1.
e4
c5
2.
Nf3
d6
3.
d4
cxd4
4.
Nxd4
Nf6
5.
Nc3
a6
6.
a4
Nc6
7.
Nb3
b6
8.
Be3
e6
9.
g4
h6
10.
Qe2
Nd7
11.
Bg2
g5
12.
O-O-O
Nce5
13.
h4
Rg8
14.
hxg5
hxg5
15.
Rh5
Bg7
16.
Rdh1
Bf6
17.
f4
gxf4
18.
Bxf4
Bb7
19.
Kb1
Qe7
20.
Rd1
O-O-O
21.
g5
Bg7
22.
Bh3
Rh8
23.
Rxh8
Rxh8
24.
Bf1
Nc5
25.
Nd2
Ng6
26.
Bg3
Bxc3
27.
bxc3
e5
28.
Be1
Kb8
29.
Qc4
Qc7
30.
Ka1
a5
31.
Bf2
Ba6
32.
Qa2
Rh1
33.
Rb1
Bxf1
34.
Nxf1
Nxe4
35.
Bxb6
Qxc3+
36.
Qb2
Qxb2+
37.
Kxb2
Nxg5
38.
Ne3
Rxb1+
39.
Kxb1
Kb7
40.
Bxa5
Kc6
41.
c4
Ne6
42.
Bb4
Ne7
43.
a5
f5
44.
a6
f4
45.
a7
Nc7
46.
Ng4
Nc8
47.
c5
e4
48.
cxd6
Nxd6
49.
Bd2
f3
50.
Bf4
Ndb5
51.
Kc2
Nxa7
52.
Bxc7
Kxc7
53.
Kd2
Nb5
54.
Ke3
Nc3
55.
Nh2
Kc6
56.
Nxf3
Kd5
1/2-1/2
Opening Explorer
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Event
Site
New York
Date
1977.12.16
Round
12
White
Watson, John L
Black
Diesen, Mark C
Result
1/2-1/2
BlackElo
2360
[Event "New York GHI"] [Site "New York"] [Date "1977.12.16"] [Round "12"] [White "Watson, John L"] [Black "Diesen, Mark C"] [Result "1/2-1/2"] [BlackElo "2360"] [ECO "B90"] [Opening "Sicilian Defense: Najdorf Variation"] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. a4 Nc6 7. Nb3 b6 8. Be3 e6 9. g4 h6 10. Qe2 Nd7 11. Bg2 g5 12. O-O-O Nce5 13. h4 Rg8 14. hxg5 hxg5 15. Rh5 Bg7 16. Rdh1 Bf6 17. f4 gxf4 18. Bxf4 Bb7 19. Kb1 Qe7 20. Rd1 O-O-O 21. g5 Bg7 22. Bh3 Rh8 23. Rxh8 Rxh8 24. Bf1 Nc5 25. Nd2 Ng6 26. Bg3 Bxc3 27. bxc3 e5 28. Be1 Kb8 29. Qc4 Qc7 30. Ka1 a5 31. Bf2 Ba6 32. Qa2 Rh1 33. Rb1 Bxf1 34. Nxf1 Nxe4 35. Bxb6 Qxc3+ 36. Qb2 Qxb2+ 37. Kxb2 Nxg5 38. Ne3 Rxb1+ 39. Kxb1 Kb7 40. Bxa5 Kc6 41. c4 Ne6 42. Bb4 Ne7 43. a5 f5 44. a6 f4 45. a7 Nc7 46. Ng4 Nc8 47. c5 e4 48. cxd6 Nxd6 49. Bd2 f3 50. Bf4 Ndb5 51. Kc2 Nxa7 52. Bxc7 Kxc7 53. Kd2 Nb5 54. Ke3 Nc3 55. Nh2 Kc6 56. Nxf3 Kd5 1/2-1/2