[Event "Grapevine FOCC VOC op 62nd"]
[Site "Grapevine"]
[Date "2021.10.11"]
[Round "5"]
[White "Mattson, Daniel"]
[Black "Whitt, Anthony"]
[Result "0-1"]
[ECO "B33"]
[BlackElo "1750"]
[PlyCount "86"]
[EventDate "2021.10.09"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 0-0 12. Nc2 Rb8 13. Be2 Bg5 14. 0-0 Ne7 15. Ncb4 Bb7 16. Nxe7+ Qxe7 17. Nd5 Qe6 18. c4 f5 19. exf5 Qxf5 20. f4 exf4 21. Rxf4 Qe5 22. Rxf8+ Rxf8 23. b3 Be3+ 24. Nxe3 Qxe3+ 25. Kh1 Rf2 26. Bf3 Rxf3 27. Qxd6 Qe4 28. Qb8+ Rf8 29. Qg3 bxc4 30. bxc4 Qxc4 31. h3 Qf4 32. Qb3+ Qf7 33. Qg3 Bd5 34. a3 Qf4 35. Qd3 Qf5 36. Qg3 Qg6 37. Qh2 h5 38. h4 Rf2 39. Rg1 Kh7 40. a4 Qf6 41. Qg3 Rf4 42. Qd3+ Be4 43. Qe3 Rxh4+ 0-1

[Event "Grapevine FOCC VOC op 62nd"]
[Site "Grapevine"]
[Date "2021.10.10"]
[Round "3"]
[White "Mattson, Daniel"]
[Black "Unruh, Charles D"]
[Result "0-1"]
[ECO "B09"]
[PlyCount "116"]
[EventDate "2021.10.09"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Bd3 Na6 7. 0-0 c5 8. e5 Ng4 9. Bxa6 cxd4 10. Qxd4 bxa6 11. h3 Nh6 12. Rd1 Bb7 13. Qf2 Bxf3 14. Qxf3 Qb6+ 15. Qf2 dxe5 16. fxe5 Qb7 17. Bxh6 Bxh6 18. Rd3 Bg7 19. b3 Bxe5 20. Rad1 Rac8 21. Nd5 Bd6 22. Kh1 a5 23. c4 a4 24. Qf3 Kg7 25. Qg4 axb3 26. axb3 a5 27. Qd4+ f6 28. Qb6 Qxb6 29. Nxb6 Rc6 30. Na4 Rb8 31. g4 Kf7 32. Re1 Rc7 33. Ree3 Bb4 34. Nc3 Bxc3 35. Rxc3 Rb4 36. Kg2 Rc5 37. Rcd3 Rc7 38. Rd5 a4 39. bxa4 Rxa4 40. Red3 Rcxc4 41. Rd8 Re4 42. Kf3 Re5 43. Rh8 Kg7 44. Re8 Rae4 45. Red8 Re1 46. Kf2 R5e2+ 47. Kg3 Rg1+ 48. Kf3 Re5 49. Kf2 Ra1 50. Rd2 Ra3 51. Kg2 Ree3 52. R8d7 Kf7 53. Rd8 Rg3+ 54. Kf2 Rxh3 55. R8d7 Rh2+ 56. Ke1 Ra1+ 57. Rd1 Rh1+ 58. Ke2 Raxd1 0-1

[Event "Grapevine FOCC VOC op 62nd"]
[Site "Grapevine"]
[Date "2021.10.10"]
[Round "4"]
[White "Shearer, Robert E"]
[Black "Mattson, Daniel"]
[Result "1/2-1/2"]
[ECO "C50"]
[PlyCount "123"]
[EventDate "2021.10.09"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. Nc3 d6 6. d3 Na5 7. Be3 Bxe3 8. fxe3 Nxc4 9. dxc4 Bg4 10. Qe1 Qd7 11. Rd1 Qc6 12. b3 Nxe4 13. Nd5 0-0 14. Ne7+ Kh8 15. Nxc6 bxc6 16. Qh4 Bf5 17. Ng5 Nxg5 18. Qxg5 Bxc2 19. Rd2 f6 20. Rdf2 h6 21. Qh4 Bd3 22. Rd1 Bg6 23. Qg3 Be4 24. Qh4 Bh7 25. Rdf1 Bd3 26. Rxf6 Rxf6 27. Rxf6 gxf6 28. Qxh6+ Kg8 29. h4 Kf7 30. g4 Rg8 31. g5 Rg6 32. Qh7+ Ke6 33. Kf2 fxg5 34. Ke1 gxh4 35. Qxh4 e4 36. Qh3+ Kf6 37. Qh4+ Ke6 38. Qh3+ Kf6 39. Qh8+ Ke6 40. Qe8+ Kf6 41. Qf8+ Ke6 42. Qe8+ Kf6 43. Qd8+ Ke6 44. Kf2 Rf6+ 45. Kg3 Be2 46. Qe8+ Kf5 47. Qd7+ Kg5 48. Qg7+ Rg6 49. Qe7+ Kf5+ 50. Kf2 Bf3 51. Qf7+ Kg5 52. Qf4+ Kh5 53. Qh2+ Kg5 54. Qg3+ Kf6 55. Qh4+ Ke6 56. Qh3+ Kf6 57. Qh8+ Ke6 58. Qe8+ Kf6 59. Qf8+ Ke6 60. Qe8+ Kf6 61. Qf8+ Ke6 62. Qe8+ 1/2-1/2

[Event "Grapevine FOCC VOC op 62nd"]
[Site "Grapevine"]
[Date "2021.10.09"]
[Round "2"]
[White "Mattson, Daniel"]
[Black "Begin, Adam"]
[Result "1-0"]
[ECO "B09"]
[PlyCount "79"]
[EventDate "2021.10.09"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 c6 5. Nf3 Bg7 6. Bd3 0-0 7. 0-0 Qc7 8. Qe1 Ne8 9. e5 f6 10. Qg3 Be6 11. Be3 d5 12. Nh4 f5 13. Nf3 Bf7 14. Qh3 e6 15. Nb1 Qe7 16. Nbd2 h6 17. Nb3 Nc7 18. Bd2 Nd7 19. Na5 c5 20. dxc5 Nxc5 21. Bb4 b6 22. Nb7 Nb5 23. Bxb5 Qxb7 24. Nd4 a5 25. Bc6 Qb8 26. Bxa8 axb4 27. Bc6 Qc7 28. Bb5 Ne4 29. Qe3 Qc5 30. Bd3 g5 31. g3 Bxe5 32. fxe5 f4 33. gxf4 Bg6 34. fxg5 Rxf1+ 35. Rxf1 hxg5 36. h3 Bf5 37. Nxf5 Qxe3+ 38. Nxe3 Kg7 39. Bxe4 dxe4 40. Rf6 1-0

[Event "Grapevine FOCC VOC op 62nd"]
[Site "Grapevine"]
[Date "2021.10.09"]
[Round "1"]
[White "Rex, Tobiahs"]
[Black "Mattson, Daniel"]
[Result "0-1"]
[ECO "A22"]
[WhiteElo "1297"]
[PlyCount "68"]
[EventDate "2021.10.09"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e5 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. e3 Nc6 7. Nge2 Be7 8. 0-0 0-0 9. f4 Rb8 10. fxe5 Nxe5 11. d4 Nec4 12. b3 Nd6 13. Qd3 c6 14. e4 Bg4 15. Bf4 Rc8 16. h3 Bh5 17. e5 Bg6 18. Qd2 Ne8 19. Be4 Bxe4 20. Nxe4 Nd5 21. a3 Qd7 22. g4 Nec7 23. Nc5 Bxc5 24. dxc5 Ne6 25. b4 Rcd8 26. Rad1 Qe7 27. Qe1 Rd7 28. Bd2 Rfd8 29. Ng3 Qh4 30. Nf5 Qxh3 31. Nd6 Qxg4+ 32. Kh2 Ndf4 33. Bxf4 Nxf4 34. Rd4 Qg2# 0-1

