r3kbr1/pbpp1ppp/np6/4p1q1/1P2P1P1/6PP/P1PPQ1K1/RNB2BNR b q - 2 9
FEN state: r3kbr1/pbpp1ppp/np6/4p1q1/1P2P1P1/6PP/P1PPQ1K1/RNB2BNR b q - 2 9 ; Best move: a6b4
The current state of the chess board is: Black rook at a8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at a7, black bishop at b7, black pawn at c7, black pawn at d7, black pawn at f7, black pawn at g7 and black pawn at h7. Black knight at a6 and black pawn at b6. Black pawn at e5 and black queen at g5. White pawn at b4, white pawn at e4 and white pawn at g4. White pawn at g3 and white pawn at h3. White pawn at a2, white pawn at c2, white pawn at d2, white queen at e2 and white king at g2. White rook at a1, white knight at b1, white bishop at c1, white bishop at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 2. Full move number is 9. Black to move.