At move 13 in the first game, he made a small play. B19 is an endgame move. It threatens to undermine your corner, but it requires TWO gote moves to do it. You ignored it.
- Click Here To Show Diagram Code
[go]$$Wc Position at move 14
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$$ | . 1 . . . . . . . . . . . . . . . . . |
$$ | . X O O . . . . . . . . . . . . . . . |
$$ | . . X O . X . O . . . . . . . . . . . |
$$ | . . X O . C . . . , . . . . . X . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
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$$ ---------------------------------------[/go]
Even if you don't know the joseki, a quick glance at the position suggests that he should immediately trap your F17 stone before it hurts him. You should be happy that he bungled it.
So the last thing that you want to do is force him to make the correct move. But you did:
- Click Here To Show Diagram Code
[go]$$Wc
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$$ | . X O O . . . . . . . . . . . . . . . |
$$ | . . X O . X . O . . . . . . . . . . . |
$$ | . . X O . 3 . . . , . . . . . X . . . |
$$ | . . X 2 . . . . . . . . . . . . . . . |
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$$ | . . . . . . . . . . . . . . . . . . . |[/go]
There are two ways to exploit his error.
1) The aggressive way looks like this:
- Click Here To Show Diagram Code
[go]$$Wc
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$$ | . 1 . . . . . . . . . . . . . . . . . |
$$ | . X O O . . . . . . . . . . . . . . . |
$$ | . . X O . X . O . . . . . . . . . . . |
$$ | . . X O . . 2 . . , . . . . . X . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
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$$ | . . . O . . . . . , . . . . . X . . . |
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$$ ---------------------------------------[/go]
I find this too aggressive for my tastes. He can push southward at D15 and you can't hane because of the weakness around B17. He can continue with D14 and maybe even D13, and you still have to submit by staying on the third rank.
- Click Here To Show Diagram Code
[go]$$Wc
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$$ | . 1 . . . . . . . . . . . . . . . . . |
$$ | . X O O . . . . . . . . . . . . . . . |
$$ | . . X O . X . O . . . . . . . . . . . |
$$ | . . X O . . 2 . . , . . . . . X . . . |
$$ | . . X 3 . . . . 9 . . . . . . . . . . |
$$ | . . 4 5 . . . . . . . . . . . . . . . |
$$ | . . 6 7 . . . . . . . . . . . . . . . |
$$ | . . 8 . . . . . . . . . . . . . . . . |
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$$ ---------------------------------------[/go]
2) The more elegant way to do it is like this:
- Click Here To Show Diagram Code
[go]$$Wc
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$$ | . 1 . . . . . . . . . . . . . . . . . |
$$ | . X O O . . . . . . . . . . . . . . . |
$$ | . . X O . X . O . . . . . . . . . . . |
$$ | . . X O . . . . . , . . . . . X . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
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$$ | . . 2 . . . . . . . . . . . . . . . . |
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$$ | . . . O . . . . . , . . . . . X . . . |
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$$ ---------------------------------------[/go]
Now you are solid on the side. He can capture B18 if he wants to, but it is small, and now definitely gote.
The threat of you running with F17 is very real, so now he must play F16 to stop it.
Then you are solid on the side, and you have sente. And F17 still has some aji if you ever happen to approach along the top.
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At move 22, his B19 play still looks small. If he tries to follow up on it by capturing B18, it still is gote.
So you can keep ignoring it until the temperature is so low that saving B18 is a big move for you.
The temperature is not that low yet.
- Click Here To Show Diagram Code
[go]$$c Position at move 22
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$$ | . O . . . . . . . . . . . . . . . . . |
$$ | . X O O . . . . . . . . . . . . . . . |
$$ | C . X O O X . O . . . . . . . . . . . |
$$ | . . X O X O . . . , . . . . . X . . . |
$$ | . . X X X O . O . . . . . . . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
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$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . B . . . . . . . . . . . . . . . . |
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$$ | . . . O . . . . . , . . . . . X . . . |
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$$ ---------------------------------------[/go]
The extension shown is rather conservative. You might be able to go further.