The Times Ultimate Killer Su Doku Book 4: 120 Challenging Puzzles from the Times
22,20 €
Prepare yourself for the toughest Su Doku challenge there is. These diabolically difficult Ultimate Killer Su Dokus will really put your brainpower to the test as you warm up with the 100 Deadly Killer puzzles before steeling yourself to take on the 20 Extra Deadly Su Dokus.
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