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Interactive diagrams. (Updated!) Diagrams that interactively show piece moves.[All Comments] [Add Comment or Rating]
A. M. DeWitt wrote on Mon, Feb 27, 2023 11:13 PM UTC:

This time I made it so you can toggle between the two movesets I am considering for the Shima (more test cases basically). The bug seems to only occur when the AI makes a zigzag pair of forward jump captures.

  • Original Shima (KaK): 1. Ca3 cd6 2. Cf3 Ce4 3. cd3 Cc5 4. Sb3 Cc6 5. hg3 Cg4 6. de3 h6 7. h3 Cc6 8. d4 Ce6 9. c3 b6 10. Sb4 a5 11. Sb5 Cc7 12. Gd2 Cxb5=S 13. Cxb5=S a6 14. Sc4 Gb7 15. Gg2 de6 16. b3 Sb6 17. Ch2 Kd8 18. Cg4 hg6 19. Cxc6 Gxc6 20. Sxa5 b5 21. Sa3 Rxa3=S 22. Rxa3=S f6 23. a4 Ge7 24. axc6 Sxc6 25. g4 d5 26. Ge3 e6 27. f3 Sb6 28. Sb4 Sc6 29. de4 Sc4 30. Gd3 gf5 31. Gxc4=S f5xg4xf1=G
  • Multi-capturing Shima (Kmca(b)1K): {2053676357} 1. Ca3 cd6 2. Cf3 Ce4 3. cd3 Cc5 4. Sb3 Cc6 5. hg3 Cg4 6. Cc2 Cf6 7. Cb4 Cxb4 8. Sxb4xb3 Gg8 9. Cg5 de6 10. bc3 ef6 11. Ce4 Cxe4 12. d3xe4xd7

The last move of each only captures one of the victims it intended to capture. It appears that this bug is a niche case.

Edit: The AI has also gone completely out of whack. It will only move the black pieces as of right now.

KaK

files=8 ranks=8 holdingsType=1 promoChoice=*R*G*CP stalemate=win graphicsDir=../membergraphics/MSyangsi/ whitePrefix=w blackPrefix=b lightShade=#FFCC9C darkShade=#CF8948 graphicsType=png?nocache=true squareSize=50 symmetry=mirror firstRank=1 borders=0 rimColor=#000000 coordColor=#FFFFFF newClick=1 pawn::mfFcaf(macaf)3F:pawn:a2-h2 cavalier::N0:knight:b1,g1 general::FsW:bishop:c1,f1 chariot:R:R:rook:a1,h1 shima::KaK:queen:d1 king:K:K:king:e1