ILLEGAL: Q b2-a3 on turn 2:
There was no Q on b2. The piece on b2 is a R.
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For diagnostic purposes, here is the full movelist:
1. g3-g5 
1... d8-d6 // d6
2. Q b2-a3 
2... e8-e7 // e7
3. N i2-h4 
3... n b9-c7 // Nc7
4. N e2-d4 
4... b e9-f9; n-e9 // Be<=>N *Bishop Adjustment*
5. f3-f5 
5... b f9-d7 // Bd7
6. B-g2;R-f2 //Bishop adjust.
6... q i9-j8 // Qj8
7. N d4-f3 
7... n c7-b5 // Nb5
8. a3-b4 // Q b4
8... c8-c6 // c6
9. Q b4-f4 
9... n e9-c8 // Nc8
10. N f3-d4 
10... n b5-d4 // Nxd4
11. c3-d4 // p x p
11... b8-b7 // b7
12. d4-d5 // pd5
12... c6-c5 // c5
13. N h4-i6 
13... q j8-j6 // Qj6
14. h3-h5 
14... h8-h7 // h7
15. N i6-j4 
15... b c9-d8 // Bd8
16. B h2-g3 
16... b d8-a5 // Ba5+ check!
17. K d2-c1 
17... q j6-j10 // Qj10
18. f5-f6 // Thanks.  It was a very good trip.
18... r d9-a9 // Ra9
19. K c1-d1 
19... k-h9;r-g9 // O-Og
20. B g2-f3 
20... e7-f6 // exf6
21. Q f4-f6 
21... q j10-f6 // Qxf6
22. g5-f6 // p x q
22... b a5-d8 // Bd8
23. e3-e5 
23... d6-e5 // dxe5
24. B g3-e5 // B x P
24... r a9-a3 // Ra3
25. R c2-b2 
25... r g9-e9 // Re9
26. B e5-c3 
26... r a3-a1 // Ra1+ check!
27. K d1-c2 
27... r a1-i1 // Ri1
28. b3-b4 //seems I'm in trouble...
28... c5-b4 // cxb4
29. b2-b4 
29... r i1-i3 // Ri3
30. R b4-b7 
30... b d7-a4 
31. K c2-d2 
31... n c8-d6 
32. R b7-b4 
32... b a4-b5 
33. d2-c2 
33... b d8-a5 
34. R b4-b1 
34... b a5-c3 
35. K c2-c3 
35... r e9-e3 
36. B f3-e2 
36... n d6-e4 // Ne4+ check!
37. resign
In case there is a bug in the code, the settings file can be edited at /play/pbm/play.php?game=International+Contemporary+Random+Chess&settings=Alfaerie&submit=Edit