Sente gains nothing, part 3: Ko calculations

One of the more common mistakes I see in any endgame-related discussion is related to the value of a kō capture. The usual touted value of ½ points only applies to the very last kō of a game; and the more knowledgeable players who have heard of the ⅓-point theory often use it wrongly in relation to other endgame values. This essay seeks to remedy the above mistakes while deepening the reader’s understanding on how endgame calculations work.

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In China, part five: Up against an 8 dan professional

Yesterday, on Saturday, was another special occasion in the Experience Go in China trip: the main organizer’s, Peter’s, teacher — an eight-dan professional — came to visit the program, and to play simultaneous games against some of the students. Six students were picked to play, including me, and the rest of the students were following my one-stone handicap game against the 8 dan in the other room, with Ben 3 dan professional commenting the game.

I started the game with my standard opening as of now, the modern sanrensei, and forced the 8 dan to invade. My handling of the invasion group was deemed a bit questionable, though not a complete failure, since I did end up getting a fair amount of territory and outside influence. I however failed to use the outside influence to attack the opponent’s positions, and seemed to fall a bit behind in territory. Later on in the game, I had to depend on two complicated ko fights to even the game. Though white seemed to be better off, he had no easy way to take the win home. Finally, white decided to ignore a big ko threat by black, and the result was pretty much decided for black’s favor. The end result was a black win by 12 points. Kifu is given below, with short comments based on what the teachers told me after the game!

[sgfPrepared id=”0″]

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Preparing for Rabbity six, part two

Hi there! Today is a time for more professional game analysis. There are already a good number of questions sent, but I’ll wait a few more days if even more appear, and then answer them at one time! Some people might’ve seen me play an interesting game against smartrobot on KGS last Monday – I’m planning on reviewing that one here a bit later, as well.

Today’s game is played by the enigmatic pro player whom I named to have had the biggest impact on my style. He’s playing black in the game – can you guess who he is? The game itself is very interesting, with many nice strategical ideas.

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