Here's the set up: two cars are side by side on the road. One car is going 70mph and the other is going 100mph. The drivers of the cars see a fallen tree in the road and start braking at the same time. The car that had been going 70mph stops right before touching the tree. How fast is the other car going when it hits the tree? The answer surprised me.
Puzzle designer Fleb explains the rules for solving masyu logic puzzles, then solves one, explaining his logic.
Puzzle designer Fleb shows how to solve a “cave puzzle,” which is a logic puzzle that reminds me a bit of sudoku. It looks fun!
If an entire 3×3 Rubik’s Cube is too much, but a 2×2 one too plainly insulting, try this 2×3 one that you can get for about a fiver at Amazon. That’s four ninths of a real Rubik’s Cube for nine tenths of the price! The product page assures you in its first bullet point that […]