Outlet The Times Su Doku — THE TIMES ULTIMATE KILLER SU DOKU BOOK 2: 120 challenging puzzles from The Times byTimes Mind Games, ;

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For those who like to live dangerously and push beyond their mental comfort zone, steel yourself for the second book in The Times’ toughest Killer series yet.

Prepare for the extreme mental challenge of 100 Deadly-level Killer puzzles, including, exclusive to The Times, 20 Ext