Dr. Sudoku Prescribes #75 – Fillomino

Fillomino by Thomas Snyder

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between a composite mode for line/edge drawing and a number entry mode.)

Theme: Tornado

Rules: Standard Fillomino rules.

Answer String: For each cell in the marked rows/columns, enter the area of the polyomino it belongs to. Start with the 6th row, followed by a comma, followed by the 10th column.

Time Standards (highlight to view): Grandmaster = 5:00, Master = 8:00, Expert = 16:00

Solution: PDF

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.

Dr. Sudoku Prescribes #74 – Slitherlink

Slitherlink by Thomas Snyder

PDF

or solve online (using our beta test of Penpa-Edit tools in edgex mode where left click+drag draws lines and right click marks X’s)

Theme: Two Fields

Rules: Standard Slitherlink rules.

Answer String: Enter the length in cells of each of the internal loop segments from left to right for the marked rows, starting at the top. Separate each row’s entry with a comma.

Time Standards (highlight to view): Grandmaster = 2:00, Master = 3:00, Expert = 6:00

Solution: PDF

Dr. Sudoku Prescribes #73 – TomTom

TomTom by Thomas Snyder

PDF

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

Theme: Tetrominoes

Rules: Standard TomTom rules.

Answer String: Enter the 1st row from left to right, followed by a comma, followed by the 2nd row from left to right.

Time Standards (highlight to view): Grandmaster = 1:45, Master = 2:45, Expert = 5:30

Solution: PDF

Ask Dr. Sudoku #13 – Puzzle Hunting

A few weeks ago Giovanni P. asked what our visitors might think about “other puzzles.” His question was specific to word puzzles, but this week I put the question to the test when I posted our first “Puzzle Hunt” puzzle. The Monday puzzle was not announced as such. Instead it was meant to just look like an April Fools joke. But it already has the most FAVEs of any puzzle on the site. So what are “Puzzle Hunt” puzzles and what was really going on with that word search?

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Dr. Sudoku Prescribes #72 – Nurikabe

Nurikabe by Thomas Snyder

PDF

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

Theme: Our 72nd prescription. But who’s counting?

Rules: Standard Nurikabe rules.

Answer String: Enter the length in cells of each of the black segments (the unnumbered, connected “ocean”) 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 = 7:30, Master = 10:30, Expert = 21:00

Solution: PDF

Dr. Sudoku Prescribes #71 – Cave (Product)

Cave by Thomas Snyder

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the linex mode where left click+drag draws lines and right click marks X’s)

This is a “Franken-Friday” puzzle variation.

Theme: Common Products

Rules: Variation of Cave rules. Each clue represents the product of the # of row cells visible (including the cell itself) with the # of column cells visible (including the cell itself).

Answer String: Enter the length in cells of each of the cave segments from left to right for the marked rows, starting at the top. Separate each row’s entry with a comma.

Time Standards (highlight to view): Grandmaster = 3:00, Master = 4:45, Expert = 9:30

Solution: PDF

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

Dr. Sudoku Prescribes #70 – Battleships

Battleships by Thomas Snyder

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.)

Theme: Today’s date, which is featured twice in the clues

Rules: Standard Battleships rules.

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 = 2:00, Master = 3:00, Expert = 6:00

Solution: PDF

Dr. Sudoku Prescribes #69 – Skyscrapers (Sum)

Sum Skyscrapers by Thomas Snyder

PDF

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

This is a “Twisted Tuesday” puzzle variation.

Theme: Arithmetic Series

Rules: Variant of Skyscrapers rules. The numbers outside the grid represent the sum of the buildings seen in that row or column. For example, if a row is 12534, the clue from the left would be an 8 (1+2+5) and from the right would be a 9 (4+5).

Answer String: Enter the 3rd row from left to right, followed by a comma, followed by the 5th row from left to right.

Time Standards (highlight to view): Grandmaster = 1:30, Master = 2:45, Expert = 5:30

Solution: PDF

Dr. Sudoku Prescribes #68 – Word Search

Word Search by Thomas Snyder

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between a line drawing mode and a shading mode.)

Theme: Grandmasters

Rules: Standard Word Search rules.

Answer String: Enter the final message, related to what you are getting today, revealed by solving the puzzle. Enter the answer in all capital letters, with no spaces or punctuation.

Time Standards (highlight to view): Grandmaster = 8:30, Master = 11:30, Expert = 23:00

Solution: PDF

Doctor’s Note – Week 13

Last week saw the release of Puzzlecraft: The Ultimate Guide on How to Construct Every Kind of Puzzle, a really incredible project with Mike Selinker that was an extension of our GAMES Magazine articles that have run for many years (I joined Mike around article #48 when he wanted to write on how to construct Battleships. I’ve been part of the process ever since as we now approach #100). The title seems overly broad, but I challenge anyone to come up with a puzzle style that isn’t covered in the book.

Last week also saw Mike and I finish construction on a book you’ll get to see next year, Tile Crosswords, a word puzzle style that we developed out of the logic puzzle “Crack-It-On” that first appeared at the WPC in Hungary in the late 90s. You might not picture me as someone who fills grids with letters that have a meaning when considered as intact strings, let alone then provides sets of letters outside the grid that also form strings that evoke the sets of letters that are in the grid — certainly if I write about making word grids and cluing them that way it would seem impossible that I even speak English — but it is something I’ve been increasingly finding joy in doing.

The reason I mention all this is to give you some forewarning that over the coming months we may have other puzzle types than just sudoku and abstract logic puzzles here. Just as with the Hidden Contest that ended last week, I intend Grandmaster Puzzles to have all the kinds of puzzles I would like to solve, but with a friendly mix of easy to hard and lots of different genres so that if today is not your cup of tea, then tomorrow probably is. You may only think of me as a logic puzzle constructor, but working with Mike over the last few years has really developed my puzzle-making chops in almost every area.

Whatever puzzles we release here, they should still be worthy in their genres of being called masterpieces.

Sincerely,
Dr. S