r1b3qr/ppppb1kp/n6n/4PpNP/P1P3p1/7R/1P1P1P2/RNBQKB2 b Q - 2 16
FEN state: r1b3qr/ppppb1kp/n6n/4PpNP/P1P3p1/7R/1P1P1P2/RNBQKB2 b Q - 2 16 ; Best move: e7g5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at d7, black bishop at e7, black king at g7 and black pawn at h7. Black knight at a6 and black knight at h6. White pawn at e5, black pawn at f5, white knight at g5 and white pawn at h5. White pawn at a4, white pawn at c4 and black pawn at g4. White rook at h3. White pawn at b2, white pawn at d2 and white pawn at f2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 2. Full move number is 16. Black to move.