Hundreds of thousands of Sudoku puzzles, playable in your browser.
This app is now FREE! Check out the blog for an explanation. Anyone who bought it should have received a refund. If I missed you, please email me at the link below and I'll quickly investigate.
See the instructions at http://chromesudoku.blogspot.com/
Sudoku for Google Chrome is an innovative and fully featured sudoku game with the following features:
1. Hundreds of thousands of puzzles...so you will never run out of puzzles!
2. Four levels of difficulty. Easy to approach for beginners. Challenging for sudoku experts.
3. Note taking -- take notes in the cells to help you figure out the puzzles.
4. Hints mode -- if you are just starting out, you can have the game show you which values are possible in each cell.
5. Keyboard interactions -- you can play the game completely with the keyboard -- keep your times low!
6. Undo -- you can now undo with the undo button and ctrl+z (cmd+z on mac)
7. Errors -- Options to either show you your errors, or just indicate whether errors are present.
Update for Version 1.4 and 1.5
1. Added the Trademark symbol to Google Chrome
2. Input pane is no longer modal.
3. Added some mouse-over highlighting to menu bar options
4. Bug fixes.
Updates for Version 1.3
1. Fixed some bugs in hints mode
2. Added undo functionality.
3. Added verify progress back in -- different than show errors in that show errors shows you which cells have incorrect values, verify progress just gives an 'errors' or 'no errors' type response
Updates for Version 1.2. The following features were added:
1. The ability to take a single note. Click the pencil icon on the cell or input pane, or just hit the 'n' key, to toggle single note mode. The option is only available when there is a single value in the cell.
2. The end game workflow happens automatically when you fill in the board. If you want to review your solution, the verify button is available on the options bar at the top of the play area. Note that the verify button is only enabled when all the cells are filled in.
3. The input pane can be made transparent by moving the mouse off it, and can be made opaque again by moving the mouse back over the pane. You can dismiss the pane by clicking anywhere off the pane.
Demo has been updated with these features.
As a note, I am really encouraged by the positive feedback I am seeing in the comments below. Feel free to reach out to me at email@example.com with thoughts, feature requests, or (constructive) criticisms.