45th Benasque Open 2026 · 2026.07.11 · Elo 2516/2601 · interesting · ★★★
The daily position for Wednesday 30 September 2026. It is still open to solve — the grader reads your whole line, sidelines and evaluation included, before anything here is shown. Cover the solution and solve it first →
Black to move. the model predicts 43% at this level.
31…♖︎g4 — the natural move · the threat is ♖︎xg2+ — what it plays next if the defence does nothing · the white queen cannot flee
32…♕︎e3+ — almost nobody finds this · worth +1 · the fair stop: the line may end here
33…♖︎xg2 — routine — shown for completeness, never demanded
34…♖︎f8 — routine — shown for completeness, never demanded
“hard to find”, “the natural move” and the rest describe how often this move is played by Maia-2, weighted across the 1500/1900/2000 audience the difficulty model is fitted on — a model of human play, not a count of anyone who solved this position.
Members can take this away as a PGN — the diagram, the verified line and their own analysis in one file, for a database, Anki or Chessable.
What happened at the board
Jacobson found it · 0-1
the game ended inside the printed line — full game ↗
The field
100% of the 16 committed lines here found the key move — the model predicted 43% at this level.