ILLEGAL: o c8-b6 on turn 1:

There was no o on c8. The piece on c8 is a .cbw.

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For diagnostic purposes, here is the full movelist:

1. P e2-e4 
1... o c8-b6 
2. UN f1-d3 
2... p c7-c5 
3. O e1-e3 
3... p e7-e6 
4. .ND c1-b3 
4... un d8-e7 //check
5. P c2-c3 
5... p d7-d5 
6. P g2-g3 
6... p d5-d4 
7. P c3-d4 
7... d4-c3;p-d4 
8. O e3-f4 
8... dr b8-d8; .nw A8-b8 
9. DR d1-f1; A1-e1 
9... .nd h8-g6 
10. O f4-e2 
10... p c5-c4 
11. UN d3-c4 
11... nn e8-c4 
12. O e2-d4 
12... o b6-d4; B8-c8 
13. .ND b3-d4; B1-d1 
13... nn c4-a3 //check
14. K b1-c1 
14... dr d8-d4 
15. P b2-a3 
15... un e7-a3 //check
16. GRY a1-b2; C1-b1 
16... un a3-e5;C8-d8 //check
17. .NW e1-d3 
17... un e5-g1 
18. .NW d3-d4 
18... un g1-e5 
19. DR f1-c2 
19... gry f8-c7 
20. DR c2-b3; D1-f1 
20... gry c7-b3 
21. f1-D1; b3-c7; DR-b3; b3-c2; c7-f8; c2-f1; d2-d3 
21... un e5-d4 
22. .BW b1-c2 
22... un d4-c6;D8-e8 
23. DR f1-g6; D1-g1 
23... un c6-a2 //check
24. K c1-d2 
24... p f7-g6 
25. P f2-f4 
25... .bw d8-b6 
26. Q g1-b6 
26... .nw b8-c6;E8-b8 
27. .RF d1-a1 
27... .nw c6-b6 
28. .RF a1-a2; E1-c1 
28... .ne b8-a6 
29. .NE c1-e2 
29... gry f8-c7 
30. .NE e2-d4 
30... gry c7-d4 
31. P c3-d4 
31... .ne a6-b4 //check
32. K d2-e3 
32... .ne b4-a2; a F8-f8 
33. .BW c2-b1; F1-e1 
33... .ne a2-b4 
34. A e1-f2 
34... .ne b4-d5 //check
35. P e4-d5 
35... p e6-d5 //check
36. K e3-d2 
36... a f8-b4;G8-b8 //check
37. K d2-d1 
37... .nw b6-a4 
38. GRY b2-a1; G1-c1 
38... .nw a4-c3 //check
39. K d1-d2 
39... .nw c3-b1 //check
40. resign

In case there is a bug in the code, the settings file can be edited at /play/pbm/play.php?game=Universal+Chess&settings=asymmetric&submit=Edit