1nbq1b2/rp1kpr2/p6n/1N1PQp1p/P4P1P/R1P3PN/1PP5/2B1KB1R b K - 4 17
FEN state: 1nbq1b2/rp1kpr2/p6n/1N1PQp1p/P4P1P/R1P3PN/1PP5/2B1KB1R b K - 4 17 ; Best move: a6b5
The current state of the chess board is: Black knight at b8, black bishop at c8, black queen at d8 and black bishop at f8. Black rook at a7, black pawn at b7, black king at d7, black pawn at e7 and black rook at f7. Black pawn at a6 and black knight at h6. White knight at b5, white pawn at d5, white queen at e5, black pawn at f5 and black pawn at h5. White pawn at a4, white pawn at f4 and white pawn at h4. White rook at a3, white pawn at c3, white pawn at g3 and white knight at h3. White pawn at b2 and white pawn at c2. 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 4. Full move number is 17. Black to move.