TRIANGULATION A manoeuvre by the king that loses the move and set-up a zugzwang. [Event "White plays and wins"] [Date "1841"] [Round "Rnd:1"] [White "Walker "] [Black ""] [Result "1-0"] [FEN "8/8/8/k1p5/2P5/1K6/P7/8 w - - 0 1"] 1. Ka3 Kb6 2. Kb2 Ka5 3. Kb3 Kb6 4. Kc3 Ka5 5. Kd2 Kb4 6. Kd3 Ka3 7. Ke4 Ka4 8. Kd5 Kb4 9. a3+ 1-0 You must activate JavaScript to enhance chess game visualization.