Syzygy endgame tablebases

White is winning with DTZ 1

Rxd8 DTM 8 Zeroing

Ka7 Draw Kb7 Draw Kc7 Draw

KRRBvKR.pgn lichess.org

Histogram: KRRB winning vs. KR (log scale)

⋮

Longest KRRBvKR phases

KRRBvKR statistics (unique positions)

White wins:
6,999,234,042 (85.3%)

Frustrated white wins:
58,627 (0.0%)

Draws:
1,192,835,879 (14.5%)

Black wins:
8,641,700 (0.1%)

KRRBvKR.json (?)