rnbk1br1/1p3ppp/p1np4/1qp1p3/2P1N3/P2P4/1P1QPPPP/1RB1KBR1 w - - 0 16
FEN state: rnbk1br1/1p3ppp/p1np4/1qp1p3/2P1N3/P2P4/1P1QPPPP/1RB1KBR1 w - - 0 16 ; Best move: c4b5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at d8, black bishop at f8 and black rook at g8. Black pawn at b7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at a6, black knight at c6 and black pawn at d6. Black queen at b5, black pawn at c5 and black pawn at e5. White pawn at c4 and white knight at e4. White pawn at a3 and white pawn at d3. White pawn at b2, white queen at d2, white pawn at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 16. White to move.