[Event "1959 Idaho Open"] [Site "Boise, ID"] [Date "1959.05.30"] [Round "1"] [White "Dolph, Phil"] [Black "Chappuis, Gaston"] [Result "1/2-1/2"] [ECO "D85"] [Opening "Gruenfeld: Exchange, 5.e4"] 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Ba3 Nd7 8. Nf3 O-O 9. Qc2 c5 10. dxc5 Qc7 11. Be2 Nxc5 12. O-O Bd7 13. Rac1 Rfd8 14. Nd4 Rac8 15. Nb3 Nxb3 16. axb3 Bc6 17. Kh1 e6 18. f4 b6 19. Ba6 Bb7 20. Bxb7 Qxb7 21. c4 Rd4 22. e5 Rcd8 23. Bd6 Bf8 24. Rcd1 Rxd1 25. Rxd1 Qd7 26. b4 Qc6 27. c5 bxc5 28. bxc5 Rc8 29. Rc1 Bh6 30. Qc4 a6 31. Rb1 g5 32. fxg5 Bf8 33. Ra1 Bxd6 34. exd6 Qxd6 35. cxd6 Rxc4 36. h4 Rxh4+ 37. Kg1 Rd4 38. Rxa6 Kg7 39. Kf2 f6 40. Ra7+ Kg6 41. gxf6 Rxd6 42. f7 Kg7 43. Ke3 h6 44. Ke4 Rd5 45. Re7 Rf5 46. f8=Q+ Kxf8 47. Rxe6 Rg5 {#d} 1/2-1/2