Featured Puzzle – Hashi #4
Connect all of the numbered islands into a single group, using a series of bridges. No more than two bridges may connect any pair of islands.
Featured Puzzle – Invisible Sudoku #1
Can you solve a jigsaw sudoku puzzle with invisible walls? The sudoku part might be easy enough – fill in the grid with numbers and don’t repeat them in any row or column. However, you also can’t repeat them in an irregular region that you can’t see!
Featured Puzzle – Tetroid #1
Spring is coming, a time of renewal. So why not introduce a new puzzle? Today, we have Tetroid, a grid division puzzle. It’s a little like L.I.T.S., except that there are no predefined regions, and you’re using all 5 tetromino shapes.
Featured Puzzle: Battleships #1
Use the clues to locate the given fleet on the grid. Ships may not touch each other in any direction, including diagonally. However, they may be rotated. Any segments given are exactly the type shown. Number clues along the side and bottom of the grid indicate how many ship segments exist in that row or column.
Featured Puzzle: Battleships #2
Use the clues to locate the given fleet on the grid. Ships may not touch each other in any direction, including diagonally. However, they may be rotated. Any segments given are exactly the type shown. Number clues along the side and bottom of the grid indicate how many ship segments exist in that row or column.
Featured Puzzle: Bunnies & Trees #1 – Find the Easter Bunny
Happy Easter! Today we have a special treat. Rather than a traditional Easter egg hunt, we’re going to be playing hide and seek with the Easter Bunny and his friends!
Featured Puzzle: Bunnies & Trees #2
You’re a nature photographer, and today’s subject is bunny rabbits. Use the clues in the camera lenses to place one bunny and one tree in each row and column.
Featured Puzzle: Comparison Sudoku #1 (+ Windoku)
Oh no! The creatures in the grid have hidden all the numbers of this Sudoku puzzle! Fortunately, you still have some clues.
Featured Puzzle: Comparison Sudoku #2
Happy Baba Marta Day! This is a Bulgarian holiday to celebrate Grandmother Martha, the bringer of spring. Observers exchange and wear red and white tassels, called Martenitsas to guard against evil. Once the wearer has seen a stork or blossoming tree, they remove the Martenitsa and hang it from the tree.
Today’s puzzle, colored to resemble a Martenitsa, is Comparison Sudoku.
Featured Puzzle: Detective Chess #1
I first saw a Detective Chess puzzle about a year ago, and the concept intrigued me. Invented by Jaime Poniachik in the late 1970s or early 80s, and received notoriety in Martin Gardner’s Puzzles from Other Worlds, published in 1981. Today is International Chess Day, so this seemed an appropriate puzzle. Can you figure out which chess pieces goes where?