Syzygy endgame tablebases

Black is losing with DTZ 4

KRRRBvK.pgn lichess.org

Histogram: KRRRB winning vs. K (log scale)

Longest KRRRBvK phases

KRRRBvK statistics

8,540,417,868 (98.9%)
95,911,830 (1.1%)
KRRRBvK.json (?)