ArnoHu wrote:

LEPakko123456 wrote:

ArnoHu wrote:

LEPakko123456 wrote:

LEPakko123456 wrote:

LEPakko123456 wrote:

1. d4 f5 2. Nf3 Nf6 3. h3 e6 4. g3 Bd6 5. Bg2 O-O 6. O-O Nc6 7. c4 b6 8. Be3 Bb7
9. Nc3 Bb4 10. Ne5 Nxe5 11. dxe5 Bxg2 12. Kxg2 Bxc3 13. bxc3 Ne4 14. Qd4 h6 15.
f3 Nc5 16. Rad1 a5 17. Rg1 Qe8 18. Rd2 Qh5 19. Rdd1 Rad8 20. h4 a4 21. Rge1 a3
22. Bc1 Ra8 23. Rh1 Rfd8 24. Be3 Qe8 25. Rhg1 d6 26. g4 dxe5 27. Qxe5 Rxd1 28.
Rxd1 fxg4 29. Bxc5 gxf3+ 30. Kh3 bxc5 31. exf3 Qc6 32. Qe4 Qxe4 33. fxe4 Ra4 34.
Rd7 Rxc4 35. Rxc7 Rxe4 36. Rxc5 Re2 37. Ra5 Rxa2 38. c4 Kf7 39. c5 Ke8 40. Ra7
Ra1 41. c6 Kd8 42. Kg2 g5 43. hxg5 hxg5 44. Kf3 a2 45. Kg2 Kc8 46. Kh2 e5 47.
Kg2 e4 48. Kf2 Rh1 49. Rxa2 Rh2+ 50. Ke3 Rxa2 51. Kxe4 Rf2 52. Ke3 Rf8 53. Kd4
g4 54. Kd5 g3 55. Kc5 g2 56. Kb5 g1=Q 57. Kc4 Qe3 58. Kb4 Kc7 59. Kc4 Rf4+ 60.
Kd5 Qf3+ 61. Kc5 Qe3+ 62. Kd5 Qf3+ 63. Kc5 Qh5# 0-1

GoK won chess.coms Francis the secound-best free bot.
I verifyd a milion times that it really won.

It did not win the best one.

GoK TW no turbo mode or 250 fps tied it without knowing it cuz page crashed

1. e4 e5 2. d4 exd4 3. Nf3 Bc5 4. Bc4 Nf6 5. O-O O-O 6. c3 Nxe4 7. cxd4 d5 8.
Bd3 Bd6 9. Nc3 Re8 10. Re1 Bf5 11. Nxd5 Bxh2+ 12. Kxh2 Qxd5 13. Bf4 c5 14. Qb3
Qxb3 15. axb3 Nc6 16. Ne5 cxd4 17. Nxc6 bxc6 18. b4 Ng3 19. Kxg3 Rxe1 20. Rxe1
Bxd3 21. Rd1 Bc2 22. Rxd4 f6 23. Rc4 Ba4 24. Be3 Kf7 25. Rd4 Ke6 26. Re4+ Kf7
27. Bc5 a6 28. Re7+ Kg6 29. Kf4 Rd8 30. Rc7 Bb5 31. g4 h6 32. Kg3 Rg8 33. f4 f5
34. Re7 fxg4 35. Kxg4 Kf6 36. Re3 h5+ 37. Kg3 g6 38. b3 Rb8 39. Kh4 Rb7 40. Re8
Bd3 41. Rd8 Be4 42. f5 Kxf5 43. Rf8+ Ke6 44. Re8+ Kf5 45. Rf8+ Ke6 46. Re8+ Kf5
47. Rf8+

https://turbowarp.org/148769358?fps=250&turbo lost to Danya

1. Ng1f3 Ng8f6 2. c2c4 g7g6 3. Nb1c3 Bf8g7 4. g2g3 O-O 5. Bf1g2 d7d5 6. d2d4 Bc8f5 7. c4xd5 c7c6 8. d5xc6 b7xc6 9. O-O Nf6g4 10. e2e4 Bf5e6 11. Bc1f4 Be6c4 12. Rf1e1 e7e6 13. h2h3 e6e5 14. d4xe5 Qd8xd1 15. Ra1xd1 g6g5 16. h3xg4 g5xf4 17. g3xf4 h7h6 18. b2b3 Bc4b5 19. Nf3d4 a7a6 20. Nd4f5 f7f6 21. e5xf6 Bg7xf6 22. e4e5 Bf6g7 23. Bg2e4 Ra8a7 24. a2a4 Rf8xf5 25. Be4xf5 Ra7f7 26. Bf5e6 Bb5c4 27. b3xc4 Kg8f8 28. Be6xf7 Kf8xf7 29. Rd1d8 h6h5 30. g4xh5 Bg7h6 31. f4f5 Kf7e7 32. Rd8xb8 a6a5 33. Rb8b7 Ke7e8 34. Nc3e4 Bh6f4 35. Ne4d6 Ke8f8 36. f5f6 Kf8g8 37. Rb7b8 Kg8h7 38. f6f7 Bf4h2 39. Kg1xh2 c6c5 40. Re1g1 Kh7h6 41. Rb8h8
GoK lost?!

chess.coms analysis:

Hmm… odd limits even code‍ tag does not work

Thank you! Strange, I could not reproduce GoK's mistakes. On TurboWarp moves 6 and 9 are discarded after 1.2 resp. 0.3 seconds. How fast is your system?

ASUS VivoBook 14 intel core i3

It would be great if you could import the following two FENs (playing white on TurboWarp / Difficult), then press ‘l’, right-click, export and paste the log data into a reply.

rnbq1rk1/ppp1ppbp/5np1/3p4/2PP4/2N2NP1/PP2PPBP/R1BQK2R b KQ - 0 6
rn1q1rk1/p3ppbp/2p2np1/5b2/3P4/2N2NP1/PP2PPBP/R1BQ1RK1 b - - 1 9

Which search depth do you reach (press ‘d’ for debug info)?

Thank you!

9180272.715:0
9180272.971:0: InitLookup done
0.001:1
0.001:1: InitLookup done
0.01:1:2835:120
0.029:2
0.043:2:2835:-71
0.058:2:0339:-36
0.07:2:0330:-23
0.109:3
0.23:3:0330:-44
0.37:3:0219:-40
0.404:4
0.61:4:0219:-97
0.764:4:0330:-56
1.024:5
1.538:5:0330:-65
2.119:5:0219:-37
2.333:6
2.86:6:0219:-79
4.338:6:0339:-78
5.239:6:2835:-54
5.737:7
7.723:7:2835:-63
9.206:7:0219:-62
15.101:7:1127:-59
15.405:8

9180232.663:0
9180232.906:0: InitLookup done
0.001:1
0.001:1: InitLookup done
0.011:1:0212:62
0.026:2
0.044:2:0212:-72
0.061:2:2239:-71
0.117:3
0.196:3:2239:-106
0.274:3:0212:-69
0.494:3:2228:-66
0.508:4
0.705:4:2228:-93
1.285:4:0420:-89
1.668:5
2.225:5:0420:-91
2.478:5:2228:-81
2.744:6
3.403:6:2228:-110
3.928:6:0420:-100
4.359:6:0212:-99
6.978:7
10.574:7:0212:-100
18.696:7:0425:-95

LEPakko123456 wrote:

ArnoHu wrote:

LEPakko123456 wrote:

ArnoHu wrote:

LEPakko123456 wrote:

LEPakko123456 wrote:

LEPakko123456 wrote:

1. d4 f5 2. Nf3 Nf6 3. h3 e6 4. g3 Bd6 5. Bg2 O-O 6. O-O Nc6 7. c4 b6 8. Be3 Bb7
9. Nc3 Bb4 10. Ne5 Nxe5 11. dxe5 Bxg2 12. Kxg2 Bxc3 13. bxc3 Ne4 14. Qd4 h6 15.
f3 Nc5 16. Rad1 a5 17. Rg1 Qe8 18. Rd2 Qh5 19. Rdd1 Rad8 20. h4 a4 21. Rge1 a3
22. Bc1 Ra8 23. Rh1 Rfd8 24. Be3 Qe8 25. Rhg1 d6 26. g4 dxe5 27. Qxe5 Rxd1 28.
Rxd1 fxg4 29. Bxc5 gxf3+ 30. Kh3 bxc5 31. exf3 Qc6 32. Qe4 Qxe4 33. fxe4 Ra4 34.
Rd7 Rxc4 35. Rxc7 Rxe4 36. Rxc5 Re2 37. Ra5 Rxa2 38. c4 Kf7 39. c5 Ke8 40. Ra7
Ra1 41. c6 Kd8 42. Kg2 g5 43. hxg5 hxg5 44. Kf3 a2 45. Kg2 Kc8 46. Kh2 e5 47.
Kg2 e4 48. Kf2 Rh1 49. Rxa2 Rh2+ 50. Ke3 Rxa2 51. Kxe4 Rf2 52. Ke3 Rf8 53. Kd4
g4 54. Kd5 g3 55. Kc5 g2 56. Kb5 g1=Q 57. Kc4 Qe3 58. Kb4 Kc7 59. Kc4 Rf4+ 60.
Kd5 Qf3+ 61. Kc5 Qe3+ 62. Kd5 Qf3+ 63. Kc5 Qh5# 0-1

GoK won chess.coms Francis the secound-best free bot.
I verifyd a milion times that it really won.

It did not win the best one.

GoK TW no turbo mode or 250 fps tied it without knowing it cuz page crashed

1. e4 e5 2. d4 exd4 3. Nf3 Bc5 4. Bc4 Nf6 5. O-O O-O 6. c3 Nxe4 7. cxd4 d5 8.
Bd3 Bd6 9. Nc3 Re8 10. Re1 Bf5 11. Nxd5 Bxh2+ 12. Kxh2 Qxd5 13. Bf4 c5 14. Qb3
Qxb3 15. axb3 Nc6 16. Ne5 cxd4 17. Nxc6 bxc6 18. b4 Ng3 19. Kxg3 Rxe1 20. Rxe1
Bxd3 21. Rd1 Bc2 22. Rxd4 f6 23. Rc4 Ba4 24. Be3 Kf7 25. Rd4 Ke6 26. Re4+ Kf7
27. Bc5 a6 28. Re7+ Kg6 29. Kf4 Rd8 30. Rc7 Bb5 31. g4 h6 32. Kg3 Rg8 33. f4 f5
34. Re7 fxg4 35. Kxg4 Kf6 36. Re3 h5+ 37. Kg3 g6 38. b3 Rb8 39. Kh4 Rb7 40. Re8
Bd3 41. Rd8 Be4 42. f5 Kxf5 43. Rf8+ Ke6 44. Re8+ Kf5 45. Rf8+ Ke6 46. Re8+ Kf5
47. Rf8+

https://turbowarp.org/148769358?fps=250&turbo lost to Danya

1. Ng1f3 Ng8f6 2. c2c4 g7g6 3. Nb1c3 Bf8g7 4. g2g3 O-O 5. Bf1g2 d7d5 6. d2d4 Bc8f5 7. c4xd5 c7c6 8. d5xc6 b7xc6 9. O-O Nf6g4 10. e2e4 Bf5e6 11. Bc1f4 Be6c4 12. Rf1e1 e7e6 13. h2h3 e6e5 14. d4xe5 Qd8xd1 15. Ra1xd1 g6g5 16. h3xg4 g5xf4 17. g3xf4 h7h6 18. b2b3 Bc4b5 19. Nf3d4 a7a6 20. Nd4f5 f7f6 21. e5xf6 Bg7xf6 22. e4e5 Bf6g7 23. Bg2e4 Ra8a7 24. a2a4 Rf8xf5 25. Be4xf5 Ra7f7 26. Bf5e6 Bb5c4 27. b3xc4 Kg8f8 28. Be6xf7 Kf8xf7 29. Rd1d8 h6h5 30. g4xh5 Bg7h6 31. f4f5 Kf7e7 32. Rd8xb8 a6a5 33. Rb8b7 Ke7e8 34. Nc3e4 Bh6f4 35. Ne4d6 Ke8f8 36. f5f6 Kf8g8 37. Rb7b8 Kg8h7 38. f6f7 Bf4h2 39. Kg1xh2 c6c5 40. Re1g1 Kh7h6 41. Rb8h8
GoK lost?!

chess.coms analysis:

Hmm… odd limits even code‍ tag does not work

Thank you! Strange, I could not reproduce GoK's mistakes. On TurboWarp moves 6 and 9 are discarded after 1.2 resp. 0.3 seconds. How fast is your system?

ASUS VivoBook 14 intel core i3

It would be great if you could import the following two FENs (playing white on TurboWarp / Difficult), then press ‘l’, right-click, export and paste the log data into a reply.

rnbq1rk1/ppp1ppbp/5np1/3p4/2PP4/2N2NP1/PP2PPBP/R1BQK2R b KQ - 0 6
rn1q1rk1/p3ppbp/2p2np1/5b2/3P4/2N2NP1/PP2PPBP/R1BQ1RK1 b - - 1 9

Which search depth do you reach (press ‘d’ for debug info)?

Thank you!

9180272.715:0
9180272.971:0: InitLookup done
0.001:1
0.001:1: InitLookup done
0.01:1:2835:120
0.029:2
0.043:2:2835:-71
0.058:2:0339:-36
0.07:2:0330:-23
0.109:3
0.23:3:0330:-44
0.37:3:0219:-40
0.404:4
0.61:4:0219:-97
0.764:4:0330:-56
1.024:5
1.538:5:0330:-65
2.119:5:0219:-37
2.333:6
2.86:6:0219:-79
4.338:6:0339:-78
5.239:6:2835:-54
5.737:7
7.723:7:2835:-63
9.206:7:0219:-62
15.101:7:1127:-59
15.405:8

on rnbq1rk1/ppp1ppbp/5np1/3p4/2PP4/2N2NP1/PP2PPBP/R1BQK2R b KQ - 0 6

9180232.663:0
9180232.906:0: InitLookup done
0.001:1
0.001:1: InitLookup done
0.011:1:0212:62
0.026:2
0.044:2:0212:-72
0.061:2:2239:-71
0.117:3
0.196:3:2239:-106
0.274:3:0212:-69
0.494:3:2228:-66
0.508:4
0.705:4:2228:-93
1.285:4:0420:-89
1.668:5
2.225:5:0420:-91
2.478:5:2228:-81
2.744:6
3.403:6:2228:-110
3.928:6:0420:-100
4.359:6:0212:-99
6.978:7
10.574:7:0212:-100
18.696:7:0425:-95

on that other

no competision mode

Grijfland wrote:

Chess (GoK) gets chess lesson. In this match, Chess often plays moves with a loss of tempo.
Chess leaves his knight pinned on Nc3 for too long. By the way, Chess is wiped off the board here.
Chess plays with white (level D) in TurboWarp.

Event “Test GoK”
Date “2022.02.15”
Round “04”
White “Chess GoK”
Black “GRY”
Result “0-1”
ECO “E15”

Discussion Forum does not properly display the Tags of the PGN file !!

1. d2d4 Ng8f6 2. c2c4 e7e6 3. Ng1f3 b7b6 4. g2g3 Bc8a6 5. Nb1c3 Bf8b4 6. Qd1a4 c7c5 7. Bc1f4 Ba6xc4 8. Bf4d6 Nf6e4 9. d4xc5 Nb8c6 10. Ra1c1 b6xc5 11. Bd6f4 Qd8a5 12. Qa4xa5 Bb4xa5 13. Bf1g2 d7d5 14. Nf3e5 Nc6xe5 15. Bg2xe4 Ne5c6 16. Be4f3 Nc6d4 17. Bf3g4 h7h5 18. b2b3 Bc4a6 19. Bg4f3 Nd4xf3 20. e2xf3 d5d4 21. Bf4d2 d4xc3 22. Bd2xc3 Ba5xc3 23. Rc1xc3 Ra8c8 24. a2a4 c5c4 25. b3b4 h5h4 26. g3xh4 Rh8xh4 27. b4b5 Ba6b7 28. Rh1g1 Rh4xh2 29. Rg1xg7 Rh2h1 30. Ke1e2 Ke8f8 31. Rg7g4 Bb7d5 32. f3f4 Rh1a1 33. Rg4g3 Ra1xa4 34. Rg3h3 Rc8c5 35. Rc3a3 Ra4xa3 36. Rh3xa3 c4c3 37. Ke2d1 Rc5c7 38. Kd1c2 Bd5e4 39. Kc2c1 Be4d3 40. Ra3b3 Kf8e7 41. Rb3b4 Rc7c5 42. Rb4b3 Bd3xb5 43. Rb3a3 a7a6 44. Kc1c2 Bb5d3 45. Kc2c1 Ke7f6 46. Ra3b3 Kf6f5 47. Rb3a3 Kf5xf4 48. Ra3a4 Kf4f3 49. Ra4d4 Bd3f5 50. Kc1d1 Rc5b5 51. Kd1e1 Rb5b1 52. Rd4d1 c3c2 53. Rd1c1 Rb1xc1 54. Ke1d2 Rc1d1 55. Kd2c3 c1=Q+ 56. Kc3b3 Qc1b1 57. Kb3a4 Rd1d3 58. Ka4a5 Rd3a3# 0-1

ArnoHu wrote:

Grijfland wrote:

Chess (GoK) gets chess lesson. In this match, Chess often plays moves with a loss of tempo.
Chess leaves his knight pinned on Nc3 for too long. By the way, Chess is wiped off the board here.
Chess plays with white (level D) in TurboWarp.

Event “Test GoK”
Date “2022.02.15”
Round “04”
White “Chess GoK”
Black “GRY”
Result “0-1”
ECO “E15”

Discussion Forum does not properly display the Tags of the PGN file !!

1. d2d4 Ng8f6 2. c2c4 e7e6 3. Ng1f3 b7b6 4. g2g3 Bc8a6 5. Nb1c3 Bf8b4 6. Qd1a4 c7c5 7. Bc1f4 Ba6xc4 8. Bf4d6 Nf6e4 9. d4xc5 Nb8c6 10. Ra1c1 b6xc5 11. Bd6f4 Qd8a5 12. Qa4xa5 Bb4xa5 13. Bf1g2 d7d5 14. Nf3e5 Nc6xe5 15. Bg2xe4 Ne5c6 16. Be4f3 Nc6d4 17. Bf3g4 h7h5 18. b2b3 Bc4a6 19. Bg4f3 Nd4xf3 20. e2xf3 d5d4 21. Bf4d2 d4xc3 22. Bd2xc3 Ba5xc3 23. Rc1xc3 Ra8c8 24. a2a4 c5c4 25. b3b4 h5h4 26. g3xh4 Rh8xh4 27. b4b5 Ba6b7 28. Rh1g1 Rh4xh2 29. Rg1xg7 Rh2h1 30. Ke1e2 Ke8f8 31. Rg7g4 Bb7d5 32. f3f4 Rh1a1 33. Rg4g3 Ra1xa4 34. Rg3h3 Rc8c5 35. Rc3a3 Ra4xa3 36. Rh3xa3 c4c3 37. Ke2d1 Rc5c7 38. Kd1c2 Bd5e4 39. Kc2c1 Be4d3 40. Ra3b3 Kf8e7 41. Rb3b4 Rc7c5 42. Rb4b3 Bd3xb5 43. Rb3a3 a7a6 44. Kc1c2 Bb5d3 45. Kc2c1 Ke7f6 46. Ra3b3 Kf6f5 47. Rb3a3 Kf5xf4 48. Ra3a4 Kf4f3 49. Ra4d4 Bd3f5 50. Kc1d1 Rc5b5 51. Kd1e1 Rb5b1 52. Rd4d1 c3c2 53. Rd1c1 Rb1xc1 54. Ke1d2 Rc1d1 55. Kd2c3 c1=Q+ 56. Kc3b3 Qc1b1 57. Kb3a4 Rd1d3 58. Ka4a5 Rd3a3# 0-1

I cannot reproduce the blunder at 8. Bf4d6. It is discarded on TurboWarp / Difficult after 6.7 seconds on my system (average notebook), so this is about system speed search depth. But I agree GoK's game is not great after that either.

ArnoHu wrote:

Grijfland wrote:

Arno,

There is a small error in the text on this site at - BoardEvaluation -.

https://coderdojo-linz.github.io/uebungsanleitungen/programmieren/scratch/en/chess/

Having one pawn and one tower more than the other side results in a board evaluation of 900 + 500 = 1400. Thus, we can search for moves that promise the best board evaluation, and discard others.

By the way, nice explanation

Thank you, should be fixed soon.

Grijfland wrote:

ArnoHu wrote:

Grijfland wrote:

Arno,

There is a small error in the text on this site at - BoardEvaluation -.

https://coderdojo-linz.github.io/uebungsanleitungen/programmieren/scratch/en/chess/

Having one pawn and one tower more than the other side results in a board evaluation of 900 + 500 = 1400. Thus, we can search for moves that promise the best board evaluation, and discard others.

By the way, nice explanation

Thank you, should be fixed soon.

For the record Arno, this error has still not been corrected. ;-)

meonguy1 wrote:

1.d4 (1.e4 {+0.38 pws Stockfish 14.1 64-bmi2} c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Bf5
5.Ng3 Bg6 6.Nf3 Nf6 7.Bd3 e6 8.O-O Be7 9.Bxg6 hxg6 10.Qe2 Qc7 11.c4 O-O 12.Rd1
Nbd7 13.Ne4 Nxe4) Nf6 (1… d5 {+0.33 pws Stockfish 14.1 64-bmi2} 2.c4 e6 3.Nf3
Nf6 4.Nc3 Nbd7 5.Bf4 dxc4 6.e3 Nb6 7.Bxc4 Nxc4 8.Qa4+ c6 9.Qxc4 Nd5 10.O-O Nxf4
11.exf4 Be7 12.Ne5 O-O) 2.Nf3 ! d5 3.c4 e6 4.Nc3 dxc4 (4… Nbd7 {+0.25 pws
Stockfish 14.1 64-bmi2} 5.Bg5 Be7 6.cxd5 exd5 7.e3 c6 8.Bd3 h6 9.Bf4 Nh5 10.Be5
O-O 11.O-O g6 12.Kh1 Nxe5 13.Nxe5 Ng7 14.f4 Bf5) 5.Bg5 ?! (5.e3 {+0.28 pws
Stockfish 14.1 64-bmi2} a6 6.a4 c5 7.Bxc4 cxd4 8.exd4 Nc6 9.O-O Be7 10.h3 O-O
11.Re1 Qb6 12.Bb3 Rd8 13.Be3 h6 14.Rc1 Qa5 15.Qc2 Qh5 16.Qe2 Bd7 17.Bf4 Nb4
18.Rcd1) a6 6.e3 (6.e4 {-0.23 pws Stockfish 14.1 64-bmi2} b5 7.e5 h6 8.Bh4 g5
9.Nxg5 hxg5 10.Bxg5 Nbd7 11.exf6 Bb7 12.Be2 b4 13.Na4 Rg8 14.h4 Bxg2 15.Rg1 Bd5
16.Rc1 Nxf6 17.Kf1 Be7 18.Bxc4 Ne4 19.Bxe7 Rxg1+ 20.Kxg1) b5 7.a4 c6 8.axb5
(8.g3 {-0.47 pws Stockfish 14.1 64-bmi2} Bb7 9.Bg2 Nbd7 10.O-O Qb6 11.Bxf6 Nxf6
12.Ne5 Bd6 13.b3 cxb3 14.Qxb3 O-O 15.Nd3 g6 16.Rac1 b4 17.Ne4 Nxe4 18.Bxe4 a5
19.Nc5 Bc8 20.Rfd1 Rd8 21.Qc2) cxb5 9.Nxb5 ! axb5 10.Rxa8 Bb4+ 11.Nd2 Bb7
12.Bxf6 gxf6 13.Ra7 ?! (13.Ra1 {-0.91 pws Stockfish 14.1 64-bmi2} e5 14.Be2 exd4
15.O-O dxe3 16.Nxc4 Qxd1 17.Rfxd1 bxc4 18.fxe3 Bc5 19.Kf2 Ke7 20.Bxc4 Nd7 21.b4
Bb6 22.Bd5 Bxd5 23.Rxd5 Rb8 24.Rb5) Qb6 ! 14.Ra1 ! e5 15.Qg4 (15.dxe5 {-1.62 pws
Stockfish 14.1 64-bmi2} Ke7 16.Qc2 fxe5 17.Rd1 Rd8 18.Bxc4 bxc4 19.O-O Rg8 20.g3
Qc6 21.f3 Rd8 22.g4 Ke8 23.Ne4 Rxd1 24.Rxd1 Nd7 25.Nd2 Nc5 26.Nxc4 Qxf3 27.Nd6+
Kf8 28.Nxb7 Qxg4+ 29.Kh1 Nxb7) Nc6 ?! (15… Ke7 {-2.60 pws Stockfish 14.1
64-bmi2} 16.Be2 exd4 17.O-O Bxd2 18.exd4 Kf8 19.Bf3 Rg8 20.Qh3 Rg6 21.Bxb7 Qxb7
22.Qa3+ Kg7 23.Qa8 Qxa8 24.Rxa8 Bf4 25.g3 Nc6 26.Rd1 Bd6) 16.Qg7 !! Rf8 17.Rd1 ?
(17.Qxf6 {-2.24 pws Stockfish 14.1 64-bmi2} exd4 18.Qf4 Na5 19.Rxa5 Bxd2+
20.Kxd2 Qxa5+ 21.Kc2 d3+ 22.Bxd3 cxd3+ 23.Kxd3 b4 24.Rd1 Rg8 25.Ke2 Ba6+ 26.Ke1
b3+ 27.Rd2) exd4 18.Qh6 ?? (18.Be2 {-3.84 pws Stockfish 14.1 64-bmi2} Ne7 19.Qg4
dxe3 20.fxe3 Rg8 21.Qf4 Rxg2 22.Kf1 Bxd2 23.Rxd2 Rxe2 24.Kxe2 Bxh1 25.Rd6 Qc7
26.Qxf6 Ng6 27.Kd2 Qe7 28.Kc3 Qxe3+ 29.Kb4) c3 19.bxc3 dxc3 20.Nb3 ? (20.f3
{-7.61 pws Stockfish 14.1 64-bmi2} cxd2+ 21.Kf2 Ke7 22.Rb1 Ba6 23.Be2 Rd8 24.Qf4
Bc5 25.Rhd1 Ne5 26.Ra1 Bb7 27.Ra2 Nd3+ 28.Bxd3 Rxd3 29.Ke2 Bxe3 30.Kxd3 Bxf4
31.Ke2 b4) c2+ 21.Rd2 Qc5 22.Nc1 !! Ke7

So i tried making GoK play with Stockfish in the playground
GoK decided to rage quit and crash the page

ArnoHu wrote:

meonguy1 wrote:

1.d4 (1.e4 {+0.38 pws Stockfish 14.1 64-bmi2} c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Bf5
5.Ng3 Bg6 6.Nf3 Nf6 7.Bd3 e6 8.O-O Be7 9.Bxg6 hxg6 10.Qe2 Qc7 11.c4 O-O 12.Rd1
Nbd7 13.Ne4 Nxe4) Nf6 (1… d5 {+0.33 pws Stockfish 14.1 64-bmi2} 2.c4 e6 3.Nf3
Nf6 4.Nc3 Nbd7 5.Bf4 dxc4 6.e3 Nb6 7.Bxc4 Nxc4 8.Qa4+ c6 9.Qxc4 Nd5 10.O-O Nxf4
11.exf4 Be7 12.Ne5 O-O) 2.Nf3 ! d5 3.c4 e6 4.Nc3 dxc4 (4… Nbd7 {+0.25 pws
Stockfish 14.1 64-bmi2} 5.Bg5 Be7 6.cxd5 exd5 7.e3 c6 8.Bd3 h6 9.Bf4 Nh5 10.Be5
O-O 11.O-O g6 12.Kh1 Nxe5 13.Nxe5 Ng7 14.f4 Bf5) 5.Bg5 ?! (5.e3 {+0.28 pws
Stockfish 14.1 64-bmi2} a6 6.a4 c5 7.Bxc4 cxd4 8.exd4 Nc6 9.O-O Be7 10.h3 O-O
11.Re1 Qb6 12.Bb3 Rd8 13.Be3 h6 14.Rc1 Qa5 15.Qc2 Qh5 16.Qe2 Bd7 17.Bf4 Nb4
18.Rcd1) a6 6.e3 (6.e4 {-0.23 pws Stockfish 14.1 64-bmi2} b5 7.e5 h6 8.Bh4 g5
9.Nxg5 hxg5 10.Bxg5 Nbd7 11.exf6 Bb7 12.Be2 b4 13.Na4 Rg8 14.h4 Bxg2 15.Rg1 Bd5
16.Rc1 Nxf6 17.Kf1 Be7 18.Bxc4 Ne4 19.Bxe7 Rxg1+ 20.Kxg1) b5 7.a4 c6 8.axb5
(8.g3 {-0.47 pws Stockfish 14.1 64-bmi2} Bb7 9.Bg2 Nbd7 10.O-O Qb6 11.Bxf6 Nxf6
12.Ne5 Bd6 13.b3 cxb3 14.Qxb3 O-O 15.Nd3 g6 16.Rac1 b4 17.Ne4 Nxe4 18.Bxe4 a5
19.Nc5 Bc8 20.Rfd1 Rd8 21.Qc2) cxb5 9.Nxb5 ! axb5 10.Rxa8 Bb4+ 11.Nd2 Bb7
12.Bxf6 gxf6 13.Ra7 ?! (13.Ra1 {-0.91 pws Stockfish 14.1 64-bmi2} e5 14.Be2 exd4
15.O-O dxe3 16.Nxc4 Qxd1 17.Rfxd1 bxc4 18.fxe3 Bc5 19.Kf2 Ke7 20.Bxc4 Nd7 21.b4
Bb6 22.Bd5 Bxd5 23.Rxd5 Rb8 24.Rb5) Qb6 ! 14.Ra1 ! e5 15.Qg4 (15.dxe5 {-1.62 pws
Stockfish 14.1 64-bmi2} Ke7 16.Qc2 fxe5 17.Rd1 Rd8 18.Bxc4 bxc4 19.O-O Rg8 20.g3
Qc6 21.f3 Rd8 22.g4 Ke8 23.Ne4 Rxd1 24.Rxd1 Nd7 25.Nd2 Nc5 26.Nxc4 Qxf3 27.Nd6+
Kf8 28.Nxb7 Qxg4+ 29.Kh1 Nxb7) Nc6 ?! (15… Ke7 {-2.60 pws Stockfish 14.1
64-bmi2} 16.Be2 exd4 17.O-O Bxd2 18.exd4 Kf8 19.Bf3 Rg8 20.Qh3 Rg6 21.Bxb7 Qxb7
22.Qa3+ Kg7 23.Qa8 Qxa8 24.Rxa8 Bf4 25.g3 Nc6 26.Rd1 Bd6) 16.Qg7 !! Rf8 17.Rd1 ?
(17.Qxf6 {-2.24 pws Stockfish 14.1 64-bmi2} exd4 18.Qf4 Na5 19.Rxa5 Bxd2+
20.Kxd2 Qxa5+ 21.Kc2 d3+ 22.Bxd3 cxd3+ 23.Kxd3 b4 24.Rd1 Rg8 25.Ke2 Ba6+ 26.Ke1
b3+ 27.Rd2) exd4 18.Qh6 ?? (18.Be2 {-3.84 pws Stockfish 14.1 64-bmi2} Ne7 19.Qg4
dxe3 20.fxe3 Rg8 21.Qf4 Rxg2 22.Kf1 Bxd2 23.Rxd2 Rxe2 24.Kxe2 Bxh1 25.Rd6 Qc7
26.Qxf6 Ng6 27.Kd2 Qe7 28.Kc3 Qxe3+ 29.Kb4) c3 19.bxc3 dxc3 20.Nb3 ? (20.f3
{-7.61 pws Stockfish 14.1 64-bmi2} cxd2+ 21.Kf2 Ke7 22.Rb1 Ba6 23.Be2 Rd8 24.Qf4
Bc5 25.Rhd1 Ne5 26.Ra1 Bb7 27.Ra2 Nd3+ 28.Bxd3 Rxd3 29.Ke2 Bxe3 30.Kxd3 Bxf4
31.Ke2 b4) c2+ 21.Rd2 Qc5 22.Nc1 !! Ke7

So i tried making GoK play with Stockfish in the playground
GoK decided to rage quit and crash the page

Thanks! Please always submit raw PGN data format, otherwise I cannot import it to lichess. I could reproduce half of the mistakes GoK did, the other ones not, as I was on a fast system with slightly better search depth. About running out of TurboWarp memory, this can happen on Difficult when you don't have too much physical memory (transposition table might grow a lot there). One workaround is to switch to Medium. Not much we can do in project code.

meonguy1 wrote:

ArnoHu wrote:

meonguy1 wrote:

1.d4 (1.e4 {+0.38 pws Stockfish 14.1 64-bmi2} c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Bf5
5.Ng3 Bg6 6.Nf3 Nf6 7.Bd3 e6 8.O-O Be7 9.Bxg6 hxg6 10.Qe2 Qc7 11.c4 O-O 12.Rd1
Nbd7 13.Ne4 Nxe4) Nf6 (1… d5 {+0.33 pws Stockfish 14.1 64-bmi2} 2.c4 e6 3.Nf3
Nf6 4.Nc3 Nbd7 5.Bf4 dxc4 6.e3 Nb6 7.Bxc4 Nxc4 8.Qa4+ c6 9.Qxc4 Nd5 10.O-O Nxf4
11.exf4 Be7 12.Ne5 O-O) 2.Nf3 ! d5 3.c4 e6 4.Nc3 dxc4 (4… Nbd7 {+0.25 pws
Stockfish 14.1 64-bmi2} 5.Bg5 Be7 6.cxd5 exd5 7.e3 c6 8.Bd3 h6 9.Bf4 Nh5 10.Be5
O-O 11.O-O g6 12.Kh1 Nxe5 13.Nxe5 Ng7 14.f4 Bf5) 5.Bg5 ?! (5.e3 {+0.28 pws
Stockfish 14.1 64-bmi2} a6 6.a4 c5 7.Bxc4 cxd4 8.exd4 Nc6 9.O-O Be7 10.h3 O-O
11.Re1 Qb6 12.Bb3 Rd8 13.Be3 h6 14.Rc1 Qa5 15.Qc2 Qh5 16.Qe2 Bd7 17.Bf4 Nb4
18.Rcd1) a6 6.e3 (6.e4 {-0.23 pws Stockfish 14.1 64-bmi2} b5 7.e5 h6 8.Bh4 g5
9.Nxg5 hxg5 10.Bxg5 Nbd7 11.exf6 Bb7 12.Be2 b4 13.Na4 Rg8 14.h4 Bxg2 15.Rg1 Bd5
16.Rc1 Nxf6 17.Kf1 Be7 18.Bxc4 Ne4 19.Bxe7 Rxg1+ 20.Kxg1) b5 7.a4 c6 8.axb5
(8.g3 {-0.47 pws Stockfish 14.1 64-bmi2} Bb7 9.Bg2 Nbd7 10.O-O Qb6 11.Bxf6 Nxf6
12.Ne5 Bd6 13.b3 cxb3 14.Qxb3 O-O 15.Nd3 g6 16.Rac1 b4 17.Ne4 Nxe4 18.Bxe4 a5
19.Nc5 Bc8 20.Rfd1 Rd8 21.Qc2) cxb5 9.Nxb5 ! axb5 10.Rxa8 Bb4+ 11.Nd2 Bb7
12.Bxf6 gxf6 13.Ra7 ?! (13.Ra1 {-0.91 pws Stockfish 14.1 64-bmi2} e5 14.Be2 exd4
15.O-O dxe3 16.Nxc4 Qxd1 17.Rfxd1 bxc4 18.fxe3 Bc5 19.Kf2 Ke7 20.Bxc4 Nd7 21.b4
Bb6 22.Bd5 Bxd5 23.Rxd5 Rb8 24.Rb5) Qb6 ! 14.Ra1 ! e5 15.Qg4 (15.dxe5 {-1.62 pws
Stockfish 14.1 64-bmi2} Ke7 16.Qc2 fxe5 17.Rd1 Rd8 18.Bxc4 bxc4 19.O-O Rg8 20.g3
Qc6 21.f3 Rd8 22.g4 Ke8 23.Ne4 Rxd1 24.Rxd1 Nd7 25.Nd2 Nc5 26.Nxc4 Qxf3 27.Nd6+
Kf8 28.Nxb7 Qxg4+ 29.Kh1 Nxb7) Nc6 ?! (15… Ke7 {-2.60 pws Stockfish 14.1
64-bmi2} 16.Be2 exd4 17.O-O Bxd2 18.exd4 Kf8 19.Bf3 Rg8 20.Qh3 Rg6 21.Bxb7 Qxb7
22.Qa3+ Kg7 23.Qa8 Qxa8 24.Rxa8 Bf4 25.g3 Nc6 26.Rd1 Bd6) 16.Qg7 !! Rf8 17.Rd1 ?
(17.Qxf6 {-2.24 pws Stockfish 14.1 64-bmi2} exd4 18.Qf4 Na5 19.Rxa5 Bxd2+
20.Kxd2 Qxa5+ 21.Kc2 d3+ 22.Bxd3 cxd3+ 23.Kxd3 b4 24.Rd1 Rg8 25.Ke2 Ba6+ 26.Ke1
b3+ 27.Rd2) exd4 18.Qh6 ?? (18.Be2 {-3.84 pws Stockfish 14.1 64-bmi2} Ne7 19.Qg4
dxe3 20.fxe3 Rg8 21.Qf4 Rxg2 22.Kf1 Bxd2 23.Rxd2 Rxe2 24.Kxe2 Bxh1 25.Rd6 Qc7
26.Qxf6 Ng6 27.Kd2 Qe7 28.Kc3 Qxe3+ 29.Kb4) c3 19.bxc3 dxc3 20.Nb3 ? (20.f3
{-7.61 pws Stockfish 14.1 64-bmi2} cxd2+ 21.Kf2 Ke7 22.Rb1 Ba6 23.Be2 Rd8 24.Qf4
Bc5 25.Rhd1 Ne5 26.Ra1 Bb7 27.Ra2 Nd3+ 28.Bxd3 Rxd3 29.Ke2 Bxe3 30.Kxd3 Bxf4
31.Ke2 b4) c2+ 21.Rd2 Qc5 22.Nc1 !! Ke7

So i tried making GoK play with Stockfish in the playground
GoK decided to rage quit and crash the page

Thanks! Please always submit raw PGN data format, otherwise I cannot import it to lichess. I could reproduce half of the mistakes GoK did, the other ones not, as I was on a fast system with slightly better search depth. About running out of TurboWarp memory, this can happen on Difficult when you don't have too much physical memory (transposition table might grow a lot there). One workaround is to switch to Medium. Not much we can do in project code.

on move 18. GoK chose Qh6?? i don't know if it was a bit flip or not.. since a second before GoK made the move. he chose Qh7?!

DubIeD wrote:

1. d2d4 e7e5 2. Bc1f4 Qd8f6 3. Bf4xe5 Qf6xe5 4. d4xe5 d7d5 5. Qd1xd5 Bc8f5 6. g2g4 Bf5xc2 7. Qd5xb7 Ke8d7 8. Qb7xa8 Nb8a6 9. Bf1g2 Bf8e7 10. Bg2c6 Kd7e6 11. f2f3 Ke6xe5 12. b2b3 Na6c5 13. Qa8xa7 Nc5xb3 14. Qa7xc7 Be7d6 15. h2h4 Bd6xc7 16. a2xb3 Bc2xb3 17. Ng1h3 Bb3c4 18. Ke1f1 Bc4xe2 19. Kf1e1 Be2xf3 20. Bc6xf3 Ke5d6 21. Nh3f4 Kd6e7 22. Nf4d5 Ke7d6 23. Ke1f2 Kd6c5 24. Rh1c1 Kc5b5 25. Rc1h1 f7f6 26. Nb1a3 Kb5a5 27. Nd5xc7 g7g5 28. h4xg5 Ng8e7 29. g5xf6 Ne7d5 30. Rh1h3 Nd5xc7 31. Ra1f1 Nc7d5 32. Bf3xd5 Rh8d8 33. f6f7 Rd8xd5 34. Rf1b1 Rd5d7 35. Na3c4 Ka5a6 36. Rb1b5 Rd7xf7 37. Rb5f5 Rf7xf5 38. g4xf5 h7h5 39. Rh3xh5 Ka6b7 40. Kf2e3 Kb7c6 41. Nc4d2 Kc6d6 42. Ke3f3 Kd6e7 43. Kf3e4 Ke7f6 44. Ke4d5 Kf6g7 45. Nd2b1 Kg7f8 46. Kd5e4 Kf8e7 47. Rh5h7 Ke7d6 48. f5f6 Kd6e6 49. Rh7f7 Ke6xf7 50. Ke4e5 Kf7g6 51. Ke5e6 Kg6g5 52. f6f7 Kg5f4 53. f7f8 Kf4e3 54. Ke6d7 Ke3d3 55. Kd7e6 Kd3c2 56. Nb1a3 Kc2b2 57. Qf8e8 Kb2xa3 58. Qe8d8 Ka3b4 59. Qd8c8 Kb4a5 60. Ke6d6 Ka5b5 61. Kd6d5 Kb5b4 62. Qc8d8 Kb4c3 63. Qd8e8 Kc3d3 64. Qe8c8 Kd3e3 65. Kd5c4 Ke3e4 66. Qc8f8 Ke4e5 67. Qf8h8 Ke5e6 68. Qh8f8 Ke6d7 69. Qf8a8 Kd7c7 70. Kc4d5 Kc7b6 71. Kd5d4 Kb6c7 72. Kd4e5 Kc7d7 73. Qa8h8 Kd7e7 74. Qh8c8 Ke7f7 75. Qc8h8 Kf7g6 76. Qh8a8 Kg6f7 77. Qa8h8 Kf7e7 78. Ke5f5 Ke7d6 79. Kf5e4 Kd6c5 80. Qh8a8 Kc5b6 81. Qa8f8 Kb6c7 82. Ke4d3 Kc7d7 83. Kd3e4 Kd7e6 84. Qf8d8 Ke6f7 85. Ke4d5 Kf7g7 86. Kd5e6 Kg7g6 87. Qd8b8 Kg6h7 88. Ke6e5 Kh7h6 89. Ke5f5 Kh6h5 90. Kf5e4 Kh5h4 91. Ke4e3 Kh4h3 92. Ke3e2 Kh3g2 93. Ke2e3 Kg2h1 94. Ke3e2 Kh1g2 95. Ke2e3 Kg2h3 96. Ke3f4 Kh3h4 97. Qb8c8 Kh4h5 98. Qc8e8 Kh5h6 99. Qe8b8 Kh6g6 100. Kf4g4 Kg6f6 101. Kg4f4 Kf6e7 102. Kf4e5 Ke7d7 103. Ke5d5 Kd7e7 104. Kd5d4 Ke7f6 105. Qb8a8

ArnoHu wrote:

The original idea behind this project was to build a simple chess game for a local kids programming club, and to create a tutorial about chess programming. The Scratch community then picked it up and provided additional ideas and feature requests, so the project kept on expanding in scope.

Today Chess - Game of Kings has three difficulty levels, and displays the progress of the current move calculation. Its move evaluation is based on board material, figure position, mobility and special endgame handling. It allows to take back moves, record games in algebraic notation, and to export or import boards. Of course the program supports all common chess rules, including pawn promotion, castling and en-passant, and has a small opening book included. Game experience / usability was another particular focus point.

Internally it uses a minimax / alpha-beta-pruning approach (usually ply 4 to 6, but up to ply 15 in endgame and on fast runtimes), with quiescence search and iterative deepening.

Maybe you want to give it a try at https://scratch.mit.edu/projects/148769358/. Feedback is very welcome, e.g. via project comments. Thank you!

sweetment wrote:

ArnoHu wrote:

The original idea behind this project was to build a simple chess game for a local kids programming club, and to create a tutorial about chess programming. The Scratch community then picked it up and provided additional ideas and feature requests, so the project kept on expanding in scope.

Today Chess - Game of Kings has three difficulty levels, and displays the progress of the current move calculation. Its move evaluation is based on board material, figure position, mobility and special endgame handling. It allows to take back moves, record games in algebraic notation, and to export or import boards. Of course the program supports all common chess rules, including pawn promotion, castling and en-passant, and has a small opening book included. Game experience / usability was another particular focus point.

Internally it uses a minimax / alpha-beta-pruning approach (usually ply 4 to 6, but up to ply 15 in endgame and on fast runtimes), with quiescence search and iterative deepening.

Maybe you want to give it a try at https://scratch.mit.edu/projects/148769358/. Feedback is very welcome, e.g. via project comments. Thank you!

very nice I love chess I mostly play standard or chess 960

ArnoHu wrote:

GoK (Scratch 3, Difficult) vs. Stockfish 14 level 5

GoK (white) wins this testgame on an average notebook in 38 moves: https://lichess.org/8XHtDjwb

move (55) steps

Grijfland wrote:

ArnoHu wrote:

GoK (Scratch 3, Difficult) vs. Stockfish 14 level 5

GoK (white) wins this testgame on an average notebook in 38 moves: https://lichess.org/8XHtDjwb

Arno, this result is very satisfying. Was this Stockfish 14.1 ? The Elo rating of levels 3 and 5 is unknown to me. 1500 and 1700 ?