Syzygy endgame tablebases

Black is losing with DTZ 108

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

KQRBvKBB.pgn lichess.org

Histogram: KQRB winning vs. KBB (log scale)

Longest KQRBvKBB phases

KQRBvKBB statistics (unique positions)

White wins:
404,165,225,678 (93.4%)
Frustrated white wins:
70,956,622 (0.0%)
Draws:
28,470,977,228 (6.6%)
Black wins:
88,259,498 (0.0%)
KQRBvKBB.json (?)

KQRBvKBB dependencies

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

KRBvKBB · KQBvKBB · KQRvKBB · KQRBvKB

KQRBvKBB.txt KQRBvKBB.dot