Syzygy endgame tablebases
White to move
Black to move
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Black is losing with DTZ 154
Qd3+
Loss with DTZ 153
Qe4
Loss with DTZ 4
Qf5
Loss with DTZ 2
Qg6
Loss with DTZ 2
Qa1
Loss with DTZ 1
Qb2
Loss with DTZ 1
Qc2+
Loss with DTZ 1
Qh7
Loss with DTZ 1
Kb4
Loss with DTZ 1
Qxa2
Zeroing
Qxc1+
Zeroing
This is a blessed loss.
Mate can be forced, but a draw can be achieved under the fifty-move rule.
KRRRNvKQ.pgn
lichess.org
Histogram: KRRRN winning vs. KQ (log scale)
Longest KRRRNvKQ phases
KRRRN winning with DTZ 100
KRRRN winning with DTZ 155 (frustrated)
KRRRN losing with DTZ 27
KRRRNvKQ statistics (unique positions)
White wins:
378,096,744,930 (94.2%)
Frustrated white wins:
25,199,094 (0.0%)
Draws:
20,835,328,911 (5.2%)
Black wins:
2,452,383,741 (0.6%)
KRRRNvKQ.json
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