1.
e4
c5
2.
Nf3
g6
3.
d4
Bg7
4.
c3
cxd4
5.
cxd4
d5
6.
e5
Bg4
7.
Nc3
Nc6
8.
Bb5
Bxf3
9.
Qxf3
e6
10.
O-O
Ne7
11.
Bg5
O-O
12.
Bxc6
bxc6
13.
Na4
h6
14.
Bxe7
Qxe7
15.
Qc3
Rab8
16.
Nc5
Rb5
17.
Rac1
Rfb8
18.
b3
Bf8
19.
g3
a5
20.
Qd3
Qa7
21.
Na4
c5
1/2-1/2
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Event
Site
Lincoln
Date
1969.08.13
Round
4
White
Lifson, Ronald A
Black
Tomas, John
Result
1/2-1/2
Score
[Event "US Open-70"] [Site "Lincoln"] [Date "1969.08.13"] [Round "4"] [White "Lifson, Ronald A"] [Black "Tomas, John"] [Result "1/2-1/2"] 1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. c3 cxd4 5. cxd4 d5 6. e5 Bg4 7. Nc3 Nc6 8. Bb5 Bxf3 9. Qxf3 e6 10. O-O Ne7 11. Bg5 O-O 12. Bxc6 bxc6 13. Na4 h6 14. Bxe7 Qxe7 15. Qc3 Rab8 16. Nc5 Rb5 17. Rac1 Rfb8 18. b3 Bf8 19. g3 a5 20. Qd3 Qa7 21. Na4 c5 1/2-1/2