r1bq2nr/2p1k3/np1p3p/P3p1P1/1pPb1p2/N4PP1/1BQPP2R/R3KBN1 w - - 0 16
FEN state: r1bq2nr/2p1k3/np1p3p/P3p1P1/1pPb1p2/N4PP1/1BQPP2R/R3KBN1 w - - 0 16 ; Best move: b2d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black knight at g8 and black rook at h8. Black pawn at c7 and black king at e7. Black knight at a6, black pawn at b6, black pawn at d6 and black pawn at h6. White pawn at a5, black pawn at e5 and white pawn at g5. Black pawn at b4, white pawn at c4, black bishop at d4 and black pawn at f4. White knight at a3, white pawn at f3 and white pawn at g3. White bishop at b2, white queen at c2, white pawn at d2, white pawn at e2 and white rook at h2. White rook at a1, white king at e1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 16. White to move.