The daily position for Monday 7 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 →
White to move. the model predicts 77% at this level.
52.♖︎xd2 — hard to find · the threat is ♔︎xe3 — what it plays next if the defence does nothing
53.♔︎f3 — the natural move
54.♖︎d5 — most players miss this · worth +1
55.♗︎xb5 — the natural move
“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
Wei Yi found it · 1-0
the game went on52…♘︎c453.♖︎d7+♔︎f654.♗︎xb5♘︎e555.♖︎b7♗︎c5+56.♔︎e2♔︎xe657.♗︎d3♔︎f658.♖︎b5… on to move 71 · 1-0full game ↗
The field
85% of the 82 committed lines here found the key move — the model predicted 77% at this level.
Notes from the room
a solver · 2026-09-07
52.♖︎xd2♗︎xd253.e7♔︎f754.e8=♕︎+
a solver · 2026-09-08
on the position · while solvingBlack has a pawn about to promote. White can promote if e7 was not guarded52.♖︎xd2while solvingDeflection