Roller Coaster by Joseph Howard [Bonus]

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Roller Coaster by Joseph Howard

Theme: Primes Inside, Outside, and with a Square

Author/Opus: This is the 9th puzzle from guest contributor Joseph Howard.

Rules: Fill each cell with a digit from 1 to 9 (1 to 6 in example) so that no digit repeats in any row or column, and also draw a single, non-intersecting loop through some of the cells in the grid. The loop cannot pass through gray cells. Numbers on the outside of the grid show the sum of digits of ALL horizontal/vertical loop segments in that row/column in order. (Note: as in column 5 of the example, only segments that pass horizontally/vertically in a row/column appear as clues; the 5 in that column is not part of a vertical segment and is not represented by a clue). Not all outside clues are given, and unclued rows/columns can have any possible distribution of loop segments/sums.

Roller Cosaster Example by Serkan Yürekli

Answer String: Enter the digits in the 3rd row from left to right, followed by a comma, followed by the 9th row from left to right.

Time Standards (highlight to view): Grandmaster = 20:00, Master = 30:00, Expert = 1:00:00

Note: Follow this link for other less common Number Placement puzzles.

Statue Park by Joseph Howard

Statue Park by Joseph Howard

PDF

Theme: Symmetrical Corners

Author/Opus: This is the 8th puzzle from guest contributor Joseph Howard.

Rules: Standard Statue Park 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 = 9:00, Master = 12:00, Expert = 24:00

Note: Follow this link for other Statue Park Puzzles. If you are new to this puzzle type, here are our easiest Statue Parks to get started on.

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.

Snake Pit (Words) by Joseph Howard

Snake Pit by Joseph Howard

PDF

Theme: Snakes in a Bee Hive

Author/Opus: This is the 6th puzzle from guest contributor Joseph Howard.

Rules: Variation on Snake Pit (new rules in italics). Divide the grid along the boundary lines so that every cell belongs to a snake. A snake is a one-cell-wide path at least two cells long that does not touch itself, not even diagonally. Circled cells must be at one of the ends of a snake. A snake may contain one circled cell, two circled cells, or no circled cells at all. Each snake houses a word (given below the grid) with one letter in each cell. Some letters are given. Snakes of the same length cannot touch each other horizontally or vertically.

Also see this example:

Snake Pit

Answer String: Enter the letter placed in each cell in the marked rows from left to right, separating the two rows by a comma. Use CAPITAL LETTERS!

Time Standards (highlight to view): Grandmaster = 4:15, Master = 6:15, Expert = 12:30

Note: Follow this link for other Snake puzzles.

Statue Park by Joseph Howard

Statue Park by Joseph Howard

PDF

Theme: A Fairly Basic Puzzle

Author/Opus: This is the 5th puzzle from guest contributor Joseph Howard.

Rules: Standard Statue Park rules.

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

Time Standards (highlight to view): Grandmaster = 4:45, Master = 5:45, Expert = 11:30

Note: Follow this link for other Statue Park Puzzles. If you are new to this puzzle type, here are our easiest Statue Parks 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.

Spiral Galaxies by Joseph Howard

Spiral Galaxies by Joseph Howard

PDF

Theme: Logical

Author/Opus: This is the 3rd puzzle from guest contributor Joseph Howard.

Rules: Standard Spiral Galaxies rules.

Answer String: Enter the number of cells in each connected group (between bold lines) in the marked rows. Separate each row’s entry from the next with a comma.

Time Standards (highlight to view): Grandmaster = 2:45, Master = 3:45, Expert = 7:30

Note: Follow this link for classic Spiral Galaxies puzzles on this website and this link for variations on Spiral Galaxies puzzles. If you are new to this puzzle type, here are our easiest Spiral Galaxies Puzzles to get started on. More Spiral Galaxies puzzles will soon be found in The Art of Puzzles 2.