1.
d4
Nf6
2.
c4
g6
3.
Nc3
d5
4.
Nf3
Bg7
5.
Qb3
dxc4
6.
Qxc4
O-O
7.
e4
a6
8.
Qb3
b5
9.
e5
Nfd7
10.
Be3
Nb6
11.
a4
Be6
12.
Qd1
c5
13.
axb5
cxd4
14.
Qxd4
axb5
15.
Rxa8
Nxa8
16.
Bxb5
Nc7
17.
Ba4
Nba6
18.
Qh4
Qb8
19.
O-O
Qxb2
1/2-1/2
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Event
Site
Budapest
Date
1971.10.21
Round
5
White
Black
Vadasz, Laszlo
Result
1/2-1/2
[Event "HUN-ch27"] [Site "Budapest"] [Date "1971.10.21"] [Round "5"] [White "Portisch, Lajos"] [Black "Vadasz, Laszlo"] [Result "1/2-1/2"] 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 a6 8. Qb3 b5 9. e5 Nfd7 10. Be3 Nb6 11. a4 Be6 12. Qd1 c5 13. axb5 cxd4 14. Qxd4 axb5 15. Rxa8 Nxa8 16. Bxb5 Nc7 17. Ba4 Nba6 18. Qh4 Qb8 19. O-O Qxb2 1/2-1/2