DescriptionGokigen-deduction for two numbers-v2.svg
English: Gokigen naname solving techniques for two numbers: adjacent middle 1s, adjacent middle 1s, edge 1 and 1 or 3, external pointed 2 and 1, external avoided 2 and 3, facing 2s both with either avoiding or pointig external line, middle 1s opposite in a cell.
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