I was asked by a friend to create a Sudoku game in Flash. Though I'm not a regular player, I couldn't resist the possibility of permutations. Though considered a work-in-progress, the game is fully playable. It creates a new puzzle every time from scratch by solving itself as it fills in values. It then chooses which blocks will be the 'given' (red) numbers. The selected givens are chosen based on several factors, such as their proximity to other given numbers, but ultimately have a random effect. This varies the difficulty from game to game. The givens are chosen for half of the board and then duplicated on a rotational symmetry.

To make an entry, select a box and type your number. To mark notations in a box, press and hold the SPACEBAR. A notation grid will appear in the box. Click on the notations you wish to mark, then release the SPACEBAR. The same process can be used to remove notations. Entering a number into the box will clear the notations automatically. When you have a valid row/column/group filled in, green markers will appear. When the puzzle is solved, the entire grid will turn green.

Created using ActionScript 2.0