r2qkb2/p1p1p3/1p2bprp/P1np2Nn/6P1/1P4N1/2PPPP1P/R1BQKB1R w Q - 0 16
FEN state: r2qkb2/p1p1p3/1p2bprp/P1np2Nn/6P1/1P4N1/2PPPP1P/R1BQKB1R w Q - 0 16 ; Best move: g5e6
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8 and black bishop at f8. Black pawn at a7, black pawn at c7 and black pawn at e7. Black pawn at b6, black bishop at e6, black pawn at f6, black rook at g6 and black pawn at h6. White pawn at a5, black knight at c5, black pawn at d5, white knight at g5 and black knight at h5. White pawn at g4. White pawn at b3 and white knight at g3. White pawn at c2, white pawn at d2, white pawn at e2, white pawn at f2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White queenside is the only castle move available. Half move number is 0. Full move number is 16. White to move.