r3k1nr/pp1b1N1p/2p1p2b/q7/1QPp4/4PP2/PP1P2PP/1RB1KB1R b kq - 0 13
FEN state: r3k1nr/pp1b1N1p/2p1p2b/q7/1QPp4/4PP2/PP1P2PP/1RB1KB1R b kq - 0 13 ; Best move: a5b4
The current state of the chess board is: Black rook at a8, black king at e8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black bishop at d7, white knight at f7 and black pawn at h7. Black pawn at c6, black pawn at e6 and black bishop at h6. Black queen at a5. White queen at b4, white pawn at c4 and black pawn at d4. White pawn at e3 and white pawn at f3. White pawn at a2, white pawn at b2, white pawn at d2, white pawn at g2 and white pawn at h2. White rook at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 13. Black to move.