-- KNIGHTSOLS
    
    [(1,1,1),(2,3,2),(3,5,3)]
<+> [(1,1,1),(2,3,2),(3,1,3)]
<+> [(1,1,1),(2,3,2),(1,5,3)]
<+> [(1,1,1),(2,3,2),(4,4,3)]
<+> [(1,1,1),(2,3,2),(4,2,3)]
<+> [(1,1,1),(3,2,2),(4,4,3)]
<+> [(1,1,1),(3,2,2),(2,4,3)]
<+> [(1,1,1),(3,2,2),(5,3,3)]
<+> [(1,1,1),(3,2,2),(1,3,3)]