Syzygy endgame tablebases

Tablebase draw

Qf4+ Draw Qg3+ Draw

Qg4 Loss with DTZ 15 Qe4 Loss with DTZ 9 Qe7 Loss with DTZ 3 Qg5 Loss with DTZ 3 Kd7 Loss with DTZ 1 Ke7 Loss with DTZ 1 Ke8 Loss with DTZ 1 Qe1 Loss with DTZ 1 Qf2 Loss with DTZ 1 Qf6 Loss with DTZ 1 Qh2+ Loss with DTZ 1 Qh3 Loss with DTZ 1 Qh5 Loss with DTZ 1 Qh6 Loss with DTZ 1 Qh7 Loss with DTZ 1 Qh8 Loss with DTZ 1 Qxd4 Zeroing Qxh1 Zeroing

KRRBNvKQ.pgn lichess.org

Histogram: KRRBN winning vs. KQ (log scale)

Longest KRRBNvKQ phases

KRRBNvKQ statistics (unique positions)

White wins:
334,411,661,737 (79.2%)

Frustrated white wins:
58,336,799 (0.0%)

Draws:
81,928,183,430 (19.4%)

Black wins:
5,795,099,484 (1.4%)

KRRBNvKQ.json (?)

KRRBNvKQ dependencies

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

KRRBNvK · KRBNvKQ · KRRNvKQ · KRRBvKQ

KRRBNvKQ.txt KRRBNvKQ.dot