rn1qkb2/pbp1p2r/1p3p1p/3p1np1/3NNPPP/1PP2B1R/P1QPP3/R1B1K3 b Q - 2 15
FEN state: rn1qkb2/pbp1p2r/1p3p1p/3p1np1/3NNPPP/1PP2B1R/P1QPP3/R1B1K3 b Q - 2 15 ; Best move: f5d4
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 bishop at f8. Black pawn at a7, black bishop at b7, black pawn at c7, black pawn at e7 and black rook at h7. Black pawn at b6, black pawn at f6 and black pawn at h6. Black pawn at d5, black knight at f5 and black pawn at g5. White knight at d4, white knight at e4, white pawn at f4, white pawn at g4 and white pawn at h4. White pawn at b3, white pawn at c3, white bishop at f3 and white rook at h3. White pawn at a2, white queen at c2, white pawn at d2 and white pawn at e2. White rook at a1, white bishop at c1 and white king at e1. White queenside is the only castle move available. Half move number is 2. Full move number is 15. Black to move.