: Learn to use existing numbers or signed numbers to simplify problems. As usual, if you are not sure how many numbers to fill in a certain empty space, you can refer to the parallel algorithm to use this pair style of numbers. 12. Convergence and push in the same direction 26182
: Fill in a number of numbers in simple fields to ensure balance with other rows and columns. For example, the identified figures could be adjusted to see if other figures could be used to fill the gaps.
: Using the common one-row, row-and-column solution, you can replace the non-eligible numbers with a trial-and-error strategy until you find the correct answer or try to find out which number in the row and column column paves the way.
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