1.
Nf3
g6
2.
c4
Bg7
3.
d4
d6
4.
e4
Nd7
5.
Nc3
e5
6.
d5
Ne7
7.
Be2
O-O
8.
O-O
f5
9.
Nd2
Nf6
10.
Bf3
f4
11.
g4
g5
12.
h3
h5
13.
Kh2
Qd7
14.
Rg1
Kf7
15.
Rg2
Ng6
16.
gxh5
Qxh3+
17.
Kg1
Nh4
18.
Rxg5
Bh6
19.
Bg2
Qd7
20.
Rg6
Nxg6
21.
hxg6+
Kxg6
22.
Nf3
Qg4
23.
Qd3
Kh7
24.
Bd2
Rg8
25.
Ne1
f3
26.
Bxh6
fxg2
27.
Bd2
Qh5
0-1
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Event
Site
Las Vegas
Date
1974.03.18
Round
2
White
Koelsche, Giles A
Black
Lengyel, Levente
Result
0-1
Score
[Event "Las Vegas National op"] [Site "Las Vegas"] [Date "1974.03.18"] [Round "2"] [White "Koelsche, Giles A"] [Black "Lengyel, Levente"] [Result "0-1"] 1. Nf3 g6 2. c4 Bg7 3. d4 d6 4. e4 Nd7 5. Nc3 e5 6. d5 Ne7 7. Be2 O-O 8. O-O f5 9. Nd2 Nf6 10. Bf3 f4 11. g4 g5 12. h3 h5 13. Kh2 Qd7 14. Rg1 Kf7 15. Rg2 Ng6 16. gxh5 Qxh3+ 17. Kg1 Nh4 18. Rxg5 Bh6 19. Bg2 Qd7 20. Rg6 Nxg6 21. hxg6+ Kxg6 22. Nf3 Qg4 23. Qd3 Kh7 24. Bd2 Rg8 25. Ne1 f3 26. Bxh6 fxg2 27. Bd2 Qh5 0-1