Syzygy endgame tablebases
White to move
Black to move
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Black is losing with DTZ 114
Bf3
Loss with DTZ 113
Bc2
Loss with DTZ 3
Be2
Loss with DTZ 3
Ka3
Loss with DTZ 1
Ka5
Loss with DTZ 1
Kb3
Loss with DTZ 1
Kb4
Loss with DTZ 1
Kb5
Loss with DTZ 1
Bb3
Loss with DTZ 1
Bg4
Loss with DTZ 1
Bh5
Loss with DTZ 1
a1=B
Zeroing
a1=N
Zeroing
a1=Q
Zeroing
a1=R
Zeroing
This is a blessed loss.
Mate can be forced, but a draw can be achieved under the fifty-move rule.
KRRRvKBP.pgn
lichess.org
Histogram: KRRR winning vs. KBP (log scale)
⋮
Longest KRRRvKBP phases
KRRR winning with DTZ 22
KRRR winning with DTZ 115 (frustrated)
KRRR losing with DTZ 105 (frustrated)
KRRR losing with DTZ 11
KRRRvKBP statistics (unique positions)
White wins:
1,404,881,530,614 (98.6%)
Frustrated white wins:
450,893,886 (0.0%)
Draws:
13,463,484,396 (0.9%)
Frustrated black wins:
15,286,098 (0.0%)
Black wins:
5,771,072,094 (0.4%)
KRRRvKBP.json
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