rnb4r/1p1k1q2/3p3p/N1p1b1pP/P1P2Q2/2N1P1P1/1P3P1n/1RB1KB1R b K - 0 23
FEN state: rnb4r/1p1k1q2/3p3p/N1p1b1pP/P1P2Q2/2N1P1P1/1P3P1n/1RB1KB1R b K - 0 23 ; Best move: g5f4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black rook at h8. Black pawn at b7, black king at d7 and black queen at f7. Black pawn at d6 and black pawn at h6. White knight at a5, black pawn at c5, black bishop at e5, black pawn at g5 and white pawn at h5. White pawn at a4, white pawn at c4 and white queen at f4. White knight at c3, white pawn at e3 and white pawn at g3. White pawn at b2, white pawn at f2 and black knight at h2. White rook at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 23. Black to move.