Lesson
White to move. Main line: 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 c5 7. d5 e6 8. Nc3 exd5 9. cxd5 c4 10. Nf3 Bg4 11. Qd4 Bxf3 12. gxf3 Bb4 13. Bxc4 O-O 14. Rg1 g6 15. Bg5 Qc7 16. Bb3 Bc5 17. Qf4 Bxg1 18. d6 Qc8 19. Ke2 Bc5 20. Ne4 N8d7 21. Rc1 Qc6 22. Rxc5 Nxc5 23. Nf6+ Kh8 24. Qh4 Qb5+ 25. Ke3 h5 26. Nxh5 Qxb3+ 27. axb3 Nd5+ 28. Kd4 Ne6+ 29. Kxd5 Nxg5 30. Nf6+ Kg7 31. Qxg5 Rfd8 32. e6 fxe6+ 33. Kxe6 Rf8 34. d7 a5 35. Ng4 Ra6+ 36. Ke5 Rf5+ 37. Qxf5 gxf5 38. d8=Q fxg4 39. Qd7+ Kh6 40. Qxb7 Rg6 41. f4
Bronstein builds a large pawn center and accepts structural damage to open files. The rook sacrifice 22.Rxc5! removes a defender and gives the knight access to f6 with check, keeping Black’s king under constant pressure.
After 26.Nxh5 Qxb3+, White’s king walks through the center while the d-pawn advances. Bronstein gives material back when necessary, then uses 30.Nf6+ and 31.Qxg5 to coordinate queen and passed pawns.
The promotion 38.d8=Q arrives with Black’s pieces unable to create a perpetual check. The game is an excellent calculation exercise because both kings are exposed: the correct move is repeatedly the one that preserves forcing threats, not the one that protects the most material.