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The Times Samurai Su Doku 12

SFr. 20,95
<p>For anyone who loves the challenge of Su Doku but manages to solve them within minutes, you can now enjoy the extended mental workout and ultimate endurance test of a five grid interlinked system.</p>
The Sunday Times Teasers Book 2

SFr. 24,95
<p> <strong>The ultimate lateral-thinking challenge.</strong> </p> <p>If you relish a serious mental workout, this collection of 100 brain teasers will demand your very best lateral thinking skills and mathematical rigour to solve. These puzzles will amuse and perplex in equal measure.</p>
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