Hexwords
The puzzle "Monkeywrench" fired up my imagination and I just had to make my own version.
There are currently 100 puzzles on offer and there are another 50 well on the way. Enjoy!
the 12 Balls Puzzle
12 balls. One heavier or lighter. Three weighings to identify which and whether heavy or light. A great puzzle. And it's been great fun producing a simulation that you can test your ideas on.
The Bishop & The Vicar
I encountered this great puzzle back in the 50's and managed to solve it about 20 minutes. I still love it!
The Competition
I regard this as one of the cleverest puzzles I have ever encountered - maybe you will too!
Query
I don't think I managed to solve this one when I first encountered it. Maybe you'll do better!
Crossing the Desert
This one I spent many hours on and never really cracked it.
The Eagle and the Train
One of those puzzles where it's easy to go down a tortuous path (pun intended!). Be on the lookout for an 'Aha!' solution.
Acrostics
Fiendishly difficult to create but relatively easy to solve. You also have the choice of using straight or cryptic clues.