Solve this Sudoku puzzle whose clues are in the form of sums of the numbers which should appear in diagonal opposite cells.
To celebrate NRICH's 25th birthday, why not play this special version of our classic game, Got It? Can you devise a strategy so that you will always win?
A game for 2 or more people. Starting with 100, subratct a number from 1 to 9 from the total. You score for making an odd number, a number ending in 0 or a multiple of 6.
In this game you throw two dice and find their total, then move the appropriate counter to the right. Which counter reaches the purple box first?
Take turns to place a decimal number on the spiral. Can you get three consecutive numbers?
