JAPANESE MINESWEEPER

Classic Sappers show the number of mines located around the cell directly in it. In the Japanese version of the game, information about the placement of mines is located in the column and row headings of the puzzle field. More precisely, not mines, but cells in which they are not present! For example, the values 3 1 1 1 indicate that in a given row (column) first (not necessarily in the 1st cell!) there are 3 empty cells, then 3 more, but alternating with mined cells.

Thus, you solve the problem from the reverse: it finds the locations of empty cells without touching the mined ones. The logic provides for simultaneous analysis of the quantitative indicators of the column and row when determining the safety of a specific cell located at their intersection.