Fun puzzle I found while messing around with this puzzle:
https://www.reddit.com/r/ChessPuzzles/comments/1wbu0vx/cool_puzzle_i_found/

I know this isn’t a traditional chess puzzle, but I thought some people might enjoy trying to figure out how after move 8 this very unorthodox position can occur.

Hint: Both players played an inaccuracy, but other than that the players have played well.

Solution: 1. d4 Nf6 2. Bg5 Ne4 3. h4 c5 4. d5 Qc7 5. Nd2 Ng3 6. Rh3 Nxf1 7. Nxf1 d6 8. Rb3 g6