1rbq1kn1/6N1/n4r2/1p1pp3/1b4Pp/P3p2B/2PPQPRP/2B1K1R1 w - - 0 23
FEN state: 1rbq1kn1/6N1/n4r2/1p1pp3/1b4Pp/P3p2B/2PPQPRP/2B1K1R1 w - - 0 23 ; Best move: a3b4
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at d8, black king at f8 and black knight at g8. White knight at g7. Black knight at a6 and black rook at f6. Black pawn at b5, black pawn at d5 and black pawn at e5. Black bishop at b4, white pawn at g4 and black pawn at h4. White pawn at a3, black pawn at e3 and white bishop at h3. White pawn at c2, white pawn at d2, white queen at e2, white pawn at f2, white rook at g2 and white pawn at h2. White bishop at c1, white king at e1 and white rook at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 23. White to move.