August 31, 2017

Puzzle 129 (Symmetry Heyawake)

This is a Symmetry Heyawake puzzle.

Rules (from Grant Fikes's blog): In this Room and Reason [Heyawake] puzzle, a room with an S in it must have 180-degree rotational symmetry, and a room with an A in it must NOT have 180-degree rotational symmetry. The rules are otherwise unchanged.

Theme: All Clues


August 26, 2017

Puzzle 127 (Tapa)

This is a Tapa puzzle. This type was created by Serkan Yürekli.

Theme: Clue Symmetry and Logic


August 24, 2017

Puzzle 126 (Tapa)

This is a Tapa puzzle. This type was created by Serkan Yürekli.

Theme: Two By Two By Two By Two


August 22, 2017

Puzzle 125 (Tapa)

This is a Tapa puzzle. This type was created by Serkan Yürekli.

Theme: Singles and Doubles


August 12, 2017

Puzzle 124 (Right Face)

This is a Right Face puzzle. This type was created by Palmer Mebane.

Edit 6:27 PM, 8/12/17: Here is a new version that should hopefully be unique. Thanks Edderiofer!




August 1, 2017

Puzzle 119 (Lakes)

This is a Lakes puzzle. Rules (from LMI): 

Shade some of the cells so that the grid is divided into white areas. Each white area must contain exactly one number and that number must be the size of the white area it is included in. Cells with numbers cannot be shaded. 

Theme: 3


Inspired by this Thomas Snyder puzzle

July 25, 2017

July 20, 2017

Puzzle 114 (Panoramic Skyscrapers)

This is a Panoramic Skyscrapers puzzle. Standard Skyscrapers rules, except that clues are given between two rows or columns. These clues give the sum of the Skyscrapers clues of the two rows/columns they border.

I first saw this variation on the 2016 USPC written by Michael Rios; I'm unsure if it has been done elsewhere.

Theme: Clue Symmetry


May 26, 2017

Puzzle 110 (All Threes Slitherlink)

This is an All Threes Slitherlink puzzle. Rules (from Palmer Mebane's blog)This is a Slitherlink puzzle, with a twist. Every 3 in the puzzle is given to you. That is, if the solution has three segments around a single grid square, there is a 3 in that square.

Happy birthday, Grant Fikes!


February 16, 2017

Puzzle Ramayan + Puzzle 107 (Bosnian Snake)

I am the author of the second round of Puzzle Ramayan (Shading and Loops) being held on Logic Masters India this weekend. Here is a link: http://logicmastersindia.com/PR/201702/

This is a practice puzzle for Bosnian Snake.

Rules (from IB): Locate a snake (a 1 cell-wide single continuous path) in the grid whose head and tail are given. The snake does not touch itself, even diagonally. Numbers outside the grid indicate the number of snake cells in that row/column. Numbers inside the grid indicate how many of the 8 cells around it are used by the snake. (The O's mark the head and tail of the snake in this puzzle formatting; in the IB, they are marked by black circles.)