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Syzygy endgame tablebases

Black is losing with DTZ 128

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

KQRBNvKQ.pgn

Histogram: KQRBN winning (log scale)

Longest KQRBNvKQ phases

KQRBNvKQ statistics

352,377,987,983 (89.6%)
20,461,439 (0.0%)
37,723,502,881 (9.6%)
2,968,124,907 (0.8%)
KQRBNvKQ.json (?)