1.
Nf3
d5
2.
g3
Nf6
3.
Bg2
Bf5
4.
O-O
e6
5.
b3
Nbd7
6.
Bb2
h6
7.
d3
Bc5
8.
e3
O-O
9.
Nbd2
Qe7
10.
Qe2
Rfd8
11.
Rad1
a5
12.
e4
dxe4
13.
dxe4
Bh7
14.
e5
Ne8
15.
Ne4
Ba3
16.
Ba1
Nc5
17.
Nd4
Nxe4
18.
Bxe4
Bxe4
19.
Qxe4
c6
20.
f4
Bc5
21.
Kg2
Bxd4
22.
Bxd4
Nc7
23.
Bb6
Rxd1
24.
Rxd1
Nd5
25.
Qd4
Qa3
26.
Rd2
Qb4
27.
Bc5
Qxd4
28.
Bxd4
Kf8
29.
c4
Ne7
30.
Bb6
Ke8
31.
a4
h5
32.
h3
Ng6
33.
Kf3
Nf8
34.
g4
Nd7
35.
Be3
hxg4+
36.
hxg4
c5
37.
Ke4
Ke7
38.
Rh2
g6
39.
Bd2
b6
40.
Be1
f5+
41.
Kf3
Rf8
42.
Bh4+
Ke8
43.
Rd2
Rh8
44.
Kg3
g5
45.
Bxg5
fxg4
46.
Kxg4
Rh1
47.
Rd6
Rb1
48.
Rxe6+
Kf8
49.
Rd6
Nxe5+
50.
fxe5
Rxb3
51.
e6
1-0
Opening Explorer
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Site
Dresden
Date
1969.08.11
Round
4(3)
White
Halfdanarson, Jon
Black
Acosta, Mariano
Result
1-0
[Event "WchT Students 16th final B"] [Site "Dresden"] [Date "1969.08.11"] [Round "4(3)"] [White "Halfdanarson, Jon"] [Black "Acosta, Mariano"] [Result "1-0"] 1. Nf3 d5 2. g3 Nf6 3. Bg2 Bf5 4. O-O e6 5. b3 Nbd7 6. Bb2 h6 7. d3 Bc5 8. e3 O-O 9. Nbd2 Qe7 10. Qe2 Rfd8 11. Rad1 a5 12. e4 dxe4 13. dxe4 Bh7 14. e5 Ne8 15. Ne4 Ba3 16. Ba1 Nc5 17. Nd4 Nxe4 18. Bxe4 Bxe4 19. Qxe4 c6 20. f4 Bc5 21. Kg2 Bxd4 22. Bxd4 Nc7 23. Bb6 Rxd1 24. Rxd1 Nd5 25. Qd4 Qa3 26. Rd2 Qb4 27. Bc5 Qxd4 28. Bxd4 Kf8 29. c4 Ne7 30. Bb6 Ke8 31. a4 h5 32. h3 Ng6 33. Kf3 Nf8 34. g4 Nd7 35. Be3 hxg4+ 36. hxg4 c5 37. Ke4 Ke7 38. Rh2 g6 39. Bd2 b6 40. Be1 f5+ 41. Kf3 Rf8 42. Bh4+ Ke8 43. Rd2 Rh8 44. Kg3 g5 45. Bxg5 fxg4 46. Kxg4 Rh1 47. Rd6 Rb1 48. Rxe6+ Kf8 49. Rd6 Nxe5+ 50. fxe5 Rxb3 51. e6 1-0