Brain Teasers and Puzzles

Puzzle 261

Place the digits 1 to 8, into the grid. The numbers you can see are the totals for the surrounding numbers.

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Puzzle 262

By changing the second letter of each word below, you can make another valid word.

Can you change each word such that the second letters will reveal an eleven-letter word when read downwards?

Therefore, what now reads 'vokahliuppw' will become a real word.
oval post skin malt when slab miss fund aped sped sway

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Puzzle 263

As oou oan oee, oy poinoer oepoacos eoero thord oetoer oito tho leoteo 'o'.

How mony oifoeront oetoero haoe boen oepoacod?

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Puzzle 264

How many squares of any size on this chessboard do not contain a rook?

Rooks On B3, C7, F5

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