1.
e4
c5
2.
Nf3
e6
3.
d4
cxd4
4.
c3
dxc3
5.
Nxc3
d6
6.
Bc4
a6
7.
O-O
Be7
8.
Qe2
b5
9.
Bb3
Nf6
10.
Rd1
Qb6
11.
e5
dxe5
12.
Nxe5
Nbd7
13.
Be3
Qb7
14.
Bf4
Nxe5
15.
Bxe5
O-O
16.
Bc2
Qb6
17.
Bd4
Qb7
18.
Bxf6
Bxf6
19.
Be4
Qa7
20.
Bxa8
Qxa8
21.
f3
Bb7
22.
Ne4
Qa7+
23.
Kh1
Bd4
24.
Rac1
Bd5
25.
b3
Qb6
26.
Qd3
Be5
27.
Nd2
Qf2
28.
Rc2
Qh4
29.
Nf1
h5
30.
Qe2
Qg5
1/2-1/2
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Event
Site
Las Vegas
Date
1974.03.20
Round
5
White
Jacobs, John N
Black
Grefe, John Alan
Result
1/2-1/2
Score
[Event "Las Vegas National op"] [Site "Las Vegas"] [Date "1974.03.20"] [Round "5"] [White "Jacobs, John N"] [Black "Grefe, John Alan"] [Result "1/2-1/2"] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. c3 dxc3 5. Nxc3 d6 6. Bc4 a6 7. O-O Be7 8. Qe2 b5 9. Bb3 Nf6 10. Rd1 Qb6 11. e5 dxe5 12. Nxe5 Nbd7 13. Be3 Qb7 14. Bf4 Nxe5 15. Bxe5 O-O 16. Bc2 Qb6 17. Bd4 Qb7 18. Bxf6 Bxf6 19. Be4 Qa7 20. Bxa8 Qxa8 21. f3 Bb7 22. Ne4 Qa7+ 23. Kh1 Bd4 24. Rac1 Bd5 25. b3 Qb6 26. Qd3 Be5 27. Nd2 Qf2 28. Rc2 Qh4 29. Nf1 h5 30. Qe2 Qg5 1/2-1/2