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Evil · Puzzle #844
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"In science there is only physics; all the rest is stamp collecting." — Ernest Rutherford
"In science there is only physics; all the rest is stamp collecting." — Ernest Rutherford
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.