OUR sudoku is simple to play but fiendish to finish – and you will have to wait until next week’s paper for the solution to be revealed. If a clue is all you need to cross the finish line, you can text the word SUDOKU to 81800 and we will send you a complete line from the answer grid in return. Texts cost 60p and you can only get the clue for this week’s puzzle until 9am on Wednesday. To play our sudoku, you have to fill in the grid so that each row, column and 3x3 box contains the numbers 1 to 9 with no duplication. Good luck!