Syzygy endgame tablebases

Black is winning with DTZ 68

KQBBvKQB.pgn lichess.org

Histogram: KQBB losing vs. KQB (log scale)

Longest KQBBvKQB phases

KQBBvKQB statistics

175,007,790,234 (45.1%)
93,584,766 (0.0%)
140,753,993,791 (36.2%)
567,262,676 (0.1%)
71,918,655,023 (18.5%)
KQBBvKQB.json (?)