Jemand namens Tdonoclift hat sich ein Regenbogen-Sudoku aus Holz gebaut. Im Prinzip recht einfach mit anständigem Gerät: 3x3 Kugelraster in ein 3x3 Layout reinfräsen, bisschen abschleifen, done. Die farbigen Kugeln gehen auch mit Smarties oder Bonbons oder Gummibärchen, schon hat man ein dreidimensionales Sudoku am Start und ich liebe Sudoku. Nice!
Sudoku is normally played with the numbers 1-9, but you can have more fun by replacing numbers with pretty colours! Also, bringing the game off the page and into 3D space makes for more collaborative puzzle solving! Try leaving an unsolved puzzle out for people and see how no one can resist having a go!
The game of Sudoku has been somewhat of an obsession for many mathematicians, although it has taken a number of variations and names throughout history. There are approximately 6.67E+21 (that's 667 with 19 zeros after!) unique solutions to the Sudoku puzzle!! It has also been determined that the minimum number of clues possible for a proper Sudoku is 17, with over 49,000 of these solutions found!
You can play the Rainbowku (I know, terrible portmanteau) by obtaining any Sudoku starting puzzle (widely available online) and assigning colours to the numbers. As long as you keep consistent colour/number mapping the game can be played.