Syzygy endgame tablebases

Black is losing with DTZ 101

This is a blessed loss. Mate can be forced, but a draw can be achieved under the fifty-move rule.

KQQvKBB.pgn lichess.org

Histogram: KQQ winning vs. KBB (log scale)

Longest KQQvKBB phases

KQQvKBB statistics (unique positions)

White wins:
7,181,704,840 (99.3%)
Frustrated white wins:
26,140,940 (0.4%)
Draws:
19,622,210 (0.3%)
Black wins:
5,111,728 (0.1%)
KQQvKBB.json (?)

KQQvKBB dependencies

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

KBBvKQ · KQQvKB

KQQvKBB.txt KQQvKBB.dot