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.
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.
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.
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.
September 9th is International Sudoku Day! So, today’s puzzle is Jigsaw Sudoku. The rules are pretty much the same as regular Sudoku, with irregular regions instead of 3×3.
Kakuro is another popular Japanese puzzle. Another popular name is “Cross Sums,” because it functions similarly to a crossword puzzle. Fill in the grid with the digits 1-9.
“I want to play a game.” Jigsaw has scrambled the regions of a Sudoku grid and placed all the answers in cages! Can you still solve it?
The German puzzle Miss Lupun (an anagram of “plus minus”) was the inspiration for today’s puzzle – Math Ladders. Simply change the number at the top of the building into the number at the bottom using the mathematical operations in the circles between floors. Use only the digits 0-9 in four separate columns.
Mathrax originated on the German puzzle website janko.at. Fill in numbers from 1 to 9, such that no row or column contains any duplicate numbers. Sounds pretty normal so far, right? Now let’s add math!
Mathrax originated on the German puzzle website janko.at. Fill in numbers from 1 to 7, such that no row or column contains any duplicate numbers. Sounds pretty normal so far, right? Now let’s add math!
