1n2kq1r/r2b3p/p5pn/1PpPNp2/1b1P4/PP2K1Q1/4P1PP/RNB2B1R w k - 3 17
FEN state: 1n2kq1r/r2b3p/p5pn/1PpPNp2/1b1P4/PP2K1Q1/4P1PP/RNB2B1R w k - 3 17 ; Best move: a3b4
The current state of the chess board is: Black knight at b8, black king at e8, black queen at f8 and black rook at h8. Black rook at a7, black bishop at d7 and black pawn at h7. Black pawn at a6, black pawn at g6 and black knight at h6. White pawn at b5, black pawn at c5, white pawn at d5, white knight at e5 and black pawn at f5. Black bishop at b4 and white pawn at d4. White pawn at a3, white pawn at b3, white king at e3 and white queen at g3. White pawn at e2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white bishop at f1 and white rook at h1. Black kingside is the only castle move available. Half move number is 3. Full move number is 17. White to move.