[Event "Chicago op"]
[Site "Chicago"]
[Date "1970.??.??"]
[Round "?"]
[White "Chadwick, Richard"]
[Black "Wirtshafter, Dave"]
[Result "0-1"]
[ECO "B61"]
[PlyCount "56"]
[EventDate "1970.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Bd7 7. Qd2 Rc8 8. 0-0-0 Nxd4 9. Qxd4 Qa5 10. Bd2 a6 11. f4 e5 12. Qd3 Be7 13. fxe5 dxe5 14. Kb1 Qc7 15. Be2 b5 16. Rhf1 b4 17. Nd5 Nxd5 18. Qxd5 Qxc2+ 19. Ka1 Be6 20. Qxe5 Qa4 21. b3 Bxb3 22. Qb2 Bxd1 23. Bxd1 Qb5 24. Rf5 Qxf5 25. exf5 Bf6 26. Ba4+ Kf8 27. Bxb4+ Kg8 28. Qxf6 gxf6 0-1

[Event "Chicago op"]
[Site "Chicago"]
[Date "1970.??.??"]
[Round "?"]
[White "Karklins, Andrew"]
[Black "Wirtshafter, Dave"]
[Result "1-0"]
[ECO "B58"]
[PlyCount "65"]
[EventDate "1970.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be2 e5 7. Nf3 h6 8. Bc4 Be6 9. Qe2 Rc8 10. Bb3 Be7 11. 0-0 0-0 12. Rd1 Qc7 13. Nd5 Bxd5 14. exd5 Na5 15. c3 a6 16. Bc2 Nd7 17. Nd4 Rfe8 18. Nf5 Bf8 19. Nxh6+ gxh6 20. Qg4+ Kh8 21. Rd3 Nf6 22. Qf5 Ng8 23. Rf3 f6 24. Qg6 Qg7 25. Qh5 Qc7 26. Bf5 Rcd8 27. b4 Nc4 28. Qg4 Ne7 29. Be6 Nb6 30. Qh5 Ng6 31. Qxg6 Qg7 32. Qh5 Qh7 33. Bf5 1-0

[Event "Chicago op"]
[Site "Chicago"]
[Date "1970.??.??"]
[Round "?"]
[White "Wirtshafter, Dave"]
[Black "Finegold, Ronald"]
[Result "0-1"]
[ECO "E92"]
[PlyCount "58"]
[EventDate "1970.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Nf3 e5 7. d5 Nh5 8. g3 f5 9. 0-0 Nf6 10. Nd2 f4 11. g4 h5 12. h3 Nh7 13. Kg2 f3+ 14. Bxf3 Qh4 15. Nb3 Na6 16. Be3 Bf6 17. Rh1 Bg5 18. Qe2 Bd7 19. Raf1 Rf7 20. a3 Raf8 21. Nd2 Bf4 22. Qe1 Nc5 23. Bxf4 Nd3 24. Qe3 Nxf4+ 25. Kg1 Nxh3+ 26. Kg2 Rxf3 27. Nxf3 Qxg4+ 28. Kh2 Rxf3 29. Qxa7 Nf4 0-1

[Event "Chicago op"]
[Site "Chicago"]
[Date "1970.??.??"]
[Round "?"]
[White "Wirtshafter, Dave"]
[Black "Smythe, Bill"]
[Result "1-0"]
[ECO "A39"]
[PlyCount "59"]
[EventDate "1970.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. g3 g6 2. Bg2 Bg7 3. c4 c5 4. Nc3 Nc6 5. Nf3 Nf6 6. 0-0 0-0 7. d4 cxd4 8. Nxd4 e5 9. Ndb5 a6 10. Nd6 Ne8 11. Nce4 f5 12. Nxe8 Qxe8 13. Nd6 Qe7 14. Be3 Nd4 15. Nxc8 Raxc8 16. Bxb7 Rb8 17. Bd5+ Kh8 18. b3 g5 19. Bc1 f4 20. e3 Nf5 21. exf4 exf4 22. Rb1 fxg3 23. hxg3 Rb6 24. Qg4 Rg6 25. Bb2 Bxb2 26. Rxb2 Qe5 27. Qe2 Qd4 28. Qd2 Qb6 29. Rbb1 Nxg3 30. Qc3+ 1-0

