Syzygy endgame tablebases

Black is winning with DTZ 50

KRBBvKQ.pgn lichess.org

Histogram: KRBB losing vs. KQ (log scale)

Longest KRBBvKQ phases

KRBBvKQ statistics

2,350,565,700 (30.3%)
3,882,463,509 (50.0%)
125,049,432 (1.6%)
1,400,809,507 (18.1%)
KRBBvKQ.json (?)