1.
Nf3
Nf6
2.
c4
g6
3.
Nc3
Bg7
4.
e4
d6
5.
d4
O-O
6.
h3
c5
7.
Be3
Na6
8.
d5
Nc7
9.
Be2
a6
10.
a4
Rb8
11.
a5
b5
12.
axb6
Rxb6
13.
Ra2
Nd7
14.
O-O
Rb8
15.
Qd2
f5
16.
Bh6
fxe4
17.
Nxe4
Nf6
18.
Bxg7
Nxe4
19.
Qe3
Kxg7
20.
Qxe4
e5
21.
dxe6
Bxe6
22.
Rd1
Qf6
23.
Rxd6
Rxb2
24.
Rxb2
Qxb2
25.
Rc6
Rf7
26.
Qe5+
Qxe5
27.
Nxe5
Re7
28.
Rxc5
Bf5
29.
Ra5
Ne6
30.
Nc6
Re8
31.
Rxa6
Nc7
32.
Ra7
Rxe2
33.
Rxc7+
Kh6
34.
c5
Rc2
35.
Nd4
Rc1+
36.
Kh2
Be4
37.
Re7
Bd5
38.
c6
Rc4
39.
c7
Bb7
40.
Ne6
Bc8
41.
Nf8
1-0
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Event
Site
Las Vegas
Date
1973.03.12
Round
1
White
Black
Irwin, Philip R
Result
1-0
Score
[Event "Las Vegas National op"] [Site "Las Vegas"] [Date "1973.03.12"] [Round "1"] [White "Szabo, Laszlo"] [Black "Irwin, Philip R"] [Result "1-0"] 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. h3 c5 7. Be3 Na6 8. d5 Nc7 9. Be2 a6 10. a4 Rb8 11. a5 b5 12. axb6 Rxb6 13. Ra2 Nd7 14. O-O Rb8 15. Qd2 f5 16. Bh6 fxe4 17. Nxe4 Nf6 18. Bxg7 Nxe4 19. Qe3 Kxg7 20. Qxe4 e5 21. dxe6 Bxe6 22. Rd1 Qf6 23. Rxd6 Rxb2 24. Rxb2 Qxb2 25. Rc6 Rf7 26. Qe5+ Qxe5 27. Nxe5 Re7 28. Rxc5 Bf5 29. Ra5 Ne6 30. Nc6 Re8 31. Rxa6 Nc7 32. Ra7 Rxe2 33. Rxc7+ Kh6 34. c5 Rc2 35. Nd4 Rc1+ 36. Kh2 Be4 37. Re7 Bd5 38. c6 Rc4 39. c7 Bb7 40. Ne6 Bc8 41. Nf8 1-0