Tapa by Tom Collyer

Tapa by Tom Collyer

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the composite Yajilin mode where left click marks cells, right click marks dots in cells or X’s on edges, left click+drag draws lines.)

Theme: Singletons

Author/Opus: This is the 17th puzzle from our contributing puzzlemaster Tom Collyer.

Rules: Standard Tapa rules.

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 = 1:45, Master = 3:30, Expert = 7:00

Solution: PDF

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

Tapa by Grant Fikes

Tapa by Grant Fikes

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the composite Yajilin mode where left click marks cells, right click marks dots in cells or X’s on edges, left click+drag draws lines.)

Theme: Ones and Twos

Author/Opus: This is the 84th puzzle from our contributing puzzlemaster Grant Fikes.

Rules: Standard Tapa rules.

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 = 0:50, Master = 1:15, Expert = 2:30

Solution: PDF

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

Tapa (Triomino) by Prasanna Seshadri

Tapa (Trimino) by Prasanna Seshadri

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the composite Yajilin mode where left click marks cells, right click marks dots in cells or X’s on edges, left click+drag draws lines.)

Theme: Open Middle

Author/Opus: This is the 7th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Standard Tapa rules. Also, the entire Tapa must be made out of L triominoes, without overlapping. The L triominoes can be rotated.

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 with a comma.

Time Standards (highlight to view): Grandmaster = 4:30, Master = 6:30, Expert = 13:00

Solution: PDF

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

Tapa by Mystery Author

Tapa by Mystery Author

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the composite Yajilin mode where left click marks cells, right click marks dots in cells or X’s on edges, left click+drag draws lines.)

Theme: Fractional Sums (in three of the rows, treating the clues on the left as fractions and adding them together yields the integer on the right; eg 3/2+2/2+3/2 = 4)

Author/Opus: This is the 3rd puzzle from our new contributing puzzlemaster who will be identified later this week. [ETA: The author has been revealed as Prasanna Seshadri.]

Rules: Standard Tapa rules.

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 = 1:45, Master = 3:15, Expert = 6:30

Solution: PDF

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

Best of 2013: Shading Puzzles

Shading puzzles are amongst our favorite puzzles here at GMPuzzles. They are our most crowded category amongst non-Sudoku styles as we now regularly offer four puzzle styles in this genre. But this shouldn’t be a huge surprise; when you have the original designers of Tapa (Serkan Yürekli) and Cross the Streams (Grant Fikes) as contributors, you’re going to see a lot of shading puzzles.

Because of the crowded genre, and many high vote recipients (this is our most popular category!), we awarded six puzzles the “Best of” status for 2013.

While a bit of a novelty, the Tapa Group Think by Serkan Yürekli which we posted in September was definitely enjoyed by a number of solvers.

Tapa by Serkan Yürekli

The variation Tapa (Pentomino) from Dr. Sudoku also received a large number of votes in this category.

Tapa by Thomas Snyder

An absolutely spectacular Cross the Streams, Two Hard!, happened during Grant’s first week on the site. A lot of solvers gave it two thumbs up.

Cross The Streams by Grant Fikes

Nurikabe was the home to the most top ranked puzzles in this category, though. Tied for 2nd amongst the Nurikabe were the 72nd Prescription from April

Nurikabe by Thomas Snyder

and the Nurikabe Time puzzle from the second week of January which is the second “clock” theme to make the top of the listings.

Nurikabe Time by Thomas Snyder

But the winner of the category, with a few more votes than any other puzzle, was the “Crypt-Oceanography” variation written by Dr. Sudoku in May. Our test-solvers will remember well that this Nurikabe Cipher puzzle went through a few drafts before it was just right*.

Nurikabe by Thomas Snyder

You’ll find all of these excellent shading puzzles gathered together in this PDF.

* (That the world changed its four ocean model to a five ocean model in 2000 did not change the way Dr. Sudoku counts the oceans. Similarly, any planetary themed puzzles are still likely to include Pluto if it helps the logic.)

This is a Melon puzzle. (25 – Tapa)

Tapa by Palmer Mebane

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the composite Yajilin mode where left click marks cells, right click marks dots in cells or X’s on edges, left click+drag draws lines.)

Theme: Threes

Rules: Standard Tapa rules.

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 = 1:00, Master = 1:45, Expert = 3:30

Solution: PDF

This is a Melon puzzle. (14 – Tapa)

Tapa by Palmer Mebane

(View image directly for larger form.)

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the composite Yajilin mode where left click marks cells, right click marks dots in cells or X’s on edges, left click+drag draws lines.)

Theme: Logical

Rules: Standard Tapa rules.

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 = 8:30, Master = 14:00, Expert = 28:00

Solution: PDF

This is a Melon puzzle. (11 – Tapa)

Tapa by Palmer Mebane

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the composite Yajilin mode where left click marks cells, right click marks dots in cells or X’s on edges, left click+drag draws lines.)

Theme: Logical

Rules: Standard Tapa rules.

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 = 5:00, Master = 7:45, Expert = 15:30

Solution: PDF

Sunday Surprise #8 – Mystery Tapa

Today’s surprise originally comes from Hans van Stippent, with some edits by me (Thomas Snyder) to increase the challenge and rewards of the solve. Together, we present this creative “Mystery Tapa” where all the clues (any value from 1-8) have been replaced with ?’s.

Tapa by Hans van Stippent and Thomas Snyder

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the composite Yajilin mode where left click marks cells, right click marks dots in cells or X’s on edges, left click+drag draws lines.)

Theme: Clueless?

Rules: Variation of Tapa rules. All clue numbers (1 and above) have been replaced with question marks.

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 entry from the next with a comma. A double-digit number should have both digits entered.

Solution: PDF

The Puzzle Robot #11 – Tapa

Tapa by Serkan Yürekli

(view image directly for a larger format.)

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the composite Yajilin mode where left click marks cells, right click marks dots in cells or X’s on edges, left click+drag draws lines.)

Theme: Group Think

Rules: Standard Tapa rules.

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. A double-digit number should have both digits entered.

Time Standards (highlight to view): Grandmaster = 2:15, Master = 4:30, Expert = 9:00

Solution: PDF

Editorial Note: If you have been enjoying Serkan’s puzzles, you may want to try SudokuCup 10 this weekend where he has provided all the sudoku puzzles. And daily Tapa puzzles continue to be at Logic Masters India for the Classic Tapa Contest. Serkan is indeed the Puzzle Robot.