Syzygy endgame tablebases

White is winning with DTZ 1

Rxd1+ DTM 14 Zeroing Bf6+ Win with DTZ 2

Nb4 Draw Nc1 Draw Ka7 Draw Ka8 Draw Kb7 Draw Bc3 Draw Be5 Draw Bg7 Draw

Rc1 Loss with DTZ 2 Bb2 Loss with DTZ 2 Rb1 Loss with DTZ 1 Nc3 Loss with DTZ 1 Bd4 Loss with DTZ 1

KRBNvKQ.pgn lichess.org

Histogram: KRBN winning vs. KQ (log scale)

Longest KRBNvKQ phases

KRBNvKQ statistics (unique positions)

White wins:
2,387,162,558 (29.9%)

Frustrated white wins:
1,436,216 (0.0%)

Draws:
3,769,142,851 (47.2%)

Black wins:
1,820,891,497 (22.8%)

KRBNvKQ.json (?)

KRBNvKQ dependencies

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

KRBNvK · KBNvKQ · KRNvKQ · KRBvKQ

KRBNvKQ.txt KRBNvKQ.dot