Syzygy endgame tablebases

White is winning with DTZ 1

Bxe4 Zeroing Qxe4 Zeroing Qd6+ Win with DTZ 4

KQBBvKQQ.pgn lichess.org

Histogram: KQBB winning vs. KQQ (log scale)

Longest KQBBvKQQ phases

KQBBvKQQ statistics (unique positions)

White wins:
73,255,125,086 (21.6%)

Frustrated white wins:
47,379,422 (0.0%)

Draws:
66,887,261,032 (19.7%)

Frustrated black wins:
2,955,100,724 (0.9%)

Black wins:
196,135,819,030 (57.8%)

KQBBvKQQ.json (?)

KQBBvKQQ dependencies

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

KQQvKBB · KQBBvKQ · KQQvKQB

KQBBvKQQ.txt KQBBvKQQ.dot