r1bqkbn1/2p1p3/1P2r2p/p2p1p2/Pn1P2PP/RP3p2/1B1QPK2/1N3BNR w q - 1 17
FEN state: r1bqkbn1/2p1p3/1P2r2p/p2p1p2/Pn1P2PP/RP3p2/1B1QPK2/1N3BNR w q - 1 17 ; Best move: g4g5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at c7 and black pawn at e7. White pawn at b6, black rook at e6 and black pawn at h6. Black pawn at a5, black pawn at d5 and black pawn at f5. White pawn at a4, black knight at b4, white pawn at d4, white pawn at g4 and white pawn at h4. White rook at a3, white pawn at b3 and black pawn at f3. White bishop at b2, white queen at d2, white pawn at e2 and white king at f2. White knight at b1, white bishop at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 1. Full move number is 17. White to move.