Fill Number

Each row, column and block (9 squares each) needs to be filled out with the numbers 1-9, without repeating any numbers within the row, column or block.

The game is a grid of 81 squares. The grid is divided into nine blocks, Each block contains 9 squares arranged in 3 rows and 3 columns.

Use Numbers 1-9. Each number can only appear once in a row, column or block:

+ When you start a game, some squares will be pre-filled for you. You cannot change these numbers in the course of the game.

+ Each column must contain all of the numbers 1 through 9 and no two numbers in the same column of a number puzzle can be the same.

+ Each row must contain all of the numbers 1 through 9 and no two numbers in the same row of a number puzzle can be the same.

+ Each block must contain all of the numbers 1 through 9 and no two numbers in the same block of a number puzzle can be the same.

Click empty square to fill number:

+ Choose number from popup numbers

+ Repeated number in row, column or block are removed

Number puzzle level:

+ The more spaces filled in, the easier the game

+ The more difficult number puzzles have very few spaces that are already filled in.

Random number puzzle:

+ Choose level to create random number puzzle

+ Level number is empty squares count

+ Simple from level 1

+ Easy to get started

Classic puzzles:

+ Click bottom puzzle icon to choose

+ Relatively difficult

Undo fill

+ All numbers you filled can undo

+ Multiple attempt

Top info area:

+ Top left is time you spent on this game, click to set text color

+ Top right is game level, click to choose level you want

+ Click empty ground to set title background color

Setting:

+ Restart game

+ Game theme, change grid color, title color, operate button color, game background color.

Fill number rewards patience, insights, and recognition of patterns, not blind luck or guessing.