Negative Tetromino by Serkan Yürekli

Negative Tetromino by Serkan Yürekli

PDF

Theme: Words

Author/Opus: This is the 36th puzzle from our contributing puzzlemaster Serkan Yürekli.

Rules: Divide the white cells into tetrominoes so that no two regions sharing an edge are the same tetromino (L, I, O, S, or T considering rotation and reflection). Regions may contain at most 1 cell with given letters; regions with such a cell CANNOT have the same tetromino shape as any of the letters in that cell. Also, see this example:

Negative Tetromino by Serkan Yürekli

Answer String: Enter the letter of the tetromino region for each cell in the two marked rows from left to right, separating the rows with a comma. Use CAPITAL LETTERS for L, I, O, S, and T.

Time Standards (highlight to view): Grandmaster = 1:15, Master = 2:30, Expert = 5:00

Sudoku by Thomas Snyder

Sudoku by Thomas Snyder

PDF

Theme: Desperately Seeking Seven (Note: the shading of the “7″ shaped region is just for artistic purposes.)

Author/Opus: This is the 173rd puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard Sudoku rules (no repeats in any rows, columns, or bold regions). The digit range is 1-7.

Answer String: Enter the 2nd row from left to right, followed by a comma, followed by the 5th row from left to right.

Time Standards (highlight to view): Grandmaster = 1:15, Master = 2:00, Expert = 4:00

Note: Follow this link for other classic Sudoku. If you are new to this puzzle type, here are our easiest Sudoku to get started on.

Schedule for Next Week

All the puzzles from last week’s Fillomino focus have been grouped in this PDF. A few extra bonuses from Grant Fikes — who crossed 100 contributions this week — were posted on Patreon for everyone. There is a bonus LITS-Fillomino and a bonus “talkthrough” by Grant for Prasanna’s Checkered Fillomino (with an unorthodox approach to solving the style). Our patrons get bonuses like this every week.

Next week will be another variety week with these puzzles (highlight to view):
Monday: Sudoku by Thomas Snyder
Tuesday: Negative Tetromino by Serkan Yürekli
Wednesday: Masyu by Thomas Snyder
Thursday: Tapa by Serkan Yürekli
Friday: Star Battle by Thomas Snyder
Saturday: Ripple Effect by Grant Fikes

The bonus puzzle for our Expert and above patrons will be a 13×13 Nurikabe by Prasanna Seshadri.

Fillomino (Checkered) by Prasanna Seshadri

Fillomino by Prasanna Seshadri

PDF

Theme: Clue Symmetry and Logic

Author/Opus: This is the 21st puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Standard Fillomino rules. Also, it must be possible to shade some polyominoes black so that no bordering polyominoes are the same color (in other words, the grid must allow a two-color shading). Also, see this example:

Fillomino (Checkered) example by Thomas Snyder

Answer String: For each cell in the marked rows/columns, enter the area of the polyomino it belongs to. Enter just the last digit for any two-digit number. Start with the 2nd row, followed by a comma, followed by the 7th column.

Time Standards (highlight to view): Grandmaster = 4:30, Master = 8:00, Expert = 16:00

Note: Follow this link for other classic Fillomino and this link for more variations on Fillomino puzzles. If you are new to this puzzle type, here are our easiest Fillomino puzzles to get started on.

Fillomino (Anti-Queen) by Prasanna Seshadri

Fillomino by Prasanna Seshadri

PDF

Theme: Clue Symmetry and Logic

Author/Opus: This is the 20th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Standard Fillomino rules. Also, all “1″ polyominoes should be treated like queens in chess; no two queens (“1s”) can see each other in any row, column, or diagonal as shown in this image.

Fillomino (Anti-Queen) image

Answer String: For each cell in the marked rows/columns, enter the area of the polyomino it belongs to. Enter just the last digit for any two-digit number. Start with the 4th column, followed by a comma, followed by the 8th column.

Time Standards (highlight to view): Grandmaster = 3:00, Master = 5:00, Expert = 10:00

Note: Follow this link for other classic Fillomino and this link for more variations on Fillomino puzzles. If you are new to this puzzle type, here are our easiest Fillomino puzzles to get started on.

Fillomino (Nonconsecutive) by Grant Fikes

Fillomino by Grant Fikes

PDF

Theme: Clue Symmetry and Logic

Author/Opus: This is the 100th puzzle from our contributing puzzlemaster Grant Fikes! To celebrate we’ve added a bonus Fillomino-LITS puzzle on Patreon for all solvers to enjoy.

Rules: Standard Fillomino rules. Also, no polyominoes that differ by one in size can share an edge.

Answer String: For each cell in the marked rows/columns, enter the area of the polyomino it belongs to. Enter just the last digit for any two-digit number. Start with the 3rd row, followed by a comma, followed by the 5th row.

Time Standards (highlight to view): Grandmaster = 2:45, Master = 4:00, Expert = 8:00

Note: Follow this link for other classic Fillomino and this link for more variations on Fillomino puzzles. If you are new to this puzzle type, here are our easiest Fillomino puzzles to get started on.

Fillomino by Grant Fikes

Fillomino by Grant Fikes

PDF

Theme: Clue Symmetry and Logic

Author/Opus: This is the 99th puzzle from our contributing puzzlemaster Grant Fikes.

Rules: Standard Fillomino rules.

Answer String: For each cell in the marked rows/columns, enter the area of the polyomino it belongs to. Enter just the last digit for any two-digit number. Start with the 4th column, followed by a comma, followed by the 7th column.

Time Standards (highlight to view): Grandmaster = 2:30, Master = 3:30, Expert = 7:00

Note: Follow this link for other classic Fillomino. If you are new to this puzzle type, here are our easiest Fillomino puzzles to get started on.