ترفند و روش حل سودوکو Solitaire Sudoku

Rules: Normal Sudoku rules apply. In each column, any cage of N2 cells must contain a run of N consecutive digits sorted in descending order, starting from the top. Negative constraints apply, e.g. 8 cannot be immediately above 7 unless both cells are in the same cage. https://app.crackingthecryptic.com/sudoku/qNDr3fhnBJ