The daily position for Thursday 24 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 36% at this level.
The solution
53…♖︎c8+!(not53…exd4?54.♖︎xd4+♔︎e555.♖︎xd5+♔︎e656.♖︎d6++−)54.♔︎d6♖︎b8(not54…exd4?55.♖︎xd4+♔︎f356.♖︎f4+♔︎e257.♔︎xd5+−)55.♖︎b2(55.dxe5is as good:55…fxe5=)55…exd456.b5(56.exd4is as good:56…♔︎xd4=)56…dxe357.fxe3♔︎f3=
53…♖︎c8+ — hard to find
54…♖︎b8 — most players miss this · worth +1
55…exd4 — the standard move
56…dxe3 — the natural move · the fair stop: the line may end here
57…♔︎f3 — 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
Martinez Alcantara found it · ½-½
the game went on55.♔︎c5♖︎c8+56.♔︎b6♖︎b8+57.♔︎a5♖︎a8+58.♔︎b5♖︎b8+59.♔︎a4♖︎a8+60.♔︎b3♖︎b861.♔︎a4½-½full game ↗
The field
67% of the 9 committed lines here found the key move — the model predicted 36% at this level.