Use the differences to find the solution to this Sudoku.
The puzzle can be solved with the help of small clue-numbers which
are either placed on the border lines between selected pairs of
neighbouring squares of the grid or placed after slash marks on. . . .
A Sudoku with clues given as sums of entries.
Who said that adding, subtracting, multiplying and dividing
couldn't be fun?
Place the numbers 1, 2, 3,..., 9 one on each square of a 3 by 3
grid so that all the rows and columns add up to a prime number. How
many different solutions can you find?
A game for 1 person to play on screen. Practise your number bonds
whilst improving your memory
Can you be the first to complete a row of three?
Can you spot the similarities between this game and other games you
know? The aim is to choose 3 numbers that total 15.