rn2kb1r/1ppb4/pN1p1n1p/4ppp1/P1P4q/4PPP1/1P1P1NKP/R1BQ1R1B w q - 3 16
FEN state: rn2kb1r/1ppb4/pN1p1n1p/4ppp1/P1P4q/4PPP1/1P1P1NKP/R1BQ1R1B w q - 3 16 ; Best move: b6d7
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at b7, black pawn at c7 and black bishop at d7. Black pawn at a6, white knight at b6, black pawn at d6, black knight at f6 and black pawn at h6. Black pawn at e5, black pawn at f5 and black pawn at g5. White pawn at a4, white pawn at c4 and black queen at h4. White pawn at e3, white pawn at f3 and white pawn at g3. White pawn at b2, white pawn at d2, white knight at f2, white king at g2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white rook at f1 and white bishop at h1. Black queenside is the only castle move available. Half move number is 3. Full move number is 16. White to move.