r2qk2r/3pnp2/2b2bp1/pp2P1p1/PPB1P2P/N1B1n1PR/2PP4/R2QK3 b kq - 0 21
FEN state: r2qk2r/3pnp2/2b2bp1/pp2P1p1/PPB1P2P/N1B1n1PR/2PP4/R2QK3 b kq - 0 21 ; Best move: e3d1
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8 and black rook at h8. Black pawn at d7, black knight at e7 and black pawn at f7. Black bishop at c6, black bishop at f6 and black pawn at g6. Black pawn at a5, black pawn at b5, white pawn at e5 and black pawn at g5. White pawn at a4, white pawn at b4, white bishop at c4, white pawn at e4 and white pawn at h4. White knight at a3, white bishop at c3, black knight at e3, white pawn at g3 and white rook at h3. White pawn at c2 and white pawn at d2. White rook at a1, white queen at d1 and white king at e1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 21. Black to move.