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Syzygy endgame tablebases

Black is losing with DTZ 156

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

KRRBBvKQ.pgn

Histogram: KRRBB winning (log scale)

Longest KRRBBvKQ phases

KRRBBvKQ statistics

331,730,124,110 (80.4%)
5,869,452 (0.0%)
76,745,995,384 (18.6%)
328,823,556 (0.1%)
4,014,022,174 (1.0%)
KRRBBvKQ.json (?)