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Here are another 150 puzzles from Ireland's favourite crossword.

Sudoku is a real cultural phenomenon: a French fad in the 1890s, a Japanese craze in the 1980s, it is peculiarly British obsession. This book contains 201 fiendish brainteasers, ranging from easy to mind-bogglingly difficult. It provides a daily fix for the hardened Sudoku fan and sets an addictive challenge for novices. It's more than a game.

The first ever Bumper Book of Simplex Crosswords. Containing 300 Simplex crosswords, all newly-published in book form, the first ever Bumper Book of Simplex Crosswords has been compiled by Mary O'Brien.

The next book in the highly successful Simplex series.

All newly published in book form, Simplex 150 has been compiled by Mary O' Brien, who has been setting the Simplex crossword for more than 20 years

A collection of 200 previously unpublished Difficult Su Doku puzzles. Perfect for the more advanced Su Doku solver in need of a constant supply of challenging puzzles. Guaranteed to provide hours of absorbing, brain-stretching entertainment.

Appearing daily in the Irish Times for over forty years, the Simplex crossword has attracted a devoted following.

The Simplex Crossword formula has been hugely successful and made bestsellers of all six books. Appearing daily in the Irish Times for over forty years, the crossword has attracted a devoted following.

Appearing daily in the Irish Times for over forty years, the Simplex crossword has attracted a devoted following.

Don'ts for Husbands and Don'ts for Wives are facsimile editions of the original books published by A&C Black in 1913, containing hundreds of snippets of entertaining advice for a happy marriage, which rings true almost 100 years after they were written.