KUROSU

Play more Kurosu and 36 puzzles like them every day on your smartphone or tablet with the Mail Digital Edition, your Mail newspaper on your screen. Get a trial offer today at mymail. co.uk/puzzles

Daily Mail Kurosu Volume 1 out now! Order for £6.29 (RRP £8.99) from mailshop.co.uk/books or call 020 3308 9193. Free p&p on orders over £20.

EVERY day in the Mail you can play Kurosu, the most addictive brainteaser since Sudoku. There are only two rules:

1: Fill in each space with either a nought or a cross so there are no more than two consecutive noughts or crosses in any row or column. Important note: diagonals don’t count.

2: Each row and column must contain three noughts and three crosses.