ILLEGAL: L c1-g5 on turn 2:
There was no L on c1. The piece on c1 is a .CV.
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For diagnostic purposes, here is the full movelist:
1. P d2-d4 
1... p d7-d5 
2. L c1-g5 
2... .ne h8-g6 
3. L g5-d8 
3... r e8-d8 
4. P f2-f3 
4... l c8-f5 
5. A d1-f2 
5... _as_ro b8-d7 
6. P e2-e4 
6... l f5-c2 
7. A f2-g4; A1-c1 
7... l c2-a2; A8-e8 
8. A g4-d7 
8... .cbw e8-d7 
9. P b2-b3 
9... l a2-a5 
10. P e4-d5 
10... l a5-b6 
11. .NE h1-f2 
11... l b6-b1; B8-e8 
12. .CBW c1-b1 
12... .cbw d7-d5 
13. M f1-d2 
13... n e8-f6 
14. B1-d1; a1-b2 
14... p c7-c6 
15. N d1-e3 
15... .ne g6-f4 
16. N e3-d5 
16... .ne f4-d2; C8-e8 
17. N d5-e7 
17... k g8-h8 
18. .NE f2-d3 
18... .nd e8-e6 
19. .CBW b1-c1; C1-h1 
| 19... .ne d2-b2 
| 20. pass 
| // wait wait wait that thing move like dababa?
| // Whoops.  Sorry!
19... .ne d2-f3
In case there is a bug in the code, the settings file can be edited at /play/pbm/play.php?game=Universal+Chess&settings=Alfaerie&submit=Edit