Syzygy endgame tablebases

Black is losing with DTZ 6

Kb8 Loss with DTZ 5 Ka8 Loss with DTZ 3 Kb7 Loss with DTZ 3 Ra5 Loss with DTZ 3 Rc5 Loss with DTZ 3 Rd4 Loss with DTZ 3 Rd7 Loss with DTZ 3 Rd8 Loss with DTZ 3 Rg5 Loss with DTZ 3 Rh5 Loss with DTZ 3 Rb5+ Loss with DTZ 1 Rd6 Loss with DTZ 1 Re5 Loss with DTZ 1 Rf5 Loss with DTZ 1 Rxd3 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 (?)