Paper Brain – Sudoku, puzzles – Alexandre Grobost

Paper Games groups several press games for free. Come sharpen your brain with Sudoku, Takuzu (also known as Binairo) and the classic Plus-or-Less! Our games are aimed at a wide audience, from the youngest beginners to the greatest experts. The main objective? Provide you the best possible user experience by transforming the digital surface into a support as pleasant and fun as the newspaper games section.

The rules of the different puzzles are very simple:

Sudoku
A sudoku grid contains nine rows and nine columns. It is subdivided with nine blocks of nine boxes.
The purpose of the game is to fill the boxes with numbers from 1 to 9, always making sure that the same number can appear only once per column, per line and per block of 9 squares.

Takuzu
Available for grids of size ranging from 4×4 to 14×14. Each grid must be completed with 0 and 1 respecting three rules:
• There must not be more than two identical digits next to each other
• Each row and each column must contain an equal number of 0 and 1
• Two rows or two columns can not be identical

More or less
Available for grids ranging from 6×6 to 9×9. The two mathematical signs “smaller than” and “larger than” will allow you to complete the number grid from 1 to 6/7/8/9 according to the grid size. Be careful, the same number can only be used once per row and column.

Every puzzle has just one correct solution.

Main features
• Unlimited undos. Made a mistake? Just put it back quickly!
• Pencil mode allows you to make assumptions
• The eraser allows you to correct an error
• Hints guide you throughout the game

Main parameters
• Limitation (or not) of the number of errors
• Error display in real time or at the end of the game only
• Highlighting a row and a column related to the selected cell
• Highlighting impossible combinations

Highlights
• An infinity of well-formed puzzles
• Auto-save. If you leave a sudoku unfinished it will be saved.
• Four levels of difficulty perfectly balanced: easy, average, difficult and insane
• Support both phones and tablets
• Portrait and landscape mode for tablets
• Simple and intuitive design with several themes. Choose one of four appearances for a better playing comfort, even in the dark
• Ability to generate other puzzles on the fly