Syzygy endgame tablebases
White to move
Black to move
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Black is losing with DTZ 108
Nc3+
Loss with DTZ 107
Rb2+
Loss with DTZ 3
Nb2
Loss with DTZ 1
Ne3
Loss with DTZ 1
Nf2
Loss with DTZ 1
Kf8
Loss with DTZ 1
Ra2
Loss with DTZ 1
Rc2
Loss with DTZ 1
Rd2
Loss with DTZ 1
Re2
Loss with DTZ 1
Rf2
Loss with DTZ 1
Rg1
Loss with DTZ 1
Rg3
Loss with DTZ 1
Rg4
Loss with DTZ 1
Rh2
Loss with DTZ 1
Kxd7
Zeroing
Rxg5
Zeroing
This is a blessed loss.
Mate can be forced, but a draw can be achieved under the fifty-move rule.
KRRRvKRN.pgn
lichess.org
Histogram: KRRR winning vs. KRN (log scale)
⋮
Longest KRRRvKRN phases
KRRR winning with DTZ 57
KRRR winning with DTZ 109 (frustrated)
KRRR losing with DTZ 11
KRRRvKRN statistics (unique positions)
White wins:
389,078,673,105 (89.2%)
Frustrated white wins:
1,724,229 (0.0%)
Draws:
46,321,083,918 (10.6%)
Black wins:
674,346,516 (0.2%)
KRRRvKRN.json
(?)