Syzygy endgame tablebases

Black is losing with DTZ 4

Rb6 Loss with DTZ 3 Rc6 Loss with DTZ 3 Rg6+ Loss with DTZ 3 Rh6 Loss with DTZ 3 Ra6 Loss with DTZ 1 Rd6 Loss with DTZ 1 Re6 Loss with DTZ 1 Rf1 Loss with DTZ 1 Rf2 Loss with DTZ 1 Rf3 Loss with DTZ 1 Rf4 Loss with DTZ 1 Rf5 Loss with DTZ 1 Kg1 Loss with DTZ 1 Kg2 Loss with DTZ 1 Kh1 Loss with DTZ 1 Rxf7 Zeroing

KRRRBvKR.pgn lichess.org

Histogram: KRRRB winning vs. KR (log scale)

⋮

Longest KRRRBvKR phases

KRRRBvKR statistics (unique positions)

White wins:
437,508,060,186 (99.8%)

Frustrated white wins:
33,522 (0.0%)

Draws:
638,156,682 (0.1%)

Black wins:
267,261,108 (0.1%)

KRRRBvKR.json (?)