Challenge 443 / 1747

Polugaevsky–Spassky: both engines agree, one move

URS-ch26 1959. At move 39 there is exactly one move for White, and both engines agree on it, nothing else comes close. Find it, then beat Boris Spassky from there.

Polugaevsky, Lev – Spassky, Boris V
URS-ch26 1959 · 1-0
You play White
Portrait of Boris Spassky

Boris Spassky

“The Universal Player”
Soviet Era Peak 2690
  • Opponent: Boris Spassky
  • Difficulty: FIDE Master
  • Goal: Beat the personality.
  • Reward: Lev Polugaevsky challenge · URS-ch26 1959. At move 39 there is exactly one move for White, and both engines agree on it, nothing else comes close. Find it, then beat Boris Spassky from there.
Collections
  • The Executioner 0/5
  • Second Chances 0/5
  • Technique 0/5
  • Only Move 0/5
  • The Karpov File 0/3
  • The Tal File 0/3
  • The Fischer File 0/3
  • Across the Board from Kortschnoj 0/3