Pentominous (Radar) by Joseph Howard

Pentominous (Radar) by Joseph Howard

PDF

Theme: Square Numbers

Author/Opus: This is the 7th puzzle from guest contributor Joseph Howard.

Rules: Standard Pentominous rules. Additionally, there are some gray cells that do not contain any pentominoes. The numbers in these gray cells indicate how many pentomino regions are present in the 8 neighboring cells.

Answer String: Enter the letter associated with the pentomino occupying each cell in the marked columns from top to bottom, separating the two columns by a comma. Use CAPITAL LETTERS!

Time Standards (highlight to view): Grandmaster = 6:30, Master = 8:15, Expert = 16:30

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

Pentominous (Radar) by Joseph Howard

Pentominous (Radar) by Joseph Howard

PDF

Theme: Logical

Author/Opus: This is the 4th puzzle from guest contributor Joseph Howard.

Rules: Standard Pentominous rules. Additionally, there are some gray cells that do not contain any pentominoes. The numbers in these gray cells indicate how many pentomino regions are present in the 8 neighboring cells.

Answer String: Enter the letter associated with the pentomino occupying each cell in the marked row from left to right, followed by a comma, followed by the marked column from top to bottom. Use CAPITAL LETTERS!

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

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

Best of 2017: Region Division Puzzles

Here are our best Region Division puzzles of 2017, selected from the 42 web posts in this category (our second most frequent class of puzzle).

One of our theme weeks in 2017 was “Just One” with lots of puzzles using just the clue number 1. This Pentominous puzzle from Carl Worth was a very creative use of the just one rule, featuring the Roman numeral I, and was voted one of our best puzzles.

Pentominous by Carl Worth

Another of the top puzzles was this Fillomino variation by Murat Can Tonta that required symmetric regions.

Fillomino by Murat Can Tonta

Our best Region Division puzzle of 2017 came from a guest constructor who is now a regular US puzzle team member: Walker Anderson (link to his blog). Walker cracks the “best of” listings a few times this year for his contributions, and this Cave puzzle had a really incredible logical flow.

Cave by Walker Anderson

Pentominous (Borders) by Grant Fikes

Pentominous (Borders) by Grant Fikes

(View image directly for larger form.)

PDF

Theme: Logical

Author/Opus: This is the 249th puzzle from our contributing puzzlemaster Grant Fikes.

Rules: Variation of Pentominous rules. Divide this grid into 45 pentominoes each containing 5 cells. Pentominoes with the same shape (including rotations/reflections) cannot share an edge.
Some borders between pentominoes are already drawn.

Answer String: Enter the letter associated with the pentomino occupying each cell in the marked row from left to right, followed by a comma, followed by the marked column from top to bottom. Use CAPITAL LETTERS!

Time Standards (highlight to view): Grandmaster = 8:00, Master = 10:30, Expert = 21:00

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

Pentominous by Murat Can Tonta

Pentominous by Murat Can Tonta

PDF

Theme: 8 Symmetric Clues

Author/Opus: This is the 63rd puzzle from our contributing puzzlemaster Murat Can Tonta.

Rules: Standard Pentominous rules.

Answer String: Enter the letter associated with the pentomino occupying each cell in the marked row from left to right and then in the marked column from top to bottom, separating the groups with a comma. Use CAPITAL LETTERS!

Time Standards (highlight to view): Grandmaster = 1:30, Master = 2:15, Expert = 4:30

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

Pentominous by Carl Worth

Pentominous by Carl Worth

PDF

Theme: Just One (in Roman Numerals)

Author/Opus: This is the 20th puzzle from our contributing puzzlemaster Carl Worth.

Rules: Standard Pentominous rules.

Answer String: Enter the letter associated with the pentomino occupying each cell in the marked rows from left to right and in the marked columns from top to bottom, separating the groups with a comma. Use CAPITAL LETTERS!

Time Standards (highlight to view): Grandmaster = 5:45, Master = 7:45, Expert = 15:30

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

Best of 2016: Region Division Puzzles

Here are our best Region Division puzzles of 2016, selected from the 39 web posts in this category.

While we didn’t have as many guest contributions in 2016 as in earlier years with the site, there were still some stand-out puzzles from our guests including this magnificent Cave by Bryce Herdt with Fibonacci Spiral theme.

Cave by Bryce Herdt

Another Cave, this time a Diagonal variation from Prasanna Seshadri, also got top marks from many solvers.

Cave (Diagonal) by Prasanna Seshadri

Carl Worth demonstrated the quality that earned him a contributing puzzlemaster position this year with a tough Fillomino puzzle with a dominoes theme.

Fillomino by Carl Worth

The best Region Division puzzle this year though went to this combination of Pentominous and Star Battle by Grant Fikes that gave solvers a unique kind of logical challenge.

Pentominous (Star Battle) by Grant Fikes