threefold repetition... or is it?

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Avatar of sloboballo
Hi I have just encountered this even though it didn't seem true... no real repetition happened. or am i missing sth here? anyway, here's pgn (my last game) [Event "sloboballo vs. RONAK8488"] [Site " Chess.com"] [Date "15 mag 2020"] [White "sloboballo"] [Black "RONAK8488"] [Result "1/2-1/2"] [WhiteElo "1171"] [BlackElo "1168"] [TimeControl "1 in 0 day"] [SetUp "1"] [Termination "Game drawn by repetition"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 h6 4. O-O a6 5. d4 exd4 6. Nxd4 Nxd4 7. Qxd4 Nf6 8. Nc3 d6 9. Rd1 Be7 10. Bf4 O-O 11. e5 Nh5 12. Bxh6 gxh6 13. Qe4 Ng7 14. Bd3 Bf5 15. Qf4 Bxd3 16. Rxd3 Bg5 17. Qg4 Qe7 18. h4 Rad8 19. hxg5 Qxg5 20. Rg3 Qxg4 21. Rxg4 dxe5 22. Ne4 f6 23. Rg6 f5 24. Nf6+ Kf7 25. Rxh6 Ke7 26. Re1 Rxf6 27. Rxf6 Kxf6 28. Re2 f4 29. f3 Nf5 30. c3 Rd7 31. Kf2 b5 32. b3 c5 33. Rb2 Ne7 34. g3 fxg3+ 35. Kxg3 Nf5+ 36. Kf2 Kg5 37. b4 c4 38. Re2 Rd5 39. a4 Kf4 40. Re4+ Kg5 41. Re2 Nd6 42. Kg3 Nf5+ 43. Kf2 1/2-1/2 Sent from my Android
Avatar of notmtwain
sloboballo wrote:
Hi I have just encountered this even though it didn't seem true... no real repetition happened. or am i missing sth here? anyway, here's pgn (my last game) [Event "sloboballo vs. RONAK8488"] [Site " Chess.com"] [Date "15 mag 2020"] [White "sloboballo"] [Black "RONAK8488"] [Result "1/2-1/2"] [WhiteElo "1171"] [BlackElo "1168"] [TimeControl "1 in 0 day"] [SetUp "1"] [Termination "Game drawn by repetition"] 1. e4 e5 2. Nf3 Nc6 3. Bc4 h6 4. O-O a6 5. d4 exd4 6. Nxd4 Nxd4 7. Qxd4 Nf6 8. Nc3 d6 9. Rd1 Be7 10. Bf4 O-O 11. e5 Nh5 12. Bxh6 gxh6 13. Qe4 Ng7 14. Bd3 Bf5 15. Qf4 Bxd3 16. Rxd3 Bg5 17. Qg4 Qe7 18. h4 Rad8 19. hxg5 Qxg5 20. Rg3 Qxg4 21. Rxg4 dxe5 22. Ne4 f6 23. Rg6 f5 24. Nf6+ Kf7 25. Rxh6 Ke7 26. Re1 Rxf6 27. Rxf6 Kxf6 28. Re2 f4 29. f3 Nf5 30. c3 Rd7 31. Kf2 b5 32. b3 c5 33. Rb2 Ne7 34. g3 fxg3+ 35. Kxg3 Nf5+ 36. Kf2 Kg5 37. b4 c4 38. Re2 Rd5 39. a4 Kf4 40. Re4+ Kg5 41. Re2 Nd6 42. Kg3 Nf5+ 43. Kf2 1/2-1/2 Sent from my Android


You only have to start checking at move 39, the last pawn move.

It's repetition of position, not move.

 

Avatar of sloboballo

I don't think position was repeated not even once, let alone wice... So can someone confirm if this is a bug to report or prove somehow it's threefold positional repetition after the last pawn move. Thanks ahead.

Avatar of notmtwain
sloboballo escribió:

I don't think position was repeated not even once, let alone wice... So can someone confirm if this is a bug to report or prove somehow it's threefold positional repetition after the last pawn move. Thanks ahead.

I put comments in the score to show you where the repetition took place.

Avatar of blueemu

The position is identical after White's 39th, 41st and 43 moves.

Only the position needs to repeat, not the moves that create the position.

Avatar of notmtwain



Satisfied?

Avatar of sloboballo

Thank you for taking the time to explain. It didn't seem so obvious, but now it's clearer. Usually threefold repetition was with perpetual check and queen... this kind seems a bit rarer. Thanks a lot again!