cannot hold out) (2. g2 (pink) 3. h3 (green). 4. h2 (black).