Don't Get Rooked

Problem Number: 
639
Type of Problem: 
Single Output Problem
Problem Category: 
Volume 6 (600-699)
Input: 
Random Input
0
0
Critical Input: 
Random Input: 
4 .X.. .... XX.. .... 2 XX .X 3 .X. X.X .X. 3 ... .XX .XX 4 .... .... .... .... 3 ... ... .XX 3 X.X X.X X.X 4 X.X. .X.X X.X. .X.X 4 .X.X X.X. .X.X X.X. 4 .... .... .... X.X. 0
Problem Description Link: 
https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=1…
Problem Id: 
639