Syzygy endgame tablebases
White to move
Black to move
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Black is losing with DTZ 112
Rc4+
Loss with DTZ 111
Ka5
Loss with DTZ 1
Ka6
Loss with DTZ 1
Kb5
Loss with DTZ 1
Kc5
Loss with DTZ 1
Kc6
Loss with DTZ 1
Ra3
Loss with DTZ 1
Rb3
Loss with DTZ 1
Rc5
Loss with DTZ 1
Rc6
Loss with DTZ 1
Rc7
Loss with DTZ 1
Rc8
Loss with DTZ 1
Rd3
Loss with DTZ 1
Re3
Loss with DTZ 1
Rf3
Loss with DTZ 1
Rg3
Loss with DTZ 1
Rh3+
Loss with DTZ 1
c1=Q
Zeroing
c1=B
Zeroing
c1=N
Zeroing
c1=R
Zeroing
This is a blessed loss.
Mate can be forced, but a draw can be achieved under the fifty-move rule.
KRRRvKRP.pgn
lichess.org
Histogram: KRRR winning vs. KRP (log scale)
⋮
Longest KRRRvKRP phases
KRRR winning with DTZ 58
KRRR winning with DTZ 112 (frustrated)
KRRR losing with DTZ 104 (frustrated)
KRRR losing with DTZ 13
KRRRvKRP statistics (unique positions)
White wins:
1,322,639,233,590 (97.4%)
Frustrated white wins:
111,036 (0.0%)
Draws:
22,126,235,310 (1.6%)
Frustrated black wins:
152,142 (0.0%)
Black wins:
12,931,462,362 (1.0%)
KRRRvKRP.json
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