r2qkb1r/3np1pp/1Np4n/p3PB2/2pP2b1/5P1P/PP3KP1/R1BQ2NR w q - 1 16
FEN state: r2qkb1r/3np1pp/1Np4n/p3PB2/2pP2b1/5P1P/PP3KP1/R1BQ2NR w q - 1 16 ; Best move: h3g4
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black knight at d7, black pawn at e7, black pawn at g7 and black pawn at h7. White knight at b6, black pawn at c6 and black knight at h6. Black pawn at a5, white pawn at e5 and white bishop at f5. Black pawn at c4, white pawn at d4 and black bishop at g4. White pawn at f3 and white pawn at h3. White pawn at a2, white pawn at b2, white king at f2 and white pawn at g2. White rook at a1, white bishop at c1, white queen at d1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 1. Full move number is 16. White to move.