App removed from site
We're sorry, "Challenging Puzzles" has been removed from the App Store.
Please return to the front page and use the search box above to find another app.
We're sorry, "Challenging Puzzles" has been removed from the App Store.
Please return to the front page and use the search box above to find another app.
Contains mathematical brain teasers, first published in 1917, as the puzzles regularly appeared in newspapers and magazines. This book includes new twists on old puzzles, as well as other puzzles - some reasonably easy and others very hard.
If you would like to see your book on iPhone and other formats please contact us via www.andrewsuk.com
![]() |
Screenshot 1 of 5 | ![]() |
| ||