r1b1kb1r/pBpqnp1p/1p2p3/6p1/1n1PP3/PP6/2PK1PPP/RNB1Q1NR b kq - 4 10
FEN state: r1b1kb1r/pBpqnp1p/1p2p3/6p1/1n1PP3/PP6/2PK1PPP/RNB1Q1NR b kq - 4 10 ; Best move: d7d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, white bishop at b7, black pawn at c7, black queen at d7, black knight at e7, black pawn at f7 and black pawn at h7. Black pawn at b6 and black pawn at e6. Black pawn at g5. Black knight at b4, white pawn at d4 and white pawn at e4. White pawn at a3 and white pawn at b3. White pawn at c2, white king at d2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white queen at e1, white knight at g1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 4. Full move number is 10. Black to move.