Syzygy endgame tablebases

Black is losing with DTZ 15

KQRRvKQN.pgn lichess.org

Histogram: KQRR winning vs. KQN (log scale)

Longest KQRRvKQN phases

KQRRvKQN statistics (unique positions)

White wins:
304,560,050,288 (82.5%)
Frustrated white wins:
472,022 (0.0%)
Draws:
45,309,758,456 (12.3%)
Frustrated black wins:
3,239,754,956 (0.9%)
Black wins:
15,995,328,564 (4.3%)
KQRRvKQN.json (?)

KQRRvKQN dependencies

To probe all KQRRvKQN positions, these tables and their transitive dependencies are also required:

KQNvKRR · KQRRvKN · KQRvKQN · KQRRvKQ

KQRRvKQN.txt KQRRvKQN.dot