Have You Herd Of Cows Puzzle
The Puzzle:
 | Old Farmer Palmer has a herd of cows, but he always seems to forget how many animals there are. When he counts them he just makes sure he can see 6 cows from each window of his house: |
One night, however, Russell the Rustler took away half of the herd. Farmer Palmer didn't notice for ages because the next morning he could still see 6 cows from each window. How was it done?
Many solutions and variations are possible once you get the idea! Here's one simple version:
