My biggest problem with this game was move 158. I think I should have played at J14, which would probably give me a way to save the K19 group later on, but I decided to ask here because you guys will probably know better than me.
Move 199 is also annoying me. I should have played there in my previous move instead of that F1 stones. That situation cost me a lot more than it should have.
Feel free to point out any other mistakes as well, because I'm sure there are many (disregard the last move, it was a mix of stupidity, not thinking, and paranoia).
Warning: Boring beginner game
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Joaz Banbeck
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Re: Warning: Boring beginner game
8: You fell into a classic opening trap, which, fortunately, your opponent did not know how to exploit. You should play the solid E16 here.
9: He should play B17. It threatens to connect underneath with B16. So you would have to play B16 yourself. Then he counter-cuts at E16. It turns out that white is rather safe with a wall at his back, whereas black has a white stone in exactly the wrong position.
A digression on shape:
After white cuts, some black stones will die.
I recommend setting up a board with this position to convince yourself of that fact.
14: On the left end of this fight, B17 and C15 are miai for you, so you can't lose there. But G17 is big for him to get out at the right end, so you take it first.
18: This is aji keshi. That is, you are losing aji. Before you played this move, you had a ko threat ad C18 or D18. Now you don't have it any more.
20: This is a 1-point move. In gote. There are big moves about. G17 is my favorite locally, and maybe the best on the board.
21: Fortunately for you, he doesn't realize that he could have ignored your last play.
22: Good idea, but not quite the best. G17 is almost as aggressive, and it leaves no weaknesses in your position. ( If he wants to crawl along the second line while you march along the third, you should be delighted to comply. Your resulting influence is worth more than his territory )
23: Hehehe. You bluffed him again. But don't make a habit of this. As you get stronger, you can't count on your opponents being so gullible.
24: This is premature. As a general rule, when a lone 4-4 corner is invaded, and the resulting joseki is played, the invader's territory is worth less than the defender's outside influence. Sorry, but I can't really prove this to you. I ask you to take it on faith until you become stronger and it will then be self-evident.
Usually, to contest the corner, you would do best to approach with R6 or O3.
36: Again, the same theme: you are leaving a cutting point. The solid play at J16 is better.
48: Why leave a weakness for him to push through? Play solid with E4 or D5.
It is bedtime for me here. Maybe I'll have time to finish tomorrow.
9: He should play B17. It threatens to connect underneath with B16. So you would have to play B16 yourself. Then he counter-cuts at E16. It turns out that white is rather safe with a wall at his back, whereas black has a white stone in exactly the wrong position.
A digression on shape:
After white cuts, some black stones will die.
I recommend setting up a board with this position to convince yourself of that fact.
14: On the left end of this fight, B17 and C15 are miai for you, so you can't lose there. But G17 is big for him to get out at the right end, so you take it first.
18: This is aji keshi. That is, you are losing aji. Before you played this move, you had a ko threat ad C18 or D18. Now you don't have it any more.
20: This is a 1-point move. In gote. There are big moves about. G17 is my favorite locally, and maybe the best on the board.
21: Fortunately for you, he doesn't realize that he could have ignored your last play.
22: Good idea, but not quite the best. G17 is almost as aggressive, and it leaves no weaknesses in your position. ( If he wants to crawl along the second line while you march along the third, you should be delighted to comply. Your resulting influence is worth more than his territory )
23: Hehehe. You bluffed him again. But don't make a habit of this. As you get stronger, you can't count on your opponents being so gullible.
24: This is premature. As a general rule, when a lone 4-4 corner is invaded, and the resulting joseki is played, the invader's territory is worth less than the defender's outside influence. Sorry, but I can't really prove this to you. I ask you to take it on faith until you become stronger and it will then be self-evident.
Usually, to contest the corner, you would do best to approach with R6 or O3.
36: Again, the same theme: you are leaving a cutting point. The solid play at J16 is better.
48: Why leave a weakness for him to push through? Play solid with E4 or D5.
It is bedtime for me here. Maybe I'll have time to finish tomorrow.
Help make L19 more organized. Make an index: https://lifein19x19.com/viewtopic.php?f=14&t=5207
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jts
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Re: Warning: Boring beginner game
I'll pick up where Joaz left off, more or less (albeit at a much lower level 
)
All right, now it's my bed time.
Maybe I'll add more tomorrow.
)
, and then again on 
) when your opponent has a strong shape and you don't is kinda greedy: instead of securely gobbling up the third line, you create weaknesses your opponent can profit from. I suspect that both 
, and 
were caused by having too little respect for the value of the second line, and 
. But secondly, you're voluntarily giving yourself the "hane at the head of two stones" shape. The ends of a line of stones are the best places for it to continue developing. When you hane at the head of two stones, you've cut off nearly half of their potential for development. Backing yourself into this position on purpose is madness - well, you should at least have a very special goal in mind when you do it.All right, now it's my bed time.
Maybe I'll add more tomorrow.-
EdLee
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shyin
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Re: Warning: Boring beginner game
Thank you all for your replies! I can see a lot more mistakes that I shouldn't have made now. Guess I need to keep playing as much as I can. (Also, EdLee, I know go isn't boring, but I have a slight suspicion my games will probably be boring to someone stronger, i.e. pretty much everyone in this forum 
)
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EdLee
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jts
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Re: Warning: Boring beginner game
shyin wrote:Thank you all for your replies! I can see a lot more mistakes that I shouldn't have made now. Guess I need to keep playing as much as I can. (Also, EdLee, I know go isn't boring, but I have a slight suspicion my games will probably be boring to someone stronger, i.e. pretty much everyone in this forum
You'd actually be surprised. Professional games are really exciting because of the unexpected, ambitious, daring, brilliant, stylish moves that the players make. But a beginner's games can actually be very intense for other players to go over, because new players create many weaknesses in their positions, leave strategically valuable points open, and leave life and death positions unsettled. It's a little bit like watching a horror movie ...... "Oh my god, don't go in the kitchen don't go in the kitchen, don't....
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shyin
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Re:
EdLee wrote:And I was referring to your game, not Go.shyin wrote:I know go isn't boring, but I have a slight suspicion my games will probably be boring to...)
Oh, damn my reading comprehension!
jts wrote:You'd actually be surprised. Professional games are really exciting because of the unexpected, ambitious, daring, brilliant, stylish moves that the players make. But a beginner's games can actually be very intense for other players to go over, because new players create many weaknesses in their positions, leave strategically valuable points open, and leave life and death positions unsettled. It's a little bit like watching a horror movie ...... "Oh my god, don't go in the kitchen don't go in the kitchen, don't....
I can imagine. Yesterday during a game both me and my opponent missed the fact that I had a bent three shape almost completely surrounded by his stones and instead of killing it by playing the middle point, he tenuki'd. And even worse, I responded to his tenuki instead of making those stones live! We didn't notice until much later in the game.-
cyclops
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Re: Re:
shyin wrote:. ..... Yesterday during a game both me and my opponent missed the fact that I had a bent three shape almost completely surrounded ......
The bent three shape should be in the rules !!
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illluck
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Re: Warning: Boring beginner game
Just a quick addition to Joaz's comment for move 9: the hane is actually often better than the descent (depending on situation, of course) - your opponent's error is move 11 - should just be to connect.