| ECO A04 in 2003 play it! schebler gerhard defeats black's knoppert erik gj in 129 moves | 1. Nf3 c5 2. c4 Nc6 3. Nc3 Nf6 4. g3 d5 5. d4 cxd4 6. Nxd4 dxc4 7. Nxc6 Qxd1+ 8. Nxd1 bxc6 9. Bg2 Nd5 10. Ne3 e6 11. Nxc4 Ba6 12. Na5 Bb4+ 13. Bd2 Bxd2+ 14. Kxd2 Rb8 15. Rab1 Kd7 16. Rhc1 Rb6 17. Nb3 Kc7 18. Nc5 Rd8 19. Ke1 Bc8 20. Rc4 e5 21. Rbc1 f6 22. Na4 Ra6 23. a3 Ne7 24. Nc5 Rb6 25. b4 Rd6 26. Ne4 Rd8 27. Nc5 Rd6 28. Rh4 h6 29. Rhc4 Be6 30. R4c2 Bc8 31. Nb3 Be6 32. Na5 Kd7 33. Rc5 Bd5 34. Bxd5 Rxd5 35. Nb3 f5 36. R5c4 e4 37. f3 exf3 38. exf3 g5 39. Kf2 Ng6 40. Rd4 Ne5 41. Rcd1 Rb5 42. Nc5+ Kd6 43. Rxd5+ cxd5 44. Na4 d4 45. Nc3 Rb8 46. Rxd4+ Ke6 47. Na4 Nd7 48. Rc4 Kd6 49. Nc3 Ne5 50. Rd4+ Ke6 51. Na4 Nd7 52. Rc4 Kd6 53. Nc5 Nb6 54. Rd4+ Nd5 55. Ke2 Re8+ 56. Kd2 Kc6 57. g4 Ne3 58. gxf5 Nf1+ 59. Kc3 Nxh2 60. Kc4 Nxf3 61. b5+ Kc7 62. Rd7+ Kb8 63. Rb7+ Ka8 64. f6 Rf8 65. Re7 |
| ECO A07 in 2000 play it! schebler gerhard defeats black's vanderstricht ge in 75 moves | 1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. O-O Nd7 5. d4 e6 6. Nbd2 Ngf6 7. Re1 Be7 8. e4 dxe4 9. Nxe4 O-O 10. c3 Qb6 11. Qb3 Nxe4 12. Rxe4 Bh5 13. Re1 Rfe8 14. Nd2 Bg6 15. Nc4 Qa6 16. Bf4 Bc2 17. Qxc2 Qxc4 18. a4 a5 19. h4 Bf6 20. Be3 e5 21. b3 Qe6 22. dxe5 Qxe5 23. Red1 Nc5 24. Rac1 Rad8 25. b4 axb4 26. cxb4 Ne6 27. Qc4 Nd4 28. a5 g6 29. Rd2 Ne6 30. Rcd1 Rxd2 31. Rxd2 Qc3 32. Rc2 Qa1+ 33. Kh2 Rd8 34. Ra2 Qc3 35. Qxc3 Bxc3 36. b5 cxb5 37. Bxb7 b4 38. a6 |
| ECO A04 in 2007 play it! schebler gerhard defeats black's ruck robert hun in 119 moves | 1. Nf3 g6 2. e4 c6 3. c4 Bg7 4. Nc3 Nf6 5. d4 O-O 6. Be2 d5 7. e5 Ne4 8. O-O Nxc3 9. bxc3 b6 10. Be3 Ba6 11. Nd2 e6 12. f4 Qe7 13. a4 Nd7 14. cxd5 Bxe2 15. d6 Bxd1 16. dxe7 Rfe8 17. Rfxd1 Rxe7 18. c4 Nf8 19. Ne4 Rc7 20. g4 Rb8 21. Rab1 Nd7 22. g5 Bf8 23. Rd2 a6 24. Rdb2 Rcb7 25. Nc3 h5 26. Kf1 Be7 27. Ke2 Kf8 28. Rb3 Bd8 29. Bc1 Be7 30. Ba3 Bxa3 31. Rxa3 b5 32. axb5 axb5 33. c5 Ke7 34. Na2 Rd8 35. Nb4 Nb8 36. Ke3 Kd7 37. Ra8 Kc7 38. Rba1 Rd7 39. R1a6 Rd8 40. Rxb8 Rdxb8 41. Rxc6+ Kd8 42. Ra6 Ke8 43. d5 exd5 44. c6 Rc7 45. Kd4 Rd8 46. Nxd5 b4 47. Kc5 Rcc8 48. Rb6 Rb8 49. c7 Rbc8 50. Nf6+ Ke7 51. Kc6 Rd2 52. Kb7 Rxc7+ 53. Kxc7 Rc2+ 54. Kb7 Rxh2 55. Nd5+ Kd7 56. f5 gxf5 57. g6 fxg6 58. e6+ Ke8 59. Rc6 Kf8 60. e7+ |
| ECO A05 in 2001 play it! schebler gerhard defeats black's ciolac gheorghe in 67 moves | 1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. d4 dxc4 7. Qc2 a6 8. a4 Bd7 9. Qxc4 Bc6 10. Bg5 Bd5 11. Qc1 h6 12. Bf4 Nc6 13. Nbd2 g5 14. Be3 Ng4 15. Nc4 Nxe3 16. fxe3 g4 17. Nfe5 Bxg2 18. Kxg2 Qd5+ 19. Kg1 h5 20. Qc3 Bg5 21. a5 Nxe5 22. Nxe5 Rad8 23. Ra3 Qe4 24. b4 f6 25. Nc4 Rd7 26. Nd2 Qd5 27. Qd3 Rg7 28. Ne4 Bh6 29. Nc5 Re7 30. e4 Qg5 31. d5 exd5 32. exd5 Qe3+ 33. Rf2 Qxd3 34. Rxd3 |
| ECO A04 in 1998 play it! schebler gerhard defeats black's knoppert erik g in 59 moves | 1. Nf3 g6 2. e4 Bg7 3. d4 c6 4. Nc3 d5 5. h3 dxe4 6. Nxe4 Nd7 7. Bc4 Ngf6 8. Nxf6+ Nxf6 9. Bf4 O-O 10. O-O Nd5 11. Be5 a5 12. Re1 Nb6 13. Bf1 Be6 14. Bxg7 Kxg7 15. Qe2 h6 16. b3 Qc7 17. c4 a4 18. Rac1 axb3 19. axb3 Rae8 20. Rc3 Bc8 21. Re3 e6 22. Qb2 f6 23. Bd3 c5 24. dxc5 Qxc5 25. Nh4 g5 26. Nf5+ Kh8 27. Qe2 e5 28. Qh5 Bxf5 29. Qxh6+ Kg8 30. Bxf5 |
| ECO A05 in 2000 play it! schebler gerhard defeats black's braslavskij alex in 75 moves | 1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 O-O 5. Bg2 c5 6. c4 Nc6 7. O-O d6 8. d4 cxd4 9. Nxd4 Bd7 10. Nc3 Qc8 11. Rc1 Bh3 12. Nd5 Bxg2 13. Kxg2 Qd7 14. Nxc6 Qxc6 15. e4 Nxd5 16. exd5 Qc5 17. Bxg7 Kxg7 18. Qd2 a5 19. h4 Rae8 20. h5 e5 21. Rh1 Qd4 22. Qxd4 exd4 23. h6+ Kf6 24. Kf3 d3 25. Rhd1 Re2 26. a4 Rfe8 27. Rxd3 b6 28. b4 Ra2 29. bxa5 bxa5 30. c5 dxc5 31. Rxc5 Rxa4 32. Rc6+ Ke5 33. Rc7 Rf8 34. Ra7 Ra1 35. d6 Ke6 36. Kg4 Ra4+ 37. f4 Ra1 38. Kg5 |
| ECO A05 in 1997 play it! schebler gerhard defeats black's kedziora claus in 135 moves | 1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. Be3 Ng4 8. Bg5 f6 9. Bh4 h5 10. h3 Nh6 11. dxe5 dxe5 12. Qxd8 Rxd8 13. Nd5 g5 14. Bg3 Na6 15. Nd2 h4 16. Bh2 Kf8 17. O-O-O c6 18. Nc3 Nc5 19. Nb3 Rxd1+ 20. Rxd1 Ne6 21. f3 Ke8 22. Bg1 Bf8 23. Bf1 Nf7 24. a4 Nfd8 25. a5 Nc7 26. Na4 Nde6 27. Nbc5 Nxc5 28. Nxc5 Ne6 29. Nd3 c5 30. Kd2 Kd7 31. Kc3 Kc7 32. Ra1 Rb8 33. Nf2 Be7 34. Nd1 Bd8 35. Ne3 b6 36. Nd5+ Kb7 37. a6+ Kc6 38. b4 Nc7 39. Rb1 Ra8 40. Rd1 Bxa6 41. b5+ Nxb5+ 42. cxb5+ Bxb5 43. Bxb5+ Kxb5 44. Ne3 Kc6 45. Nf5 Bc7 46. Ne7+ Kb7 47. Kc4 Re8 48. Nd5 Bd8 49. Rb1 Kc6 50. Ra1 b5+ 51. Kb3 a5 52. Rc1 c4+ 53. Ka3 f5 54. Kb2 Rg8 55. Ne3 fxe4 56. fxe4 Rf8 57. Ng4 Re8 58. Be3 a4 59. Bd2 Kc5 60. Ka3 Re6 61. Bc3 Be7 62. Rd1 Kb6+ 63. Bb4 c3 64. Bxe7 Rxe7 65. Ne3 Ka5 66. Nd5 Rf7 67. Nb4 Rf2 68. Rd6 |
| ECO A05 in 2001 play it! schebler gerhard defeats black's van blitterswijk in 105 moves | 1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. c4 dxc4 5. Qc2 Qc7 6. Qxc4 e5 7. O-O Bd6 8. Qc2 O-O 9. d4 exd4 10. Nxd4 Re8 11. Na3 Bg4 12. e4 Bh5 13. Nf5 Bxa3 14. bxa3 Bg6 15. Bf4 Qa5 16. Nd6 Re7 17. Rab1 Nd5 18. Rxb7 Rxb7 19. Nxb7 Qxa3 20. Bd6 Qc3 21. Qxc3 Nxc3 22. Nc5 Nd7 23. Nxd7 Rd8 24. e5 Rxd7 25. Bxc6 Be4 26. Bxe4 Nxe4 27. Bb4 h5 28. Re1 Rd4 29. Be7 Rd7 30. Rxe4 Rxe7 31. f4 f6 32. Kf2 fxe5 33. Rxe5 Rb7 34. Rxh5 Rb2+ 35. Kf3 Rxa2 36. h4 a6 37. Rc5 Rb2 38. Kg4 Rb6 39. h5 Kf7 40. Kf5 Rf6+ 41. Kg5 Kg8 42. Rc8+ Kh7 43. Ra8 Rb6 44. Ra7 Rc6 45. g4 Rc5+ 46. Kh4 Rc4 47. f5 Rc6 48. Ra8 Rb6 49. Kg5 Rc6 50. Re8 a5 51. Ra8 Rc5 52. Ra7 Kg8 53. h6 |
| ECO A07 in 1998 play it! schebler gerhard defeats black's schmidt walter in 49 moves | 1. Nf3 d5 2. g3 Nf6 3. Bg2 c5 4. c4 e6 5. O-O Nc6 6. d4 Be7 7. cxd5 exd5 8. Nc3 O-O 9. Bg5 cxd4 10. Nxd4 h6 11. Bf4 Bg4 12. h3 Be6 13. Rc1 Qb6 14. Nxc6 bxc6 15. Na4 Qb5 16. Qc2 Rac8 17. Rfd1 c5 18. Nc3 Qa6 19. Nxd5 Nxd5 20. Bxd5 Bxd5 21. Rxd5 Qxa2 22. Rd7 Bf6 23. b3 Qa5 24. Qc4 Rcd8 25. Bc7 |
| ECO A05 in 1998 play it! schebler gerhard defeats black's hirsch stefan in 48 moves | 1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 d6 5. d4 O-O 6. Bg2 Nbd7 7. O-O e5 8. dxe5 Ng4 9. Qd2 dxe5 10. h3 Nh6 11. Ng5 Nf5 12. Rd1 Nd4 13. Nf3 Nxf3+ 14. Bxf3 c6 15. Na3 Qc7 16. Nc4 Nb6 17. Qd6 Qxd6 18. Nxd6 Rb8 19. Bg2 Be6 20. a4 Nd5 21. Rd2 f5 22. e4 fxe4 23. Nxe4 Bh6 24. Re2 Rbd8 |
| ECO A05 in 2004 play it! schebler gerhard defeats black's kabisch thilo in 115 moves | 1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 O-O 5. Bg2 d6 6. d4 Nbd7 7. O-O e5 8. dxe5 Ng4 9. Qd2 Re8 10. Rd1 dxe5 11. e4 c6 12. a4 Qc7 13. Qe2 a5 14. Nbd2 b6 15. h3 Ba6 16. Qe1 Nh6 17. Bf1 b5 18. Bc3 b4 19. Bb2 Bc8 20. Nc4 Bf8 21. Qd2 f6 22. Nd6 Qxd6 23. Qxd6 Bxd6 24. Rxd6 Nf7 25. Rxc6 Bb7 26. Rc7 Bxe4 27. Rxd7 Bxf3 28. Bc4 Rf8 29. c3 Kg7 30. cxb4 axb4 31. Bc1 Rad8 32. Rxd8 Rxd8 33. Be3 Nd6 34. Bf1 Bd5 35. Bb6 Rd7 36. a5 Ne4 37. Bg2 Kf7 38. a6 f5 39. a7 Ba8 40. Bxe4 fxe4 41. Be3 Rd3 42. Ra6 Rxb3 43. Rb6 Ra3 44. Rxb4 Ra1+ 45. Kh2 h5 46. g4 h4 47. Rb8 Bd5 48. Rd8 Bc6 49. Rh8 Kg7 50. Rc8 Bd5 51. Rc5 Ba8 52. Rxe5 Bc6 53. Rc5 Rxa7 54. Rxc6 Ra5 55. Re6 Ra4 56. Bg5 Kf7 57. Re7+ Kf8 58. Re5 |
| ECO A07 in 1999 play it! schebler gerhard defeats black's pauling markus in 83 moves | 1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. O-O h6 5. d3 Bf5 6. c4 dxc4 7. dxc4 Qxd1 8. Rxd1 Nbd7 9. b4 a6 10. b5 cxb5 11. cxb5 Rc8 12. bxa6 bxa6 13. Bb2 e6 14. Nbd2 Be7 15. Nd4 O-O 16. Nxf5 exf5 17. Rac1 Rxc1 18. Rxc1 Rb8 19. Bd4 Ba3 20. Rc2 Bb4 21. Bf3 Bxd2 22. Rxd2 Rb1+ 23. Kg2 Ne4 24. Rc2 Ng5 25. Rc8+ Kh7 26. Bc6 Ne6 27. Bxd7 Nxd4 28. e3 Ne6 29. Rc6 Rb7 30. Bxe6 fxe6 31. Rxe6 Ra7 32. Kf3 a5 33. a4 g6 34. Rb6 h5 35. h3 Kh6 36. Rb5 Ra6 37. g4 fxg4+ 38. hxg4 h4 39. Kg2 Ra7 40. Re5 g5 41. f4 gxf4 42. exf4 |
| ECO A07 in 2001 play it! schebler gerhard defeats black's hoefker mathias in 69 moves | 1. Nf3 d5 2. g3 Nc6 3. d4 Bg4 4. Bg2 e6 5. O-O Nf6 6. c4 Be7 7. Ne5 Nxe5 8. dxe5 Nd7 9. h3 Bh5 10. cxd5 exd5 11. f4 Bc5+ 12. Kh2 c6 13. Nc3 f5 14. Qc2 O-O 15. e6 Nb6 16. Nxd5 Qd6 17. Nc3 Qxe6 18. e4 Bg6 19. e5 Rad8 20. b3 Rd7 21. Ne2 Be7 22. Bb2 Rfd8 23. Rad1 Rxd1 24. Rxd1 Rxd1 25. Qxd1 Qd7 26. Qc2 Bf7 27. Nd4 Be6 28. Nxe6 Qxe6 29. Bd4 Bb4 30. Bf1 Kf8 31. g4 g6 32. gxf5 Qxf5 33. Qxf5+ gxf5 34. Bxb6 axb6 35. Bd3 |
| ECO A05 in 2002 play it! schebler gerhard defeats black's gasthofer alexan in 135 moves | 1. Nf3 Nf6 2. g3 d5 3. Bg2 g6 4. b3 Bg7 5. Bb2 O-O 6. c4 c6 7. O-O Bf5 8. d3 Qc8 9. Nbd2 Bh3 10. Rc1 Bxg2 11. Kxg2 Qd8 12. Rc2 Ne8 13. Qa1 Bxb2 14. Qxb2 Nf6 15. Rfc1 Na6 16. b4 Nc7 17. cxd5 Nfxd5 18. Ne4 Qc8 19. Nc5 Rb8 20. Ne5 Rd8 21. Qb3 Ne6 22. Nf3 Nxc5 23. bxc5 Re8 24. Rc4 Qc7 25. Ra4 a6 26. d4 Nf6 27. Ne5 Rf8 28. Rb1 Nd7 29. Nxd7 Qxd7 30. Qf3 Rfe8 31. e3 e5 32. Rab4 exd4 33. Rxd4 Qe7 34. Rd6 Qe5 35. Rf6 Re7 36. h4 Rd8 37. h5 Qxh5 38. Qxh5 gxh5 39. Rf5 Rd2 40. a4 Ra2 41. Rb4 Rd7 42. Rg5+ Kf8 43. Rxh5 Rd5 44. Rxd5 cxd5 45. Rxb7 Rxa4 46. Rd7 Rc4 47. Rd8+ Kg7 48. Rxd5 a5 49. c6 Rxc6 50. Rxa5 Rc2 51. g4 Rb2 52. Kg3 Rb3 53. Ra6 Rb4 54. Rd6 Ra4 55. f3 Ra3 56. e4 f6 57. Kf2 h6 58. Ke2 Rb3 59. Rd3 Rb1 60. Ke3 Kg6 61. Rd6 Ra1 62. Kf4 Ra4 63. Kg3 Ra5 64. Kh4 Re5 65. Rd7 h5 66. Rd5 Rxd5 67. exd5 hxg4 68. Kxg4 |
| ECO A07 in 1999 play it! schebler gerhard defeats black's weinzettl ernst in 71 moves | 1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. O-O e6 5. d4 Nf6 6. Nbd2 Nbd7 7. Re1 Be7 8. e4 O-O 9. c3 dxe4 10. Nxe4 Nxe4 11. Rxe4 Bh5 12. Qb3 Qb6 13. Re1 Bg6 14. Nd2 Bd3 15. Nc4 Qa6 16. Ne3 Nb6 17. Ng4 Qa4 18. Ne5 Qxb3 19. axb3 Bc2 20. Nc4 Nxc4 21. bxc4 Bd6 22. b4 Bd3 23. Bf1 Bxf1 24. Kxf1 Bc7 25. Be3 a5 26. b5 a4 27. Reb1 Ba5 28. Ra3 Rfc8 29. b6 f6 30. c5 Kf7 31. Rba1 Ra6 32. Ke2 Rca8 33. Kd3 e5 34. Rxa4 Ke6 35. Kc4 exd4 36. cxd4 |
| ECO A04 in 1998 play it! schebler gerhard defeats black's kedziora claus in 39 moves | 1. Nf3 d6 2. d4 Nf6 3. Nc3 g6 4. e4 Bg7 5. Be3 O-O 6. Qd2 c6 7. h4 Qa5 8. Bd3 Nbd7 9. O-O-O b5 10. Kb1 b4 11. Ne2 Nb6 12. Nc1 Na4 13. Nb3 Qb6 14. h5 Ng4 15. hxg6 hxg6 16. Bh6 Nxh6 17. Rxh6 Ba6 18. Rdh1 Bxd3 19. Rh8+ Bxh8 20. Qh6 |
| ECO A05 in 2005 play it! schebler gerhard defeats black's wantiez fabrice in 63 moves | 1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 d6 5. d4 Nc6 6. Bg2 e5 7. dxe5 Ng4 8. Qd2 O-O 9. O-O Ngxe5 10. c4 Bg4 11. h3 Nxf3+ 12. exf3 Be6 13. Bxg7 Kxg7 14. Nc3 Ne7 15. Rad1 Nf5 16. f4 Rb8 17. Rfe1 Bd7 18. Qb2 Bc6 19. Be4 f6 20. Bxf5 gxf5 21. Nd5 Bxd5 22. cxd5 Qd7 23. Re6 Rbe8 24. Rde1 c6 25. Qe2 Rxe6 26. dxe6 Qe8 27. e7 Rh8 28. Qe6 d5 29. Qxf5 Qf7 30. Qg4+ Kh6 31. Re5 Re8 32. Rg5 |
| ECO A10 in 1993 play it! schebler gerhard defeats black's dormann lars in 71 moves | 1. c4 f5 2. Nf3 Nf6 3. g3 g6 4. Nc3 Bg7 5. Bg2 O-O 6. O-O d6 7. d4 c6 8. b3 a5 9. Bb2 Na6 10. d5 e5 11. dxe6 Bxe6 12. Ng5 Qe7 13. Qd2 Rfe8 14. Rad1 Rad8 15. Rfe1 Nc5 16. e4 fxe4 17. Ncxe4 Nfxe4 18. Nxe4 Bxb2 19. Nxc5 dxc5 20. Qxb2 Rxd1 21. Rxd1 Bf5 22. h3 Qe5 23. Qxe5 Rxe5 24. g4 Bc2 25. Rd7 Re1+ 26. Kh2 a4 27. Rxb7 axb3 28. axb3 Rb1 29. Bxc6 Rxb3 30. Bd5+ Kh8 31. Rc7 h5 32. Rxc5 hxg4 33. hxg4 Kg7 34. g5 Bf5 35. Rc7+ Kf8 36. c5 |
| ECO A11 in 2004 play it! schebler gerhard defeats black's skytte rasmus in 53 moves | 1. c4 c6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. O-O Qd5 6. Na3 Be6 7. b3 cxb3 8. axb3 Nbd7 9. Nc4 Qh5 10. d3 Bh3 11. Qc2 Bxg2 12. Kxg2 e6 13. Bf4 Nd5 14. Bd6 Ne7 15. Ra5 c5 16. Bxc5 Nc6 17. Bxf8 Nxa5 18. Bxg7 Rg8 19. Bc3 Nxc4 20. bxc4 b5 21. Rb1 bxc4 22. Qa4 Qc5 23. Ne5 Qc7 24. Nxc4 Rg5 25. Ba5 Qc5 26. e4 f6 27. Bb4 |
| ECO A10 in 2001 play it! schebler gerhard defeats black's ciornei dragos in 79 moves | 1. c4 g6 2. Nf3 Bg7 3. e4 d6 4. d4 Nf6 5. Nc3 O-O 6. Be2 Nbd7 7. Be3 e5 8. d5 Nc5 9. Nd2 a5 10. g4 Ne8 11. Rg1 Kh8 12. Nb3 b6 13. Qd2 a4 14. Nxc5 dxc5 15. h4 f5 16. Bg5 Qd7 17. gxf5 gxf5 18. exf5 Nd6 19. f6 Bxf6 20. O-O-O Qf7 21. Rg2 Bf5 22. Rdg1 a3 23. b3 Rg8 24. Bg4 Bxg4 25. Rxg4 Bxg5 26. hxg5 Rg6 27. Qe3 Qf5 28. Ne4 Rf8 29. R1g2 Qf3 30. Kd2 Qxe3+ 31. fxe3 Nxe4+ 32. Rxe4 Rf5 33. Reg4 e4 34. Rxe4 Rgxg5 35. Re8+ Kg7 36. Rh2 Rh5 37. Re2 Rf7 38. Rg2+ Kf6 39. Re6+ Kf5 40. Rf2+ |