PDF

or solve online (using our beta test of Penpa-Edit tools)

Theme: Clue Symmetry and Logic

Author/Opus: This is the 199th puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Place the twelve pentominoes into the grid, rotations and reflections allowed. Pentominoes cannot cover the numbered cells, and different pentomino shapes cannot be placed in adjacent cells that share an edge or corner. Numbered cells indicate how many of the surrounding cells (including diagonally adjacent cells) contain parts of the pentominoes.

Answer String: Enter the length in cells of each of the shaded segments 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 = 3:30, Master = 6:45, Expert = 13:30

Solution: PDF

Note: Follow this link for other puzzles involving Pentominoes.

PDF

or solve online (using our beta test of Penpa-Edit tools. Use left click to place 1 or 2 mines, 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: Symmetry and Logic (Note: this puzzle originally appeared in this year’s 24H Puzzle Championship.)

Author/Opus: This is the 45th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Place either 0, 1, or 2 mines into each empty cell so that each number represents the total count of mines in all neighboring cells, including diagonally adjacent cells. See also this example:

Answer String: For each cell in the marked columns, enter the number of mines (0, 1, 2) for each cell. Enter 0 if the cell is a number cell. Separate each column’s entry from the next with a comma. In the example (with marked rows), the answer is “022102,002000”.

Time Standards (highlight to view): Grandmaster = 6:00, Master = 9:30, Expert = 19:00

Solution: PDF

Note: Click here for other Double Minesweeper puzzles.

PDF

or solve online (using our beta test of Penpa-Edit tools. Use left click to place 1 or 2 mines, 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: Symmetry and Logic (Note: this puzzle originally appeared in this year’s 24H Puzzle Championship.)

Author/Opus: This is the 44th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Place either 0, 1, or 2 mines into each empty cell so that each number represents the total count of mines in all neighboring cells, including diagonally adjacent cells. See also this example:

Answer String: For each cell in the marked rows, enter the number of mines (0, 1, 2) for each cell. Enter 0 if the cell is a number cell. Separate each row’s entry from the next with a comma. In this example, the answer is “022102,002000”.

Time Standards (highlight to view): Grandmaster = 1:30, Master = 2:00, Expert = 4:00

Solution: PDF

Note: This is a bonus puzzle and is not tied to a normal weekly difficulty rating. Click here for other Double Minesweeper puzzles.

PDF

or solve online (using our beta test of Penpa-Edit tools. Use left click to place 1 or 2 mines, 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: Symmetry and Logic (Note: this puzzle originally appeared in this year’s Japan dakejanai Zukei dakejanai Puzzle Championship.)

Author/Opus: This is the 42nd puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Place either 0, 1, or 2 mines into each empty cell so that each number represents the total count of mines in all neighboring cells, including diagonally adjacent cells. See also this example:

Answer String: For each cell in the marked rows, enter the number of mines (0, 1, 2) for each cell. Enter 0 if the cell is a number cell. Separate each row’s entry from the next with a comma. In this example, the answer is “022102,002000”.

Time Standards (highlight to view): Grandmaster = 1:15, Master = 1:45, Expert = 3:30

Solution: PDF

Note: This is a bonus puzzle and is not tied to a normal weekly difficulty rating. Click here for other Double Minesweeper puzzles.

PDF

or solve online (using our beta test of Penpa-Edit tools. Use left click to place 1 or 2 mines, 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: Symmetry and Logic (Note: this puzzle originally appeared in this year’s Japan dakejanai Zukei dakejanai Puzzle Championship.)

Author/Opus: This is the 41st puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Place either 0, 1, or 2 mines into each empty cell so that each number represents the total count of mines in all neighboring cells, including diagonally adjacent cells. See also this example:

Answer String: For each cell in the marked rows, enter the number of mines (0, 1, 2) for each cell. Enter 0 if the cell is a number cell. Separate each row’s entry from the next with a comma. In this example, the answer is “022102,002000”.

Time Standards (highlight to view): Grandmaster = 1:20, Master = 2:00, Expert = 4:00

Solution: PDF

Note: This is a bonus puzzle and is probably harder than a usual Monday/Tuesday puzzle, particularly if you have not solved many Double Minesweeper puzzles.

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between ship placement and shading modes. In ship placement mode, right click gives sea, left click gives circle/square, left click and drag for rounded ships.)

This is a “Franken-Friday” puzzle variation.

Theme: All Mine

Rules: Variation of standard Battleships rules. Instead of exterior clues, clues inside the grid indicate the number of adjacent squares, including diagonally adjacent squares, containing ship segments. Ships do not sit on cells with numbers.

Answer String: For each row from top to bottom, enter the number of the first column from the left where a ship segment appears. If the row is empty, enter 0. Enter these numbers as a single string with no separators.

Time Standards (highlight to view): Grandmaster = 2:30, Master = 4:30, Expert = 9:00

Solution: PDF