Academics
Are you up to the challenge of 2 new Su Doku puzzles, arranged in easy, medium and difficult categories? Keep your mind sharp and test your powers of deductive reasoning with these ever-popular number puzzles. Ideal for whiling away those long commutes, travelling on holiday or relaxing at home. The best value su doku puzzles around.
Collins is home to a huge range of word and number puzzles, from delightfully teasing to fiendishly difficult.
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