

/* Tests
sudoku0([
[1,2,3,  4,5,6,  7,8,9],
[4,5,6,  8,9,7,  1,2,3],
[7,8,9,  1,2,3,  4,5,6],
[2,6,1,  3,7,4,  8,9,5],
[9,7,5,  2,1,8,  6,3,4],
[8,3,4,  5,6,9,  2,1,7],
[3,1,7,  6,8,5,  9,4,2],
[5,9,2,  7,4,1,  3,6,8],
[6,4,8,  9,3,2,  5,7,1]
]).

sudoku0([
     [A1,A2,A3,  A4,A5,A6,  A7,A8,A9],
     [B1,B2,B3,  B4,B5,B6,  B7,B8,B9],
     [C1,C2,C3,  C4,C5,C6,  C7,C8,C9],
     [D1,D2,D3,  D4,D5,D6,  D7,D8,D9],
     [E1,E2,E3,  E4,E5,E6,  E7,E8,E9],
     [F1,F2,F3,  F4,F5,F6,  F7,F8,F9],
     [G1,G2,G3,  G4,G5,G6,  G7,G8,G9],
     [H1,H2,H3,  H4,H5,H6,  H7,H8,H9],
     [I1,I2,I3,  I4,I5,I6,  I7,I8,I9]
     ]).

sudoku0([
     [2,A2,A3,  A4,A5,1,   A7,3,A9],
     [B1,3,B3,  B4,B5,B6,  B7,B8,B9],
     [C1,C2,4,  C4,3,C6,   C7,6,8],
     [D1,D2,D3, D4,D5,D6,  D7,D8,4],
     [1,E2,E3,  2,E5,E6,   8,E8,E9],
     [F1,9,F3,  F4,F5,7,   F7,5,F9],
     [7,G2,5,   G4,G5,G6,  G7,G8,G9],
     [H1,H2,H3, H4,4,H6,   9,H8,H9],
     [I1,I2,6,  I4,1,8,    4,I8,I9]
     ]).

*/
