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the library · reviewed 2026-08-24

Eljanov – Mesropov

TCh-ISR GpA 2026 · 2026.01.31 · Elo 2649/2458 · defensive · ★
The daily position for Monday 17 August 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 →
. r . q . . k .
. . p . . r p .
. . . . . . R p
. . . . . . . P
p n . P . p . .
. . . . B . . .
P P . . Q P P .
. . R . . . K .
White to move. the model predicts 62% at this level.

The solution

29.♗︎d2! △♗︎xb4 (not 29.♕︎c4? fxe3 30.fxe3 ♘︎d5 31.♖︎e6 ♖︎xb2 −+) 29…♘︎d5 (29…♕︎d7 is more resilient: 30.♖︎e6 ♘︎d5 31.♖︎c5 ⩲) 30.♖︎c2 ♕︎d7 (30…♕︎h4 is more resilient: 31.♖︎c5 f3 32.gxf3 =) 31.♕︎e6 ♕︎xe6 32.♖︎xe6 ⩲

“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

Eljanov found it · 1-0

the game went on 30…♘︎e7 31.♖︎g4 ♘︎d5 32.♕︎e6 ♖︎b6 33.♖︎c6 ♖︎xb2 34.♖︎xg7+1-0full game ↗

The field

50% of the 8 committed lines here found the key move — the model predicted 62% at this level.

Notes from the room

29.♗︎d2 ! [29.♗︎xf4 ♖︎xf4 30.♖︎xg7+ (30.♕︎e6+ ♖︎f7 31.♖︎xg7+ ♔︎xg7 32.♕︎g6+ ♔︎f8 −+) 30…♔︎xg7 31.♕︎e5+ ♖︎f6 32.♖︎xc7+ ♔︎f8 ∓] 29…♘︎xa2 30.♖︎c4 ♖︎xb2 31.♖︎e6 ±
29.♗︎d2 [29.♗︎xf4 ? ♖︎xf4 (29…♕︎xd4 30.♗︎e5)] 29…♘︎d5 = while solvingNot really sure if this does anything.
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