Syzygy endgame tablebases
White to move
Black to move
JavaScript required for interactive board view.
Black is losing with DTZ 62
Rf1+
Loss with DTZ 61
Rg2+
Loss with DTZ 41
Rb2
Loss with DTZ 1
Rc2
Loss with DTZ 1
Rd2
Loss with DTZ 1
Re2
Loss with DTZ 1
Rf3
Loss with DTZ 1
Rf4
Loss with DTZ 1
Rf5
Loss with DTZ 1
Rf6
Loss with DTZ 1
Rh2
Loss with DTZ 1
Rxa2
Zeroing
Rxf7
Zeroing
KQQRNvKR.pgn
lichess.org
Histogram: KQQRN winning vs. KR (log scale)
Longest KQQRNvKR phases
KQQRN winning with DTZ 62
KQQRN losing with DTZ 3
KQQRNvKR statistics (unique positions)
White wins:
398,063,604,908 (99.9%)
Draws:
207,956,862 (0.1%)
Black wins:
129,491,126 (0.0%)
KQQRNvKR.json
(?)