The daily position for Friday 25 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 gives this to 1 in 4 at this level.
The solution
62.b4!(not62.♖︎d1?♖︎a7+=)62…♖︎a7+(62…♔︎e7is as good:63.♖︎d3♖︎h864.♖︎d4+−)63.♔︎b3♔︎e7(if63…♖︎b7then64.♔︎c4♔︎e765.♖︎d4+−)64.♖︎d4♖︎a8(64…♔︎e6is as good:65.♖︎d2♖︎c766.♔︎a4+−)65.♔︎c4(not65.b5?♖︎d866.♖︎xd8♔︎xd8=)65…♖︎c8+66.♔︎b5+−
62.b4 — hard to find
63.♔︎b3 — the standard move
64.♖︎d4 — almost nobody finds this · worth +1
65.♔︎c4 — most players miss this · worth +1
66.♔︎b5 — hard to find · worth +1
“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
Gukesh played ♔︎a4 instead · ½-½
in the game62.♔︎a4♖︎a7+63.♔︎b5♖︎b7+64.♔︎c4♖︎c7+65.♔︎b4♖︎b7+66.♔︎a3♖︎a7+67.♔︎b2½-½full game ↗
The field
71% of the 7 committed lines here found the key move — the model predicted 27% at this level.