1rb2b1r/ppkq1pp1/5n1p/n1p1p2B/Q1P1P3/P4N2/1B1PKPPP/R6R w - - 0 17
FEN state: 1rb2b1r/ppkq1pp1/5n1p/n1p1p2B/Q1P1P3/P4N2/1B1PKPPP/R6R w - - 0 17 ; Best move: a4a5
The current state of the chess board is: Black rook at b8, black bishop at c8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black king at c7, black queen at d7, black pawn at f7 and black pawn at g7. Black knight at f6 and black pawn at h6. Black knight at a5, black pawn at c5, black pawn at e5 and white bishop at h5. White queen at a4, white pawn at c4 and white pawn at e4. White pawn at a3 and white knight at f3. White bishop at b2, white pawn at d2, white king at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at a1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 17. White to move.