the library · reviewed 2026-09-21

Savchenko – Gupta

Odisha Open Cat.A 2026 · 2026.01.23 · Elo 2464/2500 · defensive · ★★★★

The daily position for Saturday 19 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 23 at this level.

The solution

24…♘︎f2+! 25.♔︎c1 ♘︎d3+ 26.♔︎d1 (if 26.♕︎xd3? then 26…♕︎xd3 27.♖︎c3 ♕︎f1+ −+) 26…♘︎b2+ (not 26…♕︎b1+? 27.♗︎c1 ♘︎f2+ 28.♖︎xf2 +−) 27.♔︎c1 ♖︎a8 28.♗︎a5 ♘︎xc4 (not 28…♘︎d3+? 29.♔︎d2 ♘︎c5 30.♕︎d5 ♘︎b7 31.♗︎xc7 ±) ⩱

24…♘︎f2+ — most players miss this
25.♔︎c1 — forced — the only legal move
25…♘︎d3+ — most players miss this · worth +1
26…♘︎b2+ — almost nobody finds this · worth +1
27.♔︎c1 — forced — the only legal move
27…♖︎a8 — hard to find · worth +1 · threatening ♖︎a1#
28…♘︎xc4 — most players miss this · 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

Gupta found it · 1-0

the game went on 29.♖︎e2 ♕︎a3+ 30.♔︎b1 ♕︎b3+ 31.♔︎c1 ♕︎a3+ 32.♔︎b1 ♘︎d6 33.♕︎xc7 h6 34.♕︎c3 ♕︎a4… on to move 67 · 1-0full game ↗

The field

62% of the 13 committed lines here found the key move — the model predicted 4% at this level.

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