Syzygy endgame tablebases

Black is winning with DTZ 3

KQBvKQQ.pgn lichess.org

Histogram: KQB losing vs. KQQ (log scale)

Longest KQBvKQQ phases

KQBvKQQ statistics (unique positions)

White wins:
156,280,805 (2.5%)
Draws:
1,691,497,201 (27.3%)
Frustrated black wins:
5,568 (0.0%)
Black wins:
4,353,955,654 (70.2%)
KQBvKQQ.json (?)

KQBvKQQ dependencies

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

KQQvKB · KQBvKQ · KQQvKQ

KQQvKQB.txt KQQvKQB.dot