 1 2 4 0 5 0
 0 1 4 0 6 6
 5 4 2 3 0 0
 0 4 5 4 2 0
 1 5 0 0 6 1
 6 4 3 0 4 0
 5 1 4 3 0 0
 6 0 4 6 4 0
 1 5 3 0 0 2
 5 2 0 4 0 1
 6 2 0 0 2 6
 0 2 0 1 5 5
 5 4 2 1 0 0
 0 3 0 2 1 6
 1 6 6 0 1 0
 6 4 0 3 0 6
 1 2 2 0 3 0
 3 0 2 3 0 5
 1 3 6 0 0 3
 2 1 0 2 0 1
 4 3 0 0 2 2
 4 5 2 0 1 0
 4 1 2 1 0 0
 1 2 0 0 3 1
 0 5 6 0 3 6
 5 0 0 4 2 5
 4 4 5 0 6 0
 0 1 1 0 5 4
 0 6 4 0 3 3
 1 2 2 0 0 6
 6 3 2 0 6 0
 6 2 0 5 2 0
 1 3 2 0 0 6
 2 0 5 2 3 0
 0 2 0 6 1 1
 2 0 0 1 4 1
 0 5 6 0 1 4
 3 0 4 5 0 4
 1 6 2 0 6 0
 4 1 0 0 6 6
 1 0 5 5 0 1
 5 0 4 3 0 2
 4 2 0 6 0 4
 0 0 1 3 6 4
 0 2 0 5 4 4
 3 0 0 3 1 4
 6 0 3 3 0 3
 3 2 6 2 0 0
 5 4 3 0 1 0
 0 3 6 0 5 5
 5 0 3 2 0 6
 5 1 0 0 1 3
 4 6 0 4 0 6
 2 0 3 1 6 0
 0 6 3 6 1 0
 5 4 0 4 0 6
 6 5 6 2 0 0
 5 0 0 5 5 1
 4 0 3 0 3 4
 6 3 0 4 0 2
 0 0 0 0 0 0     Player's guess    
 0 0 0 0 0 0     Player's guess (working copy)
 0 0 0 0 0 0     Puzzle's Answer (working copy)
 Time                              

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To modify the answers, simply assign four numbers (1 thru 6) to four of the six avaliable digits of the answer.  Two must be assigned a "0".  The game operates on the premise that the answer has only 4 assigned colors (fillers or values).

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