Daniel_

All of you that like Cross Words and Mathematics should try Kakuro (http://www.kakuro.com/).

It's not pure logic, there is arithmetic in it too. And it's like a cross word.

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Overhead, the Albatross hangs motionless upon the air,
And deep beneath the rolling waves,
In labyrinths of Coral Caves,
The Echo of a distant time
Comes willowing across the sand;
And everthing is Green and Submarine
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