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Using exactly four straight lines, without taking your pen off the (virtual) paper, can you join all nine dots?



Note: this puzzle is not interactive, and cannot be clicked.

A Charming Puzzle, Twentieth Century Standard Puzzle Book, A. Cyril Pearson.

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Starting with the 6 in the bottom left corner, what is the highest total you can make, if you only move up or right, using the mathematical signs on the way?

+	4	−	1	+	3
2	+	4	−	1	+
−	3	+	2	−	2
2	−	4	+	3	−
+	3	−	1	+	2
6	+	1	−	2	+

Note: this puzzle is not interactive, and the numbers cannot be clicked.

Puzzle Copyright © Kevin Stone

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For each of these words, using only the letters of that word, what is the longest word that can be found?

Every letter must be used at least once, and no other letters can be used.

For example:
   taper = repeat · tapper · parapet · pretreat, and many more. But what is the longest word?

taper heals brows often farce yowls satin awful iotas quiet foils score

Puzzle Copyright © Kevin Stone

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Place letters into the grid such that every row, column, and 2 x 2 block has letters (in any order) that form a common word. Each letter is only used once, and no letter is repeated in the rows / cols / blocks.

Letters allowed: D O G D A Y S

		C
L			K
A	T	E
	S	P	I

Note: this puzzle is not interactive, and the squares cannot be clicked.

Puzzle Copyright © Alan Stillson and Frank Longo

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