The daily position for Friday 18 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 gives this to 1 in 4 at this level.
68…♔︎a8 — almost nobody finds this · worth +1 · the fair stop: the line may end here
69…♔︎a7 — 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
Suyarov found it · ½-½
the game went on70.♖︎d7+♔︎a871.♖︎d8+♔︎a772.♖︎d7+½-½full game ↗
The field
86% of the 14 committed lines here found the key move — the model predicted 22% at this level.