r1qn1bnr/pp5p/P1p1kp2/3pNbP1/1P2P1P1/3B3P/RBPP4/1NQ1K2R b K - 2 16
FEN state: r1qn1bnr/pp5p/P1p1kp2/3pNbP1/1P2P1P1/3B3P/RBPP4/1NQ1K2R b K - 2 16 ; Best move: f5e4
The current state of the chess board is: Black rook at a8, black queen at c8, black knight at d8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7 and black pawn at h7. White pawn at a6, black pawn at c6, black king at e6 and black pawn at f6. Black pawn at d5, white knight at e5, black bishop at f5 and white pawn at g5. White pawn at b4, white pawn at e4 and white pawn at g4. White bishop at d3 and white pawn at h3. White rook at a2, white bishop at b2, white pawn at c2 and white pawn at d2. White knight at b1, white queen at c1, white king at e1 and white rook at h1. White kingside is the only castle move available. Half move number is 2. Full move number is 16. Black to move.