Syzygy endgame tablebases

Black is losing with DTZ 20

KRBBBvK.pgn lichess.org

Histogram: KRBBB winning vs. K (log scale)

Longest KRBBBvK phases

KRBBBvK statistics (unique positions)

White wins:
9,059,194,644 (98.3%)
Draws:
157,546,254 (1.7%)
KRBBBvK.json (?)