Syzygy endgame tablebases

Black is losing with DTZ 14

KRRBNvKB.pgn lichess.org

Histogram: KRRBN winning vs. KB (log scale)

Longest KRRBNvKB phases

KRRBNvKB statistics (unique positions)

White wins:
489,103,982,348 (100.0%)
Draws:
235,600,366 (0.0%)
Black wins:
3,728,840 (0.0%)
KRRBNvKB.json (?)