I came back to Japan.

I couldn't have internet access over 1 month, because I moved out Manila and came back to Japan in last March. I may be not able to write in my blog like I used to, because I started work again. I try writing in my blog every 2 weeks.

I review a match in the 2 months.

My 73th KGS game (vs [7k], Komi: 0.5, B)

I captured the white big group in the lower side. I thought I would never lose the match. But I took many mistakes after that.

I played wedge at O16 after the white move marked square. It's unconsidered play. I was captured the black group in the upper right corner. I had to play attachment at A.

I was captured 2 stones marked square, although I captured the white group marked triangle. I lost big territory, because the white group marked triangle made from an impossible invasion in my moyo.

At last, I mistook a tesuji. Of course I had to play throw-in at E1.
I couldn't play correct move, although I studied tesuji everyday over 3 months...
But I won by 14.5 points owing to the saving in the lower side.

All moves are here.

I don't like ko. However...

I'm not good at ko. I have won ko few times.

My 63th KGS game (vs [7k], komi: 0.5, B) 

I got greedy, when the white played jump at H4. I played attachment at B. I had to play knighte's move at A. If I played so, the black group in the lower side could live easily.

After all, it became ko because of my greed...

The opponent avoided ko in the lower side. It's lucky for me.

However I played bad move. I connected at B, when the white played ate. I misunderstood the number of liberty of the Q6 black group. I could play connection at A.

It became ko again...

When I played first ko threat, the opponent didn't play in time. Fortunately I won.

All moves are here.

I have two ko threats more at the points marked triangle. The opponent has only one ko threat at the point marked square. But the points marked A and B may work as ko threat of the white.

When the white play the ko threat at A, if I connect at 2, the black will win the fight by the order of moves.

About at B, the black group in the left side will live by the sequence of moves.

In conclusion, neither A nor B works as ko threat. However I'm unconcern of my ability to play the correct order of moves. I was very lucky to win.

A tesuji decides the outcome of a game.

I study tesuji with some books lately. That's why, I became to be able to look at some tesuji in some games.

My 59th KGS game (vs [4k], 4 stones game, B) 

I could capture the N6 white group by a tesuji. It's a result of the study. I was very happy. But...





When the white played parallel move at O18, I played descent at B. If I played block at A, I would win easily. It became a complicate fight in the game, although.

When the white played cut at Q15, I couldn't find a nice play in time. I lost by running out of time.

Can you find a tesuji in this situation?






Yes. If I played turn at O19, I could win the fight. Tesuji is terribly important. When both player play many tesuji in a game, it will be a beautiful and interesting game.

The game was a really exiting game for me, although I lost! 

All moves are here.

We thought the game had finished. However...

When I captured a big group of the opponent, I get used to think I will win the game. Many players probably think so. But of course it's not always true. 

My 57th KGS game (vs [13k], 4 stones game, W)

The opponent resigned in this situation, because the M11 big black group was dead. I thought the decision was correct. However...

If the black had played to interrupt at E7, the white group marked triangle was dead. If so, the game came from behind.

I had not to play to brak an eye  at N8, but to play to connect at E7, because the M11 black group couldn't have two eyes, even if I played tenuki.

And I made a computer play as the white to check wｈether there was a sequence of moves with which the white group marked triangle could live or not.

The computer found a completely different play. 
If the white play to approach at S13, the black group marked triangle can not make two eyes!
I was not aware of it completely.

In the end, the decision of the opponent resigning was correct, because the play of the white to connect at E7 and to approach at S13 were miai. That is to say, the game had finished.

All moves are here.

An idle mind is the debil's workshop.

I will make thickness in the center. That's why I will attack invading stones in my thickness. 

My 56th KGS game (vs [7k], 2 stones game, B)

I had thought that I could easily kill the white group in the center before white playing attachment at L7.

I read block at L6 first. It would happen the battle of ko at A, because the black would be cut at M6. 

That's why I played wedge at L8 without thinking.

The white group easily connected to the group in the lower side...

On the contrary, the black group in the center was in clutch.

Fortunately, the black group escaped death, because of some mistakes of the opponent. And I won.

All moves are here.

I have to think much further.

Good bye Diamond!

I'll stop to use the Diamond Opening, because it must lead to the Cosmic Style. I love the Cosmic Style. It's difficult to make full use of it, though. 

My 46th KGS game (vs [10k], Komi: 0.5, W)

I made thickness in the center. That's why I thought I was leading. However...

The opponent broke the white fence at the right side from paying wedge at A. Although I thought  it was even at that time.

However the white fence at the left side was broken too...

I resigned. All moves are here.

The Cosmic Style is too difficult! I'll stop to use the Diamond Opening!

Good bye the Diamond Opening!

Ko is so difficult.

I'm weak on ko. I feel myself compelled to make ko without thinking. I always lose ko, because I make a mistake in some ko threats. How about you?

My 44th KGS game (vs [5k], 4 stones game, B)
 

This is the situation that I tried ko at O12. I thought that the ko was important for the white rather than me.

However, I made a mistake in response to a ko threat of the white. I had to play not extend at 2 but atari at 3.

After that, I thought that I had to win the capturing race of O10 black group against Q11 white group.

That's why, I played the block at S12. However, it's losing move, because the white captured the ko at the next move. I had to connect the ko at A before playing the block. If so, I would win the capturing race.

After all, I resigned.

All moves are here.

I lost the game too because of losing a ko.

I dislike ko!