Move 9 at F16 looks way too loose. If we look at the corner ( renumbered to show just the moves in that corner ) you are essentially playing a taisha with white having an extra move at D12. As the taisha often explodes into half a dozen or more running groups desperately seeking life, that extra stone is sure to benefit him.
$$Wc
$$-------------------------
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . . 1 . . . . . .
$$| . . . , 5 4 . . . ,
$$| . . 2 . . . . . . .
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . . 3 . . . . . .
$$| . . . . . . . . . .
$$| . . . , . . . . . .
- Click Here To Show Diagram Code
[go]$$Wc
$$-------------------------
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . . 1 . . . . . .
$$| . . . , 5 4 . . . ,
$$| . . 2 . . . . . . .
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . . 3 . . . . . .
$$| . . . . . . . . . .
$$| . . . , . . . . . .[/go]
Worse yet, you abandon your newly placed stone at F16. Even if white 3 were not there, black 6 is inconsistent with black 4.
$$Wc Joseki is one of the circled plays.
$$-------------------------
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . 6 1 . C . . . .
$$| . . . , 5 4 . . . ,
$$| . . 2 . C C . . . .
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . . , . . . . . .
- Click Here To Show Diagram Code
[go]$$Wc Joseki is one of the circled plays.
$$-------------------------
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . 6 1 . C . . . .
$$| . . . , 5 4 . . . ,
$$| . . 2 . C C . . . .
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . . , . . . . . .[/go]
If you are going to play 4, you have to back it up when he attacks it.
But you end up with the extra stone just sitting there, separated and useless:
$$Wc White fixes his shape with 'a' next
$$-------------------------
$$| . . . . . . . . . .
$$| . . 7 . . . . . . .
$$| . . 6 1 a . . . . .
$$| . . 0 8 5 4 . . . ,
$$| . . 2 9 . . . . . .
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . . 3 . . . . . .
$$| . . . . . . . . . .
$$| . . . , . . . . . .
- Click Here To Show Diagram Code
[go]$$Wc White fixes his shape with 'a' next
$$-------------------------
$$| . . . . . . . . . .
$$| . . 7 . . . . . . .
$$| . . 6 1 a . . . . .
$$| . . 0 8 5 4 . . . ,
$$| . . 2 9 . . . . . .
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . . 3 . . . . . .
$$| . . . . . . . . . .
$$| . . . , . . . . . .[/go]
Another way of looking at is is, if you had this position:
$$Wc
$$-------------------------
$$| . . . . . . . . . .
$$| . . O . . . . . . .
$$| . . X O O . . . . .
$$| . . X X O . . . . ,
$$| . . X O . . . . . .
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . . O . . . . . .
$$| . . . . . . . . . .
$$| . . . , . . . . . .
- Click Here To Show Diagram Code
[go]$$Wc
$$-------------------------
$$| . . . . . . . . . .
$$| . . O . . . . . . .
$$| . . X O O . . . . .
$$| . . X X O . . . . ,
$$| . . X O . . . . . .
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . . O . . . . . .
$$| . . . . . . . . . .
$$| . . . , . . . . . .[/go]
...would you play this:
$$Bc
$$-------------------------
$$| . . . . . . . . . .
$$| . . O . . . . . . .
$$| . . X O O . . . . .
$$| . . X X O 1 . . . ,
$$| . . X O . . . . . .
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . . O . . . . . .
$$| . . . . . . . . . .
$$| . . . , . . . . . .
- Click Here To Show Diagram Code
[go]$$Bc
$$-------------------------
$$| . . . . . . . . . .
$$| . . O . . . . . . .
$$| . . X O O . . . . .
$$| . . X X O 1 . . . ,
$$| . . X O . . . . . .
$$| . . . . . . . . . .
$$| . . . . . . . . . .
$$| . . . O . . . . . .
$$| . . . . . . . . . .
$$| . . . , . . . . . .[/go]
??
)
, why it's better to continue pushing
, turning at the same point H6 gives W the follow-up atari at G7.