Syzygy endgame tablebases

Black is losing DTZ 656

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

KRBBPvKQ.pgn lichess.org

Histogram: KRBBP winning vs. KQ (log scale)

Longest KRBBPvKQ phases

KRBBPvKQ statistics (unique positions)

White wins:
727,872,993,812 (53.7%)
Frustrated white wins:
13,053,407,274 (1.0%)
Draws:
447,419,064,034 (33.0%)
Frustrated black wins:
8,361,656,942 (0.6%)
Black wins:
157,978,130,642 (11.7%)
KRBBPvKQ.json (?)

KRBBPvKQ dependencies

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

KQRBBvKQ · KRBBPvK · KRRBBvKQ · KBBPvKQ · KRBBBvKQ · KRBPvKQ · KRBBNvKQ · KRBBvKQ

KRBBPvKQ.txt KRBBPvKQ.dot