rn1q1b1r/p1p1pp1p/4k3/1p1p1np1/4NP2/3P2PP/PPP1PK2/R1BQ2NR w - - 0 10
FEN state: rn1q1b1r/p1p1pp1p/4k3/1p1p1np1/4NP2/3P2PP/PPP1PK2/R1BQ2NR w - - 0 10 ; Best move: e4g5
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at e7, black pawn at f7 and black pawn at h7. Black king at e6. Black pawn at b5, black pawn at d5, black knight at f5 and black pawn at g5. White knight at e4 and white pawn at f4. White pawn at d3, white pawn at g3 and white pawn at h3. White pawn at a2, white pawn at b2, white pawn at c2, white pawn at e2 and white king at f2. White rook at a1, white bishop at c1, white queen at d1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 10. White to move.