# Sudoku Puzzles to Solve

**Sudoku Rules** In the 9x9 Sudoku puzzle above, the objective is to achieve an arrangement of numbers such that 1 to 9 appear in each of the nine:

- 3x3 regions as delineated by the light blue and green shading
- rows
- columns

See an example of a completed Sudoku board.

**Usage Instructions** Click within an input square on the Sudoku board. This is where numbers are needed to complete the Sudoku puzzle. The keyboard keys that are accepted are:

- The numeric keys 1 to 9 on the top portion of the keyboard or the right numeric keypad.
*Tab*to move from one input field to the next.*Shift Tab*to move from one input field to the previous.

User entered numbers are in bold and of different color from the pre-set numbers. An invalid entry is indicated with yellow highlighting.

See Sudoku Puzzles blog entry for information on Sudoku and this implementation.