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SoDesuNe paves his road to Shodan

https://lifein19x19.com/viewtopic.php?t=977

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Re: SoDesuNe paves his road to Shodan

Posted: Mon Nov 04, 2013 9:22 am
by SoDesuNe

Code: Select all

Book               1. Run (correctly solved [%])      2. Run                     3. Run                     4. Run (*four months later*)
YCH Tesuji 1     //     116 / 123 [94%]      |      98 / 123 [80%]      |     115 / 123 [93%]      |     111 / 123 [90%]      
YCH Tesuji 2     //     119 / 123 [97%]      |     107 / 123 [87%]      |     118 / 123 [96%]      |    - accomplished -      
YCH Tesuji 3     //      97 / 123 [79%]      |      97 / 123 [79%]      |     107 / 123 [87%]      |     101 / 123 [82%] 
YCH Tesuji 4     //     119 / 123 [97%]      |     120 / 123 [98%]      |    - accomplished -      |    - accomplished -      
YCH Tesuji 5     //      75 / 123 [61%]      |     *85 / 123 [69%]*     | 

YCH Tsumego 1    //     121 / 123 [98%]      |     115 / 123 [93%]      |     120 / 123 [98%]      |    - accomplished -      
YCH Tsumego 2    //     110 / 123 [89%]      |     113 / 123 [92%]      |     115 / 123 [93%]      |     113 / 123 [92%]
YCH Tsumego 3    //     101 / 123 [82%]      |     105 / 123 [85%]      |     114 / 123 [93%]      |     108 / 123 [88%]
YCH Tsumego 4    //      69 / 123 [56%]      |      74 / 123 [60%]      |      92 / 123 [75%]      |      89 / 123 [72%]      

GS Opening       //        n/a               |     131 / 175 [75%]      |     144 / 175 [82%]      |     149 / 175 [85%]      
501 Opening      //        n/a               |     340 / 501 [68%]      |     372 / 501 [74%]      |     387 / 501 [77%]

G/S Tesuji 1     //      83 / 163 [51%]      |


Ohhhkay : D
I'm through with Go/Segoe Tesuji Dictionary vol. 1 and as you can see I barely managed to solve half of the C (44) and B (119) problems - there are 163 A problems, too, which I didn't try. This is officially the worst score so far in any problem book. Good that we are incorrigible optimists! It can only go upwards from here on with lots of space for improvement! ^^

I also try to play games regulary, one to three a day, and get reviews for my lost ones. It's an up and down right now. Although it's safe to say that anytime I recieve handicap I lose for sure. Can't get my head around the fact that handicap stones make me play so aweful (some recent examples are below). Maybe a DDK, weak SDK trauma?
In the rest of the games I feel I play very unbalanced, which is good insofar as I'm trying out a lot of things, mostly fighting related because this is a really weak part of my Go. I also try to incorporate ideas I get through replaying professional games, not always with success but well, at least one experience richer =D
It's also quite funny that I find myself in Byo-Yomi quite fast, when I actually thought I played reasonable quick. Guess I concentrate harder than I'm aware of - although that makes actually a lot of sense : D

Overall, I feel the development goes in the right direction. I wonder where I will end when the waves have calmed : )

For now I will start 1000 Weiqi Problems, so logan and everyone else, who would like to join: Ready. Set. Go!

    1. YCH Tesuji vol. 1
    2. YCH L&D vol. 2
    3. Get Strong at the Opening
    4. YCH Tesuji vol. 3
    5. YCH L&D vol. 3
    6. YCH Tesuji vol. 5
    7. YCH L&D vol. 4
    8. 501 Opening Problems
    9. Go/Segeo Tesuji Dict. vol. 1
    10. 1000 Weiqi Problems





Re: SoDesuNe paves his road to Shodan

Posted: Tue Nov 05, 2013 12:57 am
by SoDesuNe
I re-uploaded the games above with some comments from a friend.

Re: SoDesuNe paves his road to Shodan

Posted: Wed Nov 06, 2013 12:56 pm
by SoDesuNe
I solved the first section of the first half today (of 1000 Weiqi Life and Death 1000 Problems). In the beginning I thought this will be an easy walkover but after the first 50 problems the difficulty started to increase. In the 90ies I got my first wrong problem and the last douzen were really tough. Overall 110 correctly solved so far ^^

Second section here I come!

Re: SoDesuNe paves his road to Shodan

Posted: Fri Nov 08, 2013 4:28 am
by SoDesuNe
It would be interesting to know how unique the problems in 1000 Weiqi Life-and-Death Problems are. There are certainly quite a few brillantly composed ones but I've seen/solved a lot of them already before (question is, who borrowed from whom?). Still a nice check-up, though and good problems don't get bad if you solve them again, quite the opposite =)

I guess, I'll finish the second section (killing!) today.

Re: SoDesuNe paves his road to Shodan

Posted: Fri Nov 08, 2013 8:12 am
by logan
Ok, I'm not falling behind. Good.

If you have any questions about the problems, let me know.

You should encounter your first diagram & solution errors soon.

Problems I liked:

Click Here To Show Diagram Code
[go]$$Bm1 94. Black to play
$$ . . . . . . . . . . . |
$$ . , . . . . . , . . . |
$$ . . . . . . . . . . . |
$$ . . . . . . O O O O . |
$$ . . . . . O . X X X . |
$$ . . . . . O . . O X . |
$$ . . . . . O . . X X . |
$$ . , . . . O . , X O O |
$$ . . . . . O X . X O . |
$$ . . . . . O X . X O O |
$$ . . . . . . O . O O . |
$$ ----------------------[/go]


Click Here To Show Diagram Code
[go]$$Bm1 98. Black to play
$$ . . . . . . . . . . . |
$$ . , . . . . . , . . . |
$$ . . . . . . . . . . . |
$$ . . . . . . . . . . . |
$$ . . . . . . . . . . . |
$$ . . . . . . . . . . . |
$$ . . . . . . . . O O . |
$$ . , . . . . O O X X . |
$$ . . . . . O . X . . . |
$$ . . . . O . . . . . . |
$$ . . . . . . . . . . . |
$$ ----------------------[/go]


Click Here To Show Diagram Code
[go]$$Bm1 108. Black to play
$$ . . . . . . . . . . . |
$$ . , . . . . . , . . . |
$$ . . . . . . . . . . . |
$$ . . . . . . . . . . . |
$$ . . . . . . . . . . . |
$$ . . . . . . . . . . . |
$$ . . . . . . . . . . . |
$$ . , . . . O O O . O . |
$$ . . . O . X X X O X . |
$$ . . . O X . O X O . . |
$$ . . . . X O . . . . . |
$$ ----------------------[/go]

Re: SoDesuNe paves his road to Shodan

Posted: Fri Nov 08, 2013 11:40 am
by SoDesuNe
Yeah, problem 98, I got wrong ^^ Problem 94 is one of those with an "invisble move". I often have a fairly good instinct for starting points but some of the quiet, patient moves elude me frequently. Problem 108 was no problem for instance, it just needed time to sort the variations.

Do you mind telling me which solution diagrammes are wrong? :o

Re: SoDesuNe paves his road to Shodan

Posted: Sun Nov 10, 2013 6:53 am
by logan
SoDesuNe wrote:[...] Problem 94 is one of those with an "invisble move". I often have a fairly good instinct for starting points but some of the quiet, patient moves elude me frequently.
Then 154-62 are right up your alley :)

SoDesuNe wrote:Do you mind telling me which solution diagrammes are wrong? :o
170 has a missing stone; 185 has a suboptimal solution; 223 has a false Failure diagram.

I circled a bunch a couple of years ago, but have only reconfirmed these so far.

Re: SoDesuNe paves his road to Shodan

Posted: Sun Nov 10, 2013 11:06 am
by SoDesuNe
154-162 weren't that difficult surprisingly because after the first two, ones gets to guess the right first move quite fast =D Nevertheless I still failed two problems.

Problem 185:
Click Here To Show Diagram Code
[go]$$Bc
$$ . . . . . . . . . |
$$ . . . . . . . . . |
$$ . . . . . . . . . |
$$ . . . . O O O O . |
$$ . . . . O X X X . |
$$ . . . X O O X . X |
$$ . . . X X X O X . |
$$ . . . . X O O O X |
$$ . . . . . . X O . |
$$ ------------------+[/go]

I was also surprised by the solution diagramme. My first idea was connecting T3 but I only enlarge a potential Ko-threat with this. So then I thought one left to the solution diagramme seems best.


Regarding problem 223, I have to admit I don't see the error ^^ But as long as the solution is correct, I guess this is a minor flaw.

I'm now at the 253rd problem... and I'm really bad at liberty races : /

Re: SoDesuNe paves his road to Shodan

Posted: Sun Nov 10, 2013 11:50 am
by RBerenguel
SoDesuNe wrote:154-162 weren't that difficult surprisingly because after the first two, ones gets to guess the right first move quite fast =D Nevertheless I still failed two problems.

Problem 185:
Click Here To Show Diagram Code
[go]$$Bc
$$ . . . . . . . . . |
$$ . . . . . . . . . |
$$ . . . . . . . . . |
$$ . . . . O O O O . |
$$ . . . . O X X X . |
$$ . . . X O O X . X |
$$ . . . X X X O X . |
$$ . . . . X O O O X |
$$ . . . . . . X O . |
$$ ------------------+[/go]

I was also surprised by the solution diagramme. My first idea was connecting T3 but I only enlarge a potential Ko-threat with this. So then I thought one left to the solution diagramme seems best.


Regarding problem 223, I have to admit I don't see the error ^^ But as long as the solution is correct, I guess this is a minor flaw.

I'm now at the 253rd problem... and I'm really bad at liberty races : /


Solution for 185?

Re: SoDesuNe paves his road to Shodan

Posted: Sun Nov 10, 2013 12:02 pm
by SoDesuNe
Well, you have to at least try first =D

Re: SoDesuNe paves his road to Shodan

Posted: Sun Nov 10, 2013 12:33 pm
by RBerenguel
Editing diagrams on iPad is tricky. Have an idea, but I hate semeais...

Re: SoDesuNe paves his road to Shodan

Posted: Sun Nov 10, 2013 12:47 pm
by SoDesuNe
Then go with coordinates : )

Re: SoDesuNe paves his road to Shodan

Posted: Sun Nov 10, 2013 1:47 pm
by RBerenguel
Q1 twice

Re: SoDesuNe paves his road to Shodan

Posted: Sun Nov 10, 2013 1:53 pm
by SoDesuNe
RBerenguel wrote:
Q1 twice


That's the suboptimal solution in the book, yes ; )


Hint:
Question is: Do you need to sacrifice another stone?

Re: SoDesuNe paves his road to Shodan

Posted: Sun Nov 10, 2013 2:29 pm
by Kirby
Re: 185

Presumably you refer to P1 being better than Q1, but why? With P1, white can play Q1. If black wishes to avoid seki, he must fill T3. White gets T6 sente. Then black must fill T1. White en has T5 sente. Black captures at R1. Net result: black captures 6 stones and has point at S4 for 13 points, and white has a capture for a net of 12 points.

Contrast this with Q1. White T6 can be responded to with T5, and black no longer must fill T3 and T1 to avoid seki. Black has 5 captures plus S4, T3, and P1, giving 13 points. Similar result if white captures at P1.

I think Q1 is better. Does this analysis differ from yours?
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