
5 0 0  2 3 0  8 6 7
0 8 0  9 0 0  0 0 2
2 0 0  8 0 0  0 0 0

0 0 1  0 9 0  2 5 0
0 2 7  3 6 5  1 0 0
0 0 5  1 8 2  3 7 0

0 0 2  0 0 3  0 8 1
6 0 8  0 1 9  0 2 0
1 4 0  0 2 8  0 0 5

xYwin piv@(7,1) (2,1) (9,3)
target: "3" @ (2,3)
*) use red block-pairs to eliminate digits
*) use Ywing to eliminate a 3 @ (2,3)
*) use LinkedPairs[3] to eliminate four 3's
*) flush/unique to finish
