1rb1k1r1/1pp2qp1/p1nb1p2/3pp2p/PNPP4/1P2PBP1/1R1NKP1n/2BQ2R1 w - - 16 21
FEN state: 1rb1k1r1/1pp2qp1/p1nb1p2/3pp2p/PNPP4/1P2PBP1/1R1NKP1n/2BQ2R1 w - - 16 21 ; Best move: f3d5
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8 and black rook at g8. Black pawn at b7, black pawn at c7, black queen at f7 and black pawn at g7. Black pawn at a6, black knight at c6, black bishop at d6 and black pawn at f6. Black pawn at d5, black pawn at e5 and black pawn at h5. White pawn at a4, white knight at b4, white pawn at c4 and white pawn at d4. White pawn at b3, white pawn at e3, white bishop at f3 and white pawn at g3. White rook at b2, white knight at d2, white king at e2, white pawn at f2 and black knight at h2. White bishop at c1, white queen at d1 and white rook at g1. Both players have exhausted their castles. Half move number is 16. Full move number is 21. White to move.