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ForumCERTABO FORUM: Certabo generalThree-fold repetition not recogni …

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Three-fold repetition not recognized?

#1 · June 19, 2021, 8:39 pm

Quote from cpuchess on June 19, 2021, 8:39 pm
So I was having my DaVinci Extreme using the brainfish230518 play against my PC that was running Komodo Dragon 2 and according to the Komodo the game ended with a three-fold repetition. However there was no such announcement on the DaVinci Extreme. After Komodo's last move (move 53) when it made the announcement the DaVinci kept on playing, I continued to shuffle the king back and forth for black as if Komodo was still playing and DaVinci kept on shuffling it's rook back and forth too, no announcement of a draw by three-fold repetition.

[Event "Blitz 5min+10sec"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "brainfish230518"]
[Black "Dragon by Komodo Chess 2 64-bi"]
[Result "1/2-1/2"]
[PlyCount "106"]
[TimeControl "300+10"]
{2304MB, Fritz 17.ctg, BLACKBIRD002} 1. e4 {0} c6 {B 0} 2. d4 {12} d5 {B 0} 3.
e5 {13} Bf5 {B 0} 4. Nf3 {13} e6 {B 0} 5. Be2 {11} c5 {B 0} 6. Be3 {12} Nd7 {
B 0} 7. O-O {12} Ne7 {B 0} 8. c4 {11} dxc4 {B 0} 9. Na3 {13} Nd5 {B 0} 10. Bg5
{11} Be7 {0.48/27 19} 11. Bxe7 {19} Qxe7 {B 0} 12. Nxc4 {15} O-O {B 0} 13. Nd6
{13} Bg6 {0.44/29 46} 14. Bc4 {51 (dxc5)} N5b6 {0.15/27 21} 15. Bb3 {31 (Bd3)}
Bh5 {0.00/28 23} 16. Re1 {37} a5 {0.00/30 0} 17. Qd3 {37 (Rc1)} Bxf3 {-0.01/27
15} 18. Qxf3 {33} cxd4 {0.00/31 0} 19. Qe4 {39} Nc5 {0.00/33 0} 20. Qxd4 {51}
Nxb3 {0.00/36 0} 21. axb3 {51} Nd5 {0.00/36 0} 22. Rad1 {44 (h3)} Rad8 {
0.00/29 34} 23. Qg4 {51 (Qa4)} h6 {0.00/32 43} 24. h3 {55} Nb4 {0.00/36 0} 25.
f4 {21 (Re3)} Kh7 {0.00/31 21} 26. Kh1 {61 (Qf3)} f5 {0.00/30 14} 27. Qf3 {26}
Nd5 {0.00/32 0} 28. Rd4 {27} Rd7 {0.00/35 4} 29. Red1 {36} Qh4 {0.00/36 0} 30.
Kh2 {34 (Nb5)} Rc7 {0.00/36 17} 31. Qd3 {25} Nb4 {0.00/36 16} 32. Qe2 {31 (Qg3)
} Rc2 {0.00/34 20} 33. R1d2 {54} Rxd2 {0.00/39 0} 34. Qxd2 {15} b6 {0.00/36 9}
35. Nb5 {33 (Nc4)} Nd5 {0.00/37 19} 36. Nc3 {47} Nxc3 {0.00/42 0} 37. bxc3 {18}
b5 {0.00/42 0} 38. Rd6 {36} Ra8 {0.00/44 0} 39. Rxe6 {21} a4 {0.00/43 2} 40.
bxa4 {30} Rxa4 {0.00/45 4} 41. Rb6 {44} Qxf4+ {0.00/46 0} 42. Qxf4 {33} Rxf4 {
0.00/49 1} 43. Rxb5 {32} Re4 {0.00/50 0} 44. Kg1 {24 (Kg3)} g5 {0.00/43 30} 45.
Kf2 {24 (Rc5)} Kg6 {0.00/50 29} 46. Rb6+ {31} Kg7 {0.00/52 0} 47. Rb7+ {26} Kg6
{0.00/54 14} 48. Rb6+ {30} Kg7 {0.00/54 16} 49. Re6 {49 (Rb7+)} h5 {0.00/51 28}
50. Re7+ {21} Kg6 {0.00/55 3} 51. Re6+ {34} Kg7 {0.00/56 0} 52. Re7+ {55} Kg6 {
0.00/60 0} 53. Re6+ {26} Kg7 {0.00/61 46} 1/2-1/2

So I was having my DaVinci Extreme using the brainfish230518 play against my PC that was running Komodo Dragon 2 and according to the Komodo the game ended with a three-fold repetition. However there was no such announcement on the DaVinci Extreme. After Komodo's last move (move 53) when it made the announcement the DaVinci kept on playing, I continued to shuffle the king back and forth for black as if Komodo was still playing and DaVinci kept on shuffling it's rook back and forth too, no announcement of a draw by three-fold repetition.

[Event "Blitz 5min+10sec"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "brainfish230518"]
[Black "Dragon by Komodo Chess 2 64-bi"]
[Result "1/2-1/2"]
[PlyCount "106"]
[TimeControl "300+10"]

{2304MB, Fritz 17.ctg, BLACKBIRD002} 1. e4 {0} c6 {B 0} 2. d4 {12} d5 {B 0} 3.
e5 {13} Bf5 {B 0} 4. Nf3 {13} e6 {B 0} 5. Be2 {11} c5 {B 0} 6. Be3 {12} Nd7 {
B 0} 7. O-O {12} Ne7 {B 0} 8. c4 {11} dxc4 {B 0} 9. Na3 {13} Nd5 {B 0} 10. Bg5
{11} Be7 {0.48/27 19} 11. Bxe7 {19} Qxe7 {B 0} 12. Nxc4 {15} O-O {B 0} 13. Nd6
{13} Bg6 {0.44/29 46} 14. Bc4 {51 (dxc5)} N5b6 {0.15/27 21} 15. Bb3 {31 (Bd3)}
Bh5 {0.00/28 23} 16. Re1 {37} a5 {0.00/30 0} 17. Qd3 {37 (Rc1)} Bxf3 {-0.01/27
15} 18. Qxf3 {33} cxd4 {0.00/31 0} 19. Qe4 {39} Nc5 {0.00/33 0} 20. Qxd4 {51}
Nxb3 {0.00/36 0} 21. axb3 {51} Nd5 {0.00/36 0} 22. Rad1 {44 (h3)} Rad8 {
0.00/29 34} 23. Qg4 {51 (Qa4)} h6 {0.00/32 43} 24. h3 {55} Nb4 {0.00/36 0} 25.
f4 {21 (Re3)} Kh7 {0.00/31 21} 26. Kh1 {61 (Qf3)} f5 {0.00/30 14} 27. Qf3 {26}
Nd5 {0.00/32 0} 28. Rd4 {27} Rd7 {0.00/35 4} 29. Red1 {36} Qh4 {0.00/36 0} 30.
Kh2 {34 (Nb5)} Rc7 {0.00/36 17} 31. Qd3 {25} Nb4 {0.00/36 16} 32. Qe2 {31 (Qg3)
} Rc2 {0.00/34 20} 33. R1d2 {54} Rxd2 {0.00/39 0} 34. Qxd2 {15} b6 {0.00/36 9}
35. Nb5 {33 (Nc4)} Nd5 {0.00/37 19} 36. Nc3 {47} Nxc3 {0.00/42 0} 37. bxc3 {18}
b5 {0.00/42 0} 38. Rd6 {36} Ra8 {0.00/44 0} 39. Rxe6 {21} a4 {0.00/43 2} 40.
bxa4 {30} Rxa4 {0.00/45 4} 41. Rb6 {44} Qxf4+ {0.00/46 0} 42. Qxf4 {33} Rxf4 {
0.00/49 1} 43. Rxb5 {32} Re4 {0.00/50 0} 44. Kg1 {24 (Kg3)} g5 {0.00/43 30} 45.
Kf2 {24 (Rc5)} Kg6 {0.00/50 29} 46. Rb6+ {31} Kg7 {0.00/52 0} 47. Rb7+ {26} Kg6
{0.00/54 14} 48. Rb6+ {30} Kg7 {0.00/54 16} 49. Re6 {49 (Rb7+)} h5 {0.00/51 28}
50. Re7+ {21} Kg6 {0.00/55 3} 51. Re6+ {34} Kg7 {0.00/56 0} 52. Re7+ {55} Kg6 {
0.00/60 0} 53. Re6+ {26} Kg7 {0.00/61 46} 1/2-1/2

#2 · June 21, 2021, 9:18 am

Hello Cpuchess

Yes there is actually no call for draw after three-fold repetition, we do have the five fold repetition after which the game will automatically draw. Since the draw after three-fold is voluntary in theory the player should ask for that we may add a pop up to ask the player if he wants to draw eventually.

All the best

Pietro

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