1. Ng2 hxg3+ 1... Kh2? 2. Nxh4 Kh3 3. Nf5 h5 4. Kg1 h4 5. gxh4 and the white pawn marches up the board to queen, 2. Kg1 h5 3. Kh1 h4 4. Nf4# 1-0 [Kjell Persson]