r1b2br1/3pkppp/7q/Npp1p3/1n6/6PN/P2PPPRP/RQB1KB2 w Q - 3 17
FEN state: r1b2br1/3pkppp/7q/Npp1p3/1n6/6PN/P2PPPRP/RQB1KB2 w Q - 3 17 ; Best move: a2a3
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8 and black rook at g8. Black pawn at d7, black king at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black queen at h6. White knight at a5, black pawn at b5, black pawn at c5 and black pawn at e5. Black knight at b4. White pawn at g3 and white knight at h3. White pawn at a2, white pawn at d2, white pawn at e2, white pawn at f2, white rook at g2 and white pawn at h2. White rook at a1, white queen at b1, white bishop at c1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 3. Full move number is 17. White to move.