Syzygy endgame tablebases

Black is losing with DTZ 101

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

KRRBPvKB.pgn lichess.org

Histogram: KRRBP winning vs. KB (log scale)

Longest KRRBPvKB phases

KRRBPvKB statistics (unique positions)

White wins:
1,501,426,483,558 (100.0%)
Frustrated white wins:
16 (0.0%)
Draws:
714,563,368 (0.0%)
Black wins:
21,978,476 (0.0%)
KRRBPvKB.json (?)