rnb1k2r/3p1pp1/Q5q1/1p2pN2/1P1P2np/P4P2/2PB2PP/RN2KBR1 b kq - 0 20
FEN state: rnb1k2r/3p1pp1/Q5q1/1p2pN2/1P1P2np/P4P2/2PB2PP/RN2KBR1 b kq - 0 20 ; Best move: a8a6
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8 and black rook at h8. Black pawn at d7, black pawn at f7 and black pawn at g7. White queen at a6 and black queen at g6. Black pawn at b5, black pawn at e5 and white knight at f5. White pawn at b4, white pawn at d4, black knight at g4 and black pawn at h4. White pawn at a3 and white pawn at f3. White pawn at c2, white bishop at d2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white king at e1, white bishop at f1 and white rook at g1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 20. Black to move.