2r1kbnr/pn2p3/b1pp1p2/6Pp/4N1P1/3B3P/R1PPK1Q1/1rB3NR b k - 0 23
FEN state: 2r1kbnr/pn2p3/b1pp1p2/6Pp/4N1P1/3B3P/R1PPK1Q1/1rB3NR b k - 0 23 ; Best move: a6d3
The current state of the chess board is: Black rook at c8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black knight at b7 and black pawn at e7. Black bishop at a6, black pawn at c6, black pawn at d6 and black pawn at f6. White pawn at g5 and black pawn at h5. White knight at e4 and white pawn at g4. White bishop at d3 and white pawn at h3. White rook at a2, white pawn at c2, white pawn at d2, white king at e2 and white queen at g2. Black rook at b1, white bishop at c1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 23. Black to move.