rnb1k1rN/1p1p1p2/2p1p2p/P5p1/P2q1nPP/N4P2/RBP1P3/4KBR1 b q - 0 20
FEN state: rnb1k1rN/1p1p1p2/2p1p2p/P5p1/P2q1nPP/N4P2/RBP1P3/4KBR1 b q - 0 20 ; Best move: d4g1
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8, black rook at g8 and white knight at h8. Black pawn at b7, black pawn at d7 and black pawn at f7. Black pawn at c6, black pawn at e6 and black pawn at h6. White pawn at a5 and black pawn at g5. White pawn at a4, black queen at d4, black knight at f4, white pawn at g4 and white pawn at h4. White knight at a3 and white pawn at f3. White rook at a2, white bishop at b2, white pawn at c2 and white pawn at e2. White king at e1, white bishop at f1 and white rook at g1. Black queenside is the only castle move available. Half move number is 0. Full move number is 20. Black to move.