the library · reviewed 2026-09-28

Nozdrachev – Hakobyan

Andranik Margaryan Mem GM · 2026.01.14 · Elo 2514/2427 · tactic · ★

The daily position for Monday 21 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 70% at this level.

The solution

74.♖︎d2+! (not 74.♕︎e2+? ♖︎f2 75.♕︎b5 ♕︎xb5 76.♖︎xb5 ♖︎xc2+ −+) 74…♖︎f2 75.♖︎xf2+ (not 75.♕︎g7+? ♔︎f1 76.♖︎xf2+ ♔︎xf2 77.♕︎d4+ ♔︎e2 ∓) 75…♔︎xf2 76.♕︎xf5+ ♔︎g2 77.♕︎g4+ ♔︎h2 78.♕︎f4+ +−

74.♖︎d2+ — the natural move
75.♖︎xf2+ — most players miss this · worth +1
76.♕︎xf5+ — the natural move
77.♕︎g4+ — the natural move
78.♕︎f4+ — 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

Nozdrachev found it · 1-0

the game went on 76…♔︎g3 77.♕︎g5+ ♔︎f3 78.a7 h2 79.♕︎h4 ♔︎g2 80.♕︎h8 h1=♕︎ 81.a8=♕︎ ♕︎xh8+ 82.♕︎xh8 ♔︎f2 83.♕︎d4+1-0full game ↗

The field

95% of the 19 committed lines here found the key move — the model predicted 70% at this level.

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