Friday Puzzle -- matchstick sheep pens
Alex Y
Farmer Jones has used 13 free-standing barriers (each represented here by a matchstick) to create six identical holding pens for sheep shearing, as shown. Overnight. someone stole one of his barriers. Can you rearrange the remaining 12 barriers so that there will still be six identical sheep pens? You must use all 12 matchsticks, and there can be no gaps or unused portions of the matches. 
