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Syzygy endgame tablebases

Black is losing with DTZ 380

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

KRBBNvKQ.pgn

Histogram: KRBBN winning (log scale)

Longest KRBBNvKQ phases

KRBBNvKQ statistics

274,292,994,419 (62.4%)
99,663,112 (0.0%)
138,469,313,381 (31.5%)
2,380,920,624 (0.5%)
23,985,948,792 (5.5%)
KRBBNvKQ.json (?)