![](https://www.hugochess.com/assets/img/canada.png)
[Event "Nwc 1980.03"]
[Site "Vancouver CAN"]
[Date "1980.??.??"]
[White "Haessler, Carl"]
[Black "Donaldson, John"]
[Result "0-1"]
[PlyCount "56"]
1.b4 c6 2.Bb2 a5 3.a3 axb4 4.axb4 Rxa1 5.Bxa1 Qb6 6.c3 d5 7.Nf3 Nf6 8.e3 Bf5 9.d4 e6 10.Nbd2 Bd6 11.Be2 Nbd7 12.Nh4 O-O 13.g4 Be4 14.f3 Bg6 15.g5 Ne8 16.Nxg6 hxg6 17.f4 Nc7 18.Bd3 Ra8 19.h4 e5 20.Nb3 exf4 21.Qg4 Ne5 22.dxe5 Qxe3+ 23.Qe2 Qg3+ 24.Kd2 Bxe5 25.Rf1 Ra2+ 26.Bc2 Nb5 27.Qxe5 Qg2+ 28.Ke1 Qxc2 0-1
[Site "Vancouver CAN"]
[Date "1980.??.??"]
[White "Haessler, Carl"]
[Black "Donaldson, John"]
[Result "0-1"]
[PlyCount "56"]
1.b4 c6 2.Bb2 a5 3.a3 axb4 4.axb4 Rxa1 5.Bxa1 Qb6 6.c3 d5 7.Nf3 Nf6 8.e3 Bf5 9.d4 e6 10.Nbd2 Bd6 11.Be2 Nbd7 12.Nh4 O-O 13.g4 Be4 14.f3 Bg6 15.g5 Ne8 16.Nxg6 hxg6 17.f4 Nc7 18.Bd3 Ra8 19.h4 e5 20.Nb3 exf4 21.Qg4 Ne5 22.dxe5 Qxe3+ 23.Qe2 Qg3+ 24.Kd2 Bxe5 25.Rf1 Ra2+ 26.Bc2 Nb5 27.Qxe5 Qg2+ 28.Ke1 Qxc2 0-1
[Event "NWC 1980.03"]
[Site "Vancouver CAN"]
[Date "1980.??.??"]
[Round "?"]
[White "Haessler, Carl"]
[Black "Donaldson, John"]
[Result "0-1"]
[ECO "A00"]
[EventDate "1980.03.??"]
[PlyCount "56"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "CAN"]
1. b4 c6 2. Bb2 a5 3. a3 axb4 4. axb4 Rxa1 5. Bxa1 Qb6 6. c3 d5 7. Nf3 Nf6
8. e3 Bf5 9. d4 e6 10. Nbd2 Bd6 11. Be2 Nbd7 12. Nh4 O-O 13. g4 Be4 14. f3
Bg6 15. g5 Ne8 16. Nxg6 hxg6 17. f4 Nc7 18. Bd3 Ra8 19. h4 e5 20. Nb3 exf4
21. Qg4 Ne5 22. dxe5 Qxe3+ 23. Qe2 Qg3+ 24. Kd2 Bxe5 25. Rf1 Ra2+ 26. Bc2
Nb5 27. Qxe5 Qg2+ 28. Ke1 Qxc2 0-1