r2qk1r1/5pb1/1Qp4p/pN1P2pn/P3p1P1/1PP2B2/R2P1P1B/4K1NR b Kq - 2 21
FEN state: r2qk1r1/5pb1/1Qp4p/pN1P2pn/P3p1P1/1PP2B2/R2P1P1B/4K1NR b Kq - 2 21 ; Best move: d8b6
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8 and black rook at g8. Black pawn at f7 and black bishop at g7. White queen at b6, black pawn at c6 and black pawn at h6. Black pawn at a5, white knight at b5, white pawn at d5, black pawn at g5 and black knight at h5. White pawn at a4, black pawn at e4 and white pawn at g4. White pawn at b3, white pawn at c3 and white bishop at f3. White rook at a2, white pawn at d2, white pawn at f2 and white bishop at h2. White king at e1, white knight at g1 and white rook at h1. White kingside and black queenside castles are available. Half move number is 2. Full move number is 21. Black to move.