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Syzygy endgame tablebases

Black is losing with DTZ 164

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

KQRRvKQB.pgn

Histogram: KQRR winning (log scale)

Longest KQRRvKQB phases

KQRRvKQB statistics

280,241,476,261 (78.5%)
1,125,682 (0.0%)
43,410,145,395 (12.2%)
59,658,138 (0.0%)
33,204,871,590 (9.3%)
KQRRvKQB.json (?)