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Syzygy endgame tablebases

Black is losing with DTZ 106

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

KQRBBvKR.pgn lichess.org

Histogram: KQRBB winning vs. KR (log scale)

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Longest KQRBBvKR phases

KQRBBvKR statistics

426,138,383,400 (99.7%)
80,126 (0.0%)
1,101,104,630 (0.3%)
185,351,830 (0.0%)
KQRBBvKR.json (?)