1r2kbr1/p1qp1pp1/npp1p3/P6p/2P2P2/R2bP1PN/1P1BQ2P/1N2KB1R w K - 0 16
FEN state: 1r2kbr1/p1qp1pp1/npp1p3/P6p/2P2P2/R2bP1PN/1P1BQ2P/1N2KB1R w K - 0 16 ; Best move: a3d3
The current state of the chess board is: Black rook at b8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at a7, black queen at c7, black pawn at d7, black pawn at f7 and black pawn at g7. Black knight at a6, black pawn at b6, black pawn at c6 and black pawn at e6. White pawn at a5 and black pawn at h5. White pawn at c4 and white pawn at f4. White rook at a3, black bishop at d3, white pawn at e3, white pawn at g3 and white knight at h3. White pawn at b2, white bishop at d2, white queen at e2 and white pawn at h2. White knight at b1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 16. White to move.