or solve online (using our beta test of Penpa-Edit tools. Use left click to place mine, right click (in cell) to mark unused, right click (on edge/corner) to mark a note; hitting tab will also enable a shading mode. If you want more solving options, turn off Penpa-Lite option.)
Theme: Clue Symmetry and Logic
Author/Opus: This is the 139th puzzle from our contributing puzzlemaster Serkan Yürekli.
Rules: Place a mine into some of the empty cells so that each number represents the total count of mines in neighboring cells, including diagonally adjacent cells. Also, an even number of mines must be placed in each row and in each column.
Answer String: Enter the length in cells of each group of consecutive cells with mines from left to right for the marked rows, starting at the top. Separate each row’s entry from the next with a comma.
Time Standards (highlight to view): Grandmaster = 10:30, Master = 15:00, Expert = 30:00