r1b1q1nr/p3kp2/3p3p/1pp1p1b1/1PQ1P3/3P1PP1/PP2B2P/RN1NK2R w KQ - 0 16
FEN state: r1b1q1nr/p3kp2/3p3p/1pp1p1b1/1PQ1P3/3P1PP1/PP2B2P/RN1NK2R w KQ - 0 16 ; Best move: c4d5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at e8, black knight at g8 and black rook at h8. Black pawn at a7, black king at e7 and black pawn at f7. Black pawn at d6 and black pawn at h6. Black pawn at b5, black pawn at c5, black pawn at e5 and black bishop at g5. White pawn at b4, white queen at c4 and white pawn at e4. White pawn at d3, white pawn at f3 and white pawn at g3. White pawn at a2, white pawn at b2, white bishop at e2 and white pawn at h2. White rook at a1, white knight at b1, white knight at d1, white king at e1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 0. Full move number is 16. White to move.