1nb3nr/r1p2k2/pp4pp/1B1p1q2/4pN1P/bPP2P2/PBRP1KP1/1N2Q1R1 b - - 3 20
FEN state: 1nb3nr/r1p2k2/pp4pp/1B1p1q2/4pN1P/bPP2P2/PBRP1KP1/1N2Q1R1 b - - 3 20 ; Best move: a3c5
The current state of the chess board is: Black knight at b8, black bishop at c8, black knight at g8 and black rook at h8. Black rook at a7, black pawn at c7 and black king at f7. Black pawn at a6, black pawn at b6, black pawn at g6 and black pawn at h6. White bishop at b5, black pawn at d5 and black queen at f5. Black pawn at e4, white knight at f4 and white pawn at h4. Black bishop at a3, white pawn at b3, white pawn at c3 and white pawn at f3. White pawn at a2, white bishop at b2, white rook at c2, white pawn at d2, white king at f2 and white pawn at g2. White knight at b1, white queen at e1 and white rook at g1. Both players have exhausted their castles. Half move number is 3. Full move number is 20. Black to move.