r1b1kbr1/pp1p2pp/3q4/1Np1n3/P2P1BP1/5pR1/1P1K2B1/N1R2Q2 b q - 1 23
FEN state: r1b1kbr1/pp1p2pp/3q4/1Np1n3/P2P1BP1/5pR1/1P1K2B1/N1R2Q2 b q - 1 23 ; Best move: e5c4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at a7, black pawn at b7, black pawn at d7, black pawn at g7 and black pawn at h7. Black queen at d6. White knight at b5, black pawn at c5 and black knight at e5. White pawn at a4, white pawn at d4, white bishop at f4 and white pawn at g4. Black pawn at f3 and white rook at g3. White pawn at b2, white king at d2 and white bishop at g2. White knight at a1, white rook at c1 and white queen at f1. Black queenside is the only castle move available. Half move number is 1. Full move number is 23. Black to move.