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Expert · Puzzle #222
2
9
7
1
2
3
1
6
6
4
5
1
3
4
5
2
6
9
2
5
6
8
7
5
"The combination player thinks forward; he starts from the given position and tries to find the conclusion of the combination." — Emanuel Lasker
"The combination player thinks forward; he starts from the given position and tries to find the conclusion of the combination." — Emanuel Lasker
X-Wing: if a digit appears in exactly two cells in two rows, and those cells share the same two columns, eliminate that digit from those columns elsewhere.
X-Wing: if a digit appears in exactly two cells in two rows, and those cells share the same two columns, eliminate that digit from those columns elsewhere.