Syzygy endgame tablebases

Tablebase draw

KQQBvKQB.pgn lichess.org

Histogram: KQQB winning vs. KQB (log scale)

Longest KQQBvKQB phases

KQQBvKQB statistics (unique positions)

White wins:
268,483,714,854 (77.6%)
Frustrated white wins:
18,124 (0.0%)
Draws:
71,403,288,169 (20.6%)
Black wins:
6,266,600,605 (1.8%)
KQQBvKQB.json (?)