I tried Go again

Yesterday, suddenly I want to play Go during drinking beer.
So I played 13x13 board Go.

Computer player of 10k is strong for me. I was lose.
I tried "oki ishi", then I can win computer. But It's not true win. I reduce "ishi", and I could win computer on 2shi. But I couldn't win no "okiishi" again.

Maybe I must master "huseki" and see board widely.
"Huseki" is difficult for me. It's must master when I was more younger.

I can't win, but I like Go.