Life In 19x19

DGS Game 754201. I should have captued his dragon but i made mistake on ko threat. Now i have no idea where this game is going. If you like complicated game take a look.

ok..it took me a while to learn how to upload sgf..

quality of the game is not what i wanted but still enjoyable IMO.

any comments or a questions on previous moves welcome. but future variations nees hide tags..
thanks.

- What's the advantage of D13 over B13?
- Why R17 instead of approaching first?
- Can bM16, wN17 be omitted?

Alguien wrote:- What's the advantage of D13 over B13?

my extension was an over play to initiate fight with my opponent.
i know it was an overplay and played it because i thought i was stronger player and can win easily.
for your question, they both give life but B13 is too low and getting sealed completely. i already hated my position of playing D13

Alguien wrote:- Why R17 instead of approaching first?

it is not much different..but i liked my position after his invasion.
why?? i dont know because i didnt play this.

Alguien wrote:- Can bM16, wN17 be omitted?

at this point i read all variations and 99% sure that his group is dead.
that exchang looks right shapewise. i really didnt read if it is a bad exchange because it looks right and end result was kill white.

i made a dumb ko threat on right and caused me to be in bad situations.
i think i lost this game but i still think i am stronger than my opponent.

Alguien wrote:- Why R17 instead of approaching first?

Maybe he felt his stones at k17 and R10 limited the worth of blacks thickness so didn't want to give black the option of just taking territory in the corner.