After the four initial moves by both players in a chess game, the following position was obtained:
(BLACK)
+---+---+---+---+---+---+---+---+
| R | N | B | Q | K | B | | R |
+---+---+---+---+---+---+---+---+
| P | P | P | | P | P | P | P |
+---+---+---+---+---+---+---+---+
| | | | | | | | |
+---+---+---+---+---+---+---+---+
| | | | P | | | | |
+---+---+---+---+---+---+---+---+
| | | | | | | | |
+---+---+---+---+---+---+---+---+
| | | | | | | | |
+---+---+---+---+---+---+---+---+
| P | P | P | P | P | P | P | P |
+---+---+---+---+---+---+---+---+
| R | N | B | Q | K | B | | R |
+---+---+---+---+---+---+---+---+
(WHITE)
Reconstruct the game so far.
In 5 moves, it's pretty easy:
1. N-f3 N-h6
2. N-e5 N-g4
3. Nxg4 d5
4. R-g1 Bxg4
5. R-h1 B-c8
But in 4 moves, it just doesn't look like there's enough time to get rid of both knights and get everyone else (except the pawn) back home. Good puzzle. I'm not giving up...