[Event "Pandolfini's Endgame Course"] [Site "by Bruce Pandolfini"] [Round "0"] [White "Endgame 090"] [Black "Critical Retreating Diagonal"] [Result "1/2-1/2"] [FEN "1K6/8/1k6/8/8/7p/7P/8 w - - 0 1"] 1. Ka8 Kc6 2. Ka7 Kd5 3. Kb6 Ke4 4. Kc5 Kf3 5. Kd4 Kg2 6. Ke3 Kxh2 7. Kf2 Kh1 8. Kg3 h2 9. Kh3 {#d} 1/2-1/2