Threading Through Math History
Marin Mersenne: 1625 Europe’s Version of a
Wiki; and How Safe is Your I.R.A.?
Problem of the Month –
Numbered Pentominoes– a fusion puzzle.
Simple arithmetic, but keep looking.
Let’s Solve One Together:
Now available at the iBooks Store. Also, Uncle Bob’s own store is now open where the book will be available for purchase in pdf format, along with sets of 50 of UB’s regular puzzles (published individually since 2005).
Department of Words
Ferriswords – a carnival of letters with very few words.
Five and Ten – choices, choices ... and a final answer called for.
Fit for Four – one word for ...
Crisscross Crunch – a big puzzle in a small space.
– where we don't mean half of what we say.
MiniCryptic Tutorial – where we explain the other half (will open in another window).
© All rights reserved