rn1qk1r1/p1p3bp/b3pp2/1p1pPp2/1P2N3/3Bn3/PNPPK1PP/R1BQR3 w q - 0 16
FEN state: rn1qk1r1/p1p3bp/b3pp2/1p1pPp2/1P2N3/3Bn3/PNPPK1PP/R1BQR3 w q - 0 16 ; Best move: e4f6
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8, black king at e8 and black rook at g8. Black pawn at a7, black pawn at c7, black bishop at g7 and black pawn at h7. Black bishop at a6, black pawn at e6 and black pawn at f6. Black pawn at b5, black pawn at d5, white pawn at e5 and black pawn at f5. White pawn at b4 and white knight at e4. White bishop at d3 and black knight at e3. White pawn at a2, white knight at b2, white pawn at c2, white pawn at d2, white king at e2, white pawn at g2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1 and white rook at e1. Black queenside is the only castle move available. Half move number is 0. Full move number is 16. White to move.