Syzygy endgame tablebases
White to move
Black to move
JavaScript required for interactive board view.
Black is losing with DTZ 6
Kg1
Loss with DTZ 5
Kg2
Loss with DTZ 5
Kh1
Loss with DTZ 5
Rb6
Loss with DTZ 3
Rc6
Loss with DTZ 3
Rf1
Loss with DTZ 3
Rf2
Loss with DTZ 3
Rf4
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
Rf3
Loss with DTZ 1
Rf5
Loss with DTZ 1
Rf7
Loss with DTZ 1
Rf8+
Loss with DTZ 1
KRRRBvKR.pgn
lichess.org
Histogram: KRRRB winning vs. KR (log scale)
⋮
Longest KRRRBvKR phases
KRRRB winning with DTZ 61
KRRRB winning with DTZ 107 (frustrated)
KRRRB losing with DTZ 3
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
(?)