ILLEGAL: q6 b8-b3 on turn 4:

There was no q6 on b8. The piece on b8 is a _jg_cigr.

Go back with your browser's BACK button, reload the page, and try again.

For diagnostic purposes, here is the full movelist:

1. P c2-c3 
1... .!cd h8-g6 
2. P f2-f4 
2... p f7-f5 
3. _AS_.ROB b1-f5 
3... _as_.rob d8-d2 
4. .!CD c1-b3 
4... q6 b8-b3 
5. q6 b3-b8;.!CD-b3 
5... _as_.rob d2-f7 
6. P h2-h4 
6... _jg_fi c8-d6 
7. d1-d7;d6-c8 
7... _as_.rob f7-d6 
8. d7-d5;d6-d8 
8... _jj_jg e8-e6 
9. _AS_.ROB f5-d3;S1-d2 //Check! (d3-c5-d7-f8)
9... _as_.rob d8-c6; S18-d7 
10. d5-b7;c6-d8;A1-c6 
10... ~fs~ a8-b7; A18-f3 
11. P h4-h5 
11... .!cd g6-g4; B18-h8; T18-f7 
12. .EW e1-g3 
12... _jg_fi c8-d6 
13. c6-d5;T1-c2 
13... _jj_jg e6-e4 
14. _AS_.ROB d3-b8;B1-d1 //d3-b4-a6-b8
14... ~fs~ b7-b8 
15. .EW g3-g4 
15... _jj_jg e4-g4 
16. P g2-g3 
16... _as_.rob d8-c6 
17. _JJ_JG g1-g2;C1-g1 //Check!
17... k f8-e8; C18-c8 
18. _JJ_JG g2-g4 
18... !aak c8-d1 
19. K a1-b1 
19... .ew g8-e6 
20. _JJ_JG g4-e6;U1-f2 //Check!
20... .np f7-e6; U18-f7 
21. !AAK g1-h8 
21... _jg_fi d6-c4 
22. K b1-c1 
22... !aak d1-c8 
23. _JG_FI h1-h2 
23... _as_.rob c6-a4 
24. .NP c2-d4;D1-a1;S2-c2 
24... .np e6-c5 
25. d5-d6 //25.AKc6?? ROBxb2#
25... se f7-d5; S17-f7; D18-f8 
26. P e2-e3 
26... .np c5-d4; E18-d8 
27. P e3-d4;E1-d1 
27... !aak c8-d1 
28. K c1-d1 
28... .ne d8-f6 
29. SE f2-e3;T2-f2 
29... k1 f3-e2 
30. ~FS~ f1-g2 //Anti-Check!
30... k1 e2-d3 
31. !AAK h8-g1 
31... x d7-f5; T17-d7 
32. P h5-h6 
32... se d5-d4 
33. !AAK g1-f8 
33... se d4-c3; F18-a8 
34. P b2-c3;F1-b1;U2-b2 
34... p g7-h6; U17-g7 
35. !AAK f8-g1 
35... x f5-e4 
36. ~FS~ g2-f3 
36... x e4-e3 
37. !FFP f2-e3 
37... .ne f6-d5 
38. ~FS~ f3-e4;G1-e1 
38... _as_.rob a4-e4; G18-g8 
39. _JG_FI h2-f1;S3-h2 
39... !a g8-g6 
40. !FFP e3-f3 
40... _as_.rob e4-f6;  S16-b7 
41. K d1-c1 
41... _cbj_nl1 a8-b6 
42. !AAK g1-b6 
42... p c7-b6 
43. d6-c7 
43... p a7-a5 
44. P a2-a4;T3-a2;H1-g1 
44... p e7-e5; T16-e7; H18-f8 
45. !FFP f3-e3 
45... ~fs~ b8-a7 
46. c7-c6 
46... !ffp d7-d6 
47. c6-c5 
47... p b6-b5 
48. ~P a2-a3;U3-a2 
48... p b5-a4 
49. ~P a3-a4 
49... _as_.rob f6-a4; I18-g8; U16-d7 
50. _JG_FI f1-f2;I1-d1 
50... .nd g8-f6 
51. _CBJ_NL1 b1-a3 
51... _jg_fi c4-a3 
52. SD b2-a3 
52... .jp d7-c4 
53. P f4-f5;J1-b1;S4-b2 
53... .jp c4-b3 
54. .JP a2-b3 
54... _as_.rob a4-b6; J18-g8 
55. P f5-g6 
55... 1bi g8-f2; S15-d7 
56. P g6-f7 //Check!
56... ~fo~ f8-f7 
57. 1BI b1-a7 
57... _as_.rob b6-a7 
58. ~FO~ g1-f2 
58... _as_.rob a7-a3; K18-c8 
59. .ND d1-b1;K1-f1;T4-a2 
59... _as_.rob a3-a7; T15-c7 
60. !FFP e3-f3 
60... _as_.rob a7-b8 
61. .ND b1-a3 
61... p a5-a4; L18-a8 
62. .JP b3-e4;L1-d1 
62... .ne d5-b6 
63. c5-d5 
63... _jg_2nw a8-a7 
64. CP a2-a4;U4-a2 
64... cp c7-a5 
65. CP a4-b5 
65... .ne b6-a4; U15-c7 
66. .ND a3-c4 
66... _jg_2nw a7-b5; M18-a8 
67. .ND c4-a4 
67... _jg_2nw b5-a4 
68. d5-e6;M1-b1 
68... _jj_lwm c8-c5 
69. ~FO~ f2-c5 
69... _jg_2nw a4-c5 
70. QP a2-b3 
70... cp a5-a4 
71. !A e1-e3 
71... k1 d3-d4 
72. _JG_2NW d1-d3 //d1-f2-d3
72... _jg_2nw c5-d3 
73. APP c2-d3 
73... ~fo~ f7-h5; N18-c8 
74. =P h2-h4 
74... _as_.rob b8-c6 
75. _JJ_LWM f1-f2;N1-e1 
75... !ffp d6-d5 
76. _JJ_LWM f2-f5 
76... ~fo~ h5-g6 
77. _JJ_LWM f5-e5 
77... resign

In case there is a bug in the code, the settings file can be edited at /play/pbm/play.php?game=UC-170-13&settings=Asymmetric&submit=Edit