r1b1kb2/p2q1pp1/2p1p2r/1pnp3p/1P1P1P1N/PB2n2P/1BP3P1/R2QK1NR w KQq - 4 16
FEN state: r1b1kb2/p2q1pp1/2p1p2r/1pnp3p/1P1P1P1N/PB2n2P/1BP3P1/R2QK1NR w KQq - 4 16 ; Best move: d1e2
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black bishop at f8. Black pawn at a7, black queen at d7, black pawn at f7 and black pawn at g7. Black pawn at c6, black pawn at e6 and black rook at h6. Black pawn at b5, black knight at c5, black pawn at d5 and black pawn at h5. White pawn at b4, white pawn at d4, white pawn at f4 and white knight at h4. White pawn at a3, white bishop at b3, black knight at e3 and white pawn at h3. White bishop at b2, white pawn at c2 and white pawn at g2. White rook at a1, white queen at d1, white king at e1, white knight at g1 and white rook at h1. White kingside, white queenside and black queenside castles are available. Half move number is 4. Full move number is 16. White to move.