ILLEGAL: E h1-f4 on turn 5:
There was no E on h1. The piece on h1 is a N.
Go back with your browser's BACK button, reload the page, and try again.
For diagnostic purposes, here is the full movelist:
1. P e4-d4 
1... n b10-c8 
2. N b1-c3 
2... c b8-e8 // check!
3. K e2-f2 
3... g f10-g9 
4. P c4-b4 
4... r g10-f10 // check!
5. E h1-f4 
5... g g9-g8 
6. P b4-b5 
6... c h8-f8 // check!
7. E f4-c2 
7... c f8-f1 // discovered check!
8. C b3-f3 
8... c f1-c1 
9. R g1-g3 
9... c c1-i1 
10. G d1-d2 
10... c i1-i6 
11. P i4-h4 
11... p i7-h7 
12. P g4-g5 
12... g d10-d9 
13. P g5-g6 
13... c i6-a6 
14. E a1-c4 
14... r f10-f4 
15. P g6-g7 
15... g g8-g7 
16. R g3-g4 
16... r f4-g4 
17. P h4-g4 
17... e h10-f7 
18. P d4-e4 
18... n i10-h8 
19. C h3-h8 
19... g g7-h8 // (banzai)
20. G d2-d3 
20... r c10-i10 
21. P a4-a5 
21... c a6-a9 
22. G d3-d4 
22... e f7-d4 
23. P e4-d4 
23... r i10-i2 // check!
24. K f2-f1 
24... r i2-c2 
25. N c3-a4 
25... g h8-g7 
26. resign
In case there is a bug in the code, the settings file can be edited at /play/pbm/play.php?game=Korean+Random+Chess&settings=set1a&submit=Edit