ILLEGAL: N e1-d3 on turn 5:
There was no N on e1. The piece on e1 is a R.
Go back with your browser's BACK button, reload the page, and try again.
For diagnostic purposes, here is the full movelist:
1. P g2-g3 
1... p c7-c6 
2. P c2-c4 
2... p g7-g6 
3. P e2-e3 
3... p d7-d6 
4. P d2-d4 
4... b e8-d7 
5. N e1-d3 
5... p h7-h5 
6. Q f1-e1 
6... p e7-e5 
7. P d4-e5 
7... p d6-e5 
8. C c1-b3 
8... c c8-b6 
9. P e3-e4
In case there is a bug in the code, the settings file can be edited at /play/pbm/play.php?game=Cetina+Random+Chess&settings=asymmetric&submit=Edit