Welcome to Malcolm Schonfieldís home page on SL. My French rating is 1 kyu FFG ( page on the ffg site). I used to play on KGS with the account: ďmalcolmĒ which is around 1 or 2D. However since 2014 I mainly play turn-based Go and t-Go on littleGolem (littlegolem is the only place I know where you can play t-Go). I learnt Go in 1994 and have been a fan since then! Since 2014, Iíve been blogging occasionally about Go, partly in English and partly in French. The blog has some commented teaching games at beginner level, and a few posts that may be interesting to more advanced players. As of 2017 I have also started blogging about toroidal Go.
Apart from Go, Iím interested in lots of other things, but I wonít list them all. Still, here are a few: music, languages, ...
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Hereís a tsumego I was having problems with:
Hereís a yose problem I like with a nice double snap-back:
White canít connect with 6 because Black can make a double snap-back (see next diagram). So Black puts 4 stones in atari in sente.
A nice tsumego I saw in TrainLikeAPro volume 2
It took me ages to find this solution. I think I had a blind spot due to the following erroneous reasoning: "after 6 white has two eyes and is therefore alive. There is no need to look any further". Lesson to be learned: two eyes are sometimes not enough! Or: beware of damezumari!
An alternative. Black 7 at 5, White 8 at 3. After 9 a and b are miai.
This problem is old: it figures in Xuanxuan Qijing where in the version I have itís problem number 4 (of 347 problems...).
Hereís a nice tsumego I found in an old volume of the french Go magazine RFG (n¬į 89, 2000), in an article by Pierre Audouard. It took me about 15 minutes this morning to solve!
Hereís an under-the stones tsumego from TrainLikeAPro volume 2. It took me days to realise why "a" is wrong - another damezumari I missed.
6: Unusual tsumego from TrainLikeAPro
31-1-07 : Iím completely stumped by the following problem from TrainLikeAPro, vol. 1, day 2.
unkx80: The first answer that comes to my mind is . No, this is not a typo.
I did consider . But if in this diagram, what else is there but ? Then, white lives with .
unkx80: This means that I made a reading typo when suggesting in the previous diagram. Right now I see no solution to your .
This position comes from a 9 stone handicap game I played recently. In the game, the marked black stones were under attack. But 1 is a nice tesuji to escape. Credit goes to Motoki for pointing it out. 07-04-18
unkx80: I thought, there might be multiple solutions to this problem. If at , then and , which reverts to one of your earlier diagrams.
Malcolm: Yes, youíre right. Thanks for the comment.
The following classical problem is in the Xuanxuan Qijing collection.
After 7 White has to live, and then Black has a tesuji at a which captures the marked stone and makes an eye.
However there seems to be a variation leading to Ko if White plays 4 differently:
I wonder if Black can do any better...
Suggestion by flon (no sensei page, sorry): It seems that Black is dead against white 2, setting up an ishi no shita:
Flon: I canít find any solution for Black. I checked the Xuanxuan Qijing, but didnít find this problem ;-).
Malcolm, 071212: Thanks Flon. Youíre right, there isnít any solution for Black. I made a mistake copying the problem diagram from Xuanxuan Qijing Problem78. There, White has one less liberty which makes all the difference.
However, in the following variation Black seems to get a ko.
After 9, a through to d seem to give a ko.
Am I missing something?
2007-12-14: Iíve found more detail on this variation here.
2008-02-09: Finally reached a conclusion on this problem. More details here. Credit where creditís due: I did get some help from Ang LI 3p...
(2007-08-01). I got this problem from the mailing list of problems by Fan Hui, organised by the FFG (Fťdťration FranÁaise de Go). Itís supposed to be around 5D level.
After weeks of looking at the problem every now and then and not getting anywhere, I finally found the solution. I havenít looked at Fanís solution. As there are several variations I jotted them down as follows in my handy little Go notebook:
d ( e g! ( f a | a f c b ) | a f ( g e | e g c b ) | b c ( ( e | f ) g | a f ) )
"|" means "or". "!" means "tesuji".
Itís not easy to read, but it seems to me to be a concise way of writing a non-trivial set of variations.
2007-10-12: This notation now has its own page.
11: Blog about Xuanxuan Qijing
(2007-09-27). I printed out the entire colection from the pdf file at tsumego.tasuki.org, and Iíve been going through the problems. I now have a new goal: work through all the problems and understand each one. Maybe Iím optimistic, but I reckon it should be do-able (within a couple of years). So far Iíve looked at about 75% of the first hundred odd problems. There are some real gems. There is a solution file, but it doesnít give many variations. Thatís not necessarily a bad thing, as it means one has to figure things out for oneself. I would recommended it heartily for dan-level players.
At least one of the problems has "Black plays tenuki" as the the correct answer. The solution diagram explains why Black canít do anything locally. Itís an unusual type of problem (Black to play, White lives)...
2007-12-28 : The problem I was talking about with tenuki as the solution: (Xuanxuan Qijing Problem 3).
(2007-12-14:) Here are a few pages I started on SL, in no particular order: Lim Yoo Jong, Superpower Go, L'‚me du Go or Four basic shapes, Audouard Coordinates, Pierre Audouard, Center Oriented Players, Concise Problem Notation, History Of Go In France 1965-2007.
Oct 2017: Toroidal-Go
13: Coming soon: more on the elephant's jump
(2007-12-28:)I would like to compile some examples of the elephant's jump on SL, from real play. I have in mind a recent game of Lee Sedolís. Also thereís a position from the opening of one of my games Iíd like to look at too. I hope to get that done in january.
- My Go blog, partly in English and partly in French.
- Here are some things unrelated to Go I have on the internet. Take a look at the proverbs (FR, EN), I think theyíre funny. As for the music part, itís only work in progress and Iím not very happy with the recordings Iíve put on it...
- Also you can find me on facebook.