Sample:
Rules: Enter a number from 1 to 9 into each white cell. The numbers in grey cells indicate the sums of the numbers in the horizontally or vertically adjacent “words”. Within each word, no number can appear more than once.
Solution code: Enter the numbers in row 6 (with 7 digits) and column 7 (with 8 digits). Only enter 15 digits without any spaces or symbols.
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