Franklin SUDOKU SDU-320 User Manual page 12

Note: If you do not want to play the
generated game, press and hold
seconds to exit, then press START to
generate another game.
Some numbers are already filled in at the
start of a puzzle. These are indicated by an
underscore. These numbers are fixed and
cannot be changed.
These empty positions are the ones you
need to fill in. The cursor, indicated by "-",
blinks in the first empty position.
4. Press the empty position where you want to
input a number.
If you place the cursor on a position you have
already filled, the number will blink. You
cannot move the cursor position to a fixed
number.
5. Press 1-9 to input the number you want.
Remember the rules of number placement:
Each number from 1 to 9 can only occur
once in every horizontal row, vertical
column, and 3 x 3 block.
12
for 3