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Syzygy endgame tablebases

White is winning with DTZ 1

KQRRvKQ.pgn lichess.org

Histogram: KQRR winning vs. KQ (log scale)

Longest KQRRvKQ phases

KQRRvKQ statistics

5,931,284,019 (90.5%)
9,022 (0.0%)
556,533,096 (8.5%)
63,650,763 (1.0%)
KQRRvKQ.json (?)