Featured Puzzle: Fillomino #2
Fillomino is a popular Japanese puzzle. Divide the grid into polyomino regions that each contain a single number, ranging from 1-9.
Featured Puzzle: Flower Sudoku #1
One common Christmas decoration, especially in the southern United States, is the poinsettia flower. In honor of that, today’s puzzle is Flower Sudoku. This is five overlapping Sudoku grids, in which the central grid is completely covered by the four outer grids.
Featured Puzzle: Foil the Gunpowder Plot!
The Royal Guard has discovered Guy Fawkes skulking around in the cellars beneath the House of Lords. He has confessed to a wicked plot, but we must still find the gunpowder with which the plan was to be carried out!
Featured Puzzle: From 1 to X #1
Fill in the grid with numbers from 1 to X, where X is the size of the region. You can’t repeat digits within a region, or in orthogonally adjacent cells. Numbers outside the grid are the sum of digits in that row or column.
Featured Puzzle: Futoshiki #1 – Secret Santa
You’re the coordinator for this year’s Secret Santa party. Each of your seven guests brought a present for each of the others. You mixed in the gifts from you, and arranged them in a neat grid, with one present for each guest in each row and column. No idea why – you just liked the arrangement. But then the labels fell off of most of them! Fortunately, you were able to remember a bit about how they were arranged. Can you deduce the rest of the labels?
Featured Puzzle: Futoshiki #2
In Futoshiki, your goal is to fill the grid with numbers from 1-7, without repeating a digit in any row or column. Inequality symbols between cells always point to the smaller number.
Featured Puzzle: Gemini Sudoku #1
In Gemini Sudoku, you’re given a pair of Sudoku grids. The grid on the right works like a cipher for the grid on the left. Wherever a digit appears in the left grid, it maps to a specific digit in the same position in the right grid. For example 4 in the left grid might map to a 6 in the right grid. This means that for every 4 you discover on the left, you can place a 6 in the same position on the right.
Featured Puzzle: Grid Ten #1 – National Bean Counter Day
Supposedly, the day after Tax Day in the US is a day of recognition and rest to all the accountants, nicknamed bean counters. Of course, the work is never over, so here’s one more math puzzle for you – Grid Ten.
Featured Puzzle: Hoshi (Star Sudoku) #1
Fill the triangles in the grid with the numbers 1-9 so that there are no duplicates in any large triangular region or along any stripe of cells, even those that skip over the middle.
Featured Puzzle: Hoshi (Star Sudoku) #2
Fill the triangles in the grid with the numbers 1-9 so that there are no duplicates in any large triangular region or along any stripe of cells, even those that skip over the middle.