rn2kb1r/3qpp2/2bp2p1/Q1pn3p/2P3PP/Pp1P1P2/1P2P2R/RNBK1BN1 b kq - 4 13
FEN state: rn2kb1r/3qpp2/2bp2p1/Q1pn3p/2P3PP/Pp1P1P2/1P2P2R/RNBK1BN1 b kq - 4 13 ; Best move: a8a5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at h8. Black queen at d7, black pawn at e7 and black pawn at f7. Black bishop at c6, black pawn at d6 and black pawn at g6. White queen at a5, black pawn at c5, black knight at d5 and black pawn at h5. White pawn at c4, white pawn at g4 and white pawn at h4. White pawn at a3, black pawn at b3, white pawn at d3 and white pawn at f3. White pawn at b2, white pawn at e2 and white rook at h2. White rook at a1, white knight at b1, white bishop at c1, white king at d1, white bishop at f1 and white knight at g1. Black kingside and black queenside castles are available. Half move number is 4. Full move number is 13. Black to move.