rb4n1/1b2q3/Bppk1p1r/4p1p1/P2p1P1p/NPP1P2P/R1QP2PN/B3K1R1 b - - 9 21
FEN state: rb4n1/1b2q3/Bppk1p1r/4p1p1/P2p1P1p/NPP1P2P/R1QP2PN/B3K1R1 b - - 9 21 ; Best move: b7a6
The current state of the chess board is: Black rook at a8, black bishop at b8 and black knight at g8. Black bishop at b7 and black queen at e7. White bishop at a6, black pawn at b6, black pawn at c6, black king at d6, black pawn at f6 and black rook at h6. Black pawn at e5 and black pawn at g5. White pawn at a4, black pawn at d4, white pawn at f4 and black pawn at h4. White knight at a3, white pawn at b3, white pawn at c3, white pawn at e3 and white pawn at h3. White rook at a2, white queen at c2, white pawn at d2, white pawn at g2 and white knight at h2. White bishop at a1, white king at e1 and white rook at g1. Both players have exhausted their castles. Half move number is 9. Full move number is 21. Black to move.