r2qkb2/nb1pp1pr/Qpp4n/p4P1p/4PN1P/2P2P2/PP1P1K2/RNB2B1R b - - 3 13
FEN state: r2qkb2/nb1pp1pr/Qpp4n/p4P1p/4PN1P/2P2P2/PP1P1K2/RNB2B1R b - - 3 13 ; Best move: b7a6
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8 and black bishop at f8. Black knight at a7, black bishop at b7, black pawn at d7, black pawn at e7, black pawn at g7 and black rook at h7. White queen at a6, black pawn at b6, black pawn at c6 and black knight at h6. Black pawn at a5, white pawn at f5 and black pawn at h5. White pawn at e4, white knight at f4 and white pawn at h4. White pawn at c3 and white pawn at f3. White pawn at a2, white pawn at b2, white pawn at d2 and white king at f2. White rook at a1, white knight at b1, white bishop at c1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 3. Full move number is 13. Black to move.