Nederlands Kampioenschap Shogi 2018

4 maart 2018

De Nederlandse Shogi Bond nodigt u uit voor het NK Shogi 2018.

Uitslag:

Het kampioenschap vindt plaats zaterdag 14 april op de volgende locatie
Paviljoensgracht 33
Den Haag

Deze locatie is zeer goed te bereiken met het OV. Parkeren in de buurt is echter betaald

Toernooi schema
1000-1030 Registratie en opening
1030-1130  Ronde 1
1130-1300 Ronde 2
1300-1330  Gratis Lunch
1330-1500 Ronde 3
1500-1630  Ronde 4
16:30-18:00 Ronde 5
1800-1900  ALV

Registratie
Aanmelden voor het toernooi kan tot uiterlijk 10 april 2018 (i.v.m. loting).
Het NK Shogi is open voor leden van de Nederlandse Shogi bond. Verder mogen hier alleen 1) Nederlandse ingezetenen en 2) mensen die langer dan 1 jaar woonachtig zijn in Nederland in de afgelopen periode aan deelnemen.

Geïnteresseerden, die nog geen lid zijn van de NShB kunnen dat nog worden door de contributie over te maken naar het rekeningnummer hierboven en zich aan te melden via info@shogibond.nl voor 10 april. De contributie kan eventueel contant voldaan worden tijdens het NK.

Aanmelden kan bij
Tom Kau,
mobiel 06-23015119
e-mail: washbord@gmail.com
of via: e-mail: info@shogibond.nl

Contributie voor 2018
De contributie van 2018 is €12.50. Deze kan worden overgemaakt naar:

NL56 INGB 0000 1134 72
t.n.v. Nederlandse Shogi Bond
Maasmechelen (België).

 

Toernooi regelgeving
Het NK wordt onderverdeeld in een hoofd- en een bijtoernooi. Het hoofdtoernooi is een knock-out toernooi.

Het aantal ronden en de hoeveelheid bedenktijd is afhankelijk van het aantal deelnemers:
• Bij maximaal 8 deelnemers blijft dit beperkt tot 3 ronden (1 uur + 30 sec. byoyomi)
• Bij 9-16 deelnemers worden er 4 ronden gespeeld (45 min + 30 sec. byoyomi)
• Bij 17-32 deelnemers worden er 5 ronden gespeeld (eerste twee ronden, 30 min + 30 sec, ronden 3,4,5 bedenktijd 45 min + 30 sec.)

In geval van eventuele bye’s zullen die worden toegekend aan:
• Regerend kampioen
• Verliezende finalist
• Verliezende halve finalisten
• Overige bye’s door loting
De eerste vier van de eind ranglijst van het NK 2017 zijn geplaatst op de eerste plekken van de loting, indien deze spelers deelnemen.
De verdere indeling wordt aan de hand van de laatst geldende ELO lijst gedaan.

 

How to analyze your games using a shogi engine

24 januari 2018

Setting up the software
The first thing to do is to make sure you have ShogiGUI running with an engine. In an article of Mr. Takahashi it is described how to do this.
If you get the Gikou engine to work, great. This is one of the best engines. If you want to perfectionize, please check this or this article about how to install an even stronger engine. But those who are not comfortable with advanced computer magic rest assured: Shogi GUI with the default book and Gikou engine is already a wonderful tool! After starting the engine and opening the default book, it will look like this:

Getting your game in
Of course you can start moving around from the initial beginning and analyze shogi like this, but you might want to load a game in to analyze this with the engine. This can be done in a couple of ways, also depending on where you get it from. In 81Dojo there is a Kifu menu where you can save it as KIF or copy it to the clipboard. Then you can respectively load it in ShogiGUI using File-Open or paste it with Ctrl+V or Edit-Paste Notation. In case you played your game on ShogiWars, you can load the game using the app PiyoShogi on your mobile. Then you can copy to KIF, which you can then e.g. email to yourself, open on your computer and paste in ShogiGUI.

Understanding ShogiGUI
So there a lot of numbers, moves and variations, but how to interpret those?

Let’s focus on the book first. If the position is still in book, under book the moves are listed which were played before. Under Games you can see how often it was played, and under Winning% how succesfull this move was, from the perspective of which colour plays this move. So e.g. the move S57 scored 3 out of 5 wins. The move I played was P86, so here I diverged from the book moves.
Under the consider tab you can see the candidates suggested by the engine. There is also some information about thinking depth and thinking power, but those are not so relevant. In this case I have 4 candidates, and they are sorted by how strong the engine thinks the moves are:
1.S57(231)
2.B77(231)
3.L98(210)
4.P36(158)
The score is always for Sente, so (231) means that Sente is a bit better.
From the variations it seems, that instead of P86, which signals a Tower Mino, the engine prefers to make an Anaguma with moves like B77, K88, L98, K99, S88, G68, G78, G79.
That my move P86 didn’t appear here doesn’t mean it is bad. I think Tower Mino is perfectly playable in this type of positions, in just happens that the engine prefers the Anaguma castle. You can get an idea of how good or bad a move is by checking the evaluations one move later:

Here the engine recommends playing G41-52 for Gote, with an evaluation of (51). It means that Sente is still a bit better according the engine. An evaluation difference of 180 points is actually not that big, and this case it can be explained by a certain preferene of the engine from one castle over the other. Let’s look at a more critical example.

Improve your game by analyzing with the engine

In this position the confrontations have begun. I have a Tower Mino with 4 generals, and initiated the battle with Knight and Bishop. Gote has a nice High Mino and countered in the centre. I can catch the Silver here with P*56, but saw that my opponent could create counter play with P*66 G57 Nx65 etc., sacrificing the Knight. I thought it would be smart to insert P24 here, so later my Rook could dash forward.
The engine however indicates that the evaluation would drop from (969) to (0), compared to the highest recommendation, which is the direct P*56. A difference of about 1000 points can be considered a mistake.

Understanding and improving
So if something like this happens it is very understand to understand:
“Why was my move not as good as the best move”?
To understand this, it is a good idea to following for both lines the moves that the engine recommends first. For example, we can look at the line that is recommended by the engine, the immediate P*56. Looking a bit further, this indeed gives Sente a nice advantage. But isn’t including P24 Px24 a nice improvement over this line? After putting P24 on the board, it turns out that Px24 was not forced:

Looking at the suggestions for Gote, we don’t see Px24 in the first 4 moves. In fact, the 4 moves suggested all ignore the Px23+ threat and shift focus in the centre. As it turns out, P24 was played too late! When analyzing these lines, it indeed turns out that Gote has a nice control in the centre, and that Px23 will not be that severe. This reminds me of Hidetch’s words in the Glance Series: Play P24 before it’s too late. Too late means that it can be ignored and Ranging Rook side uses the time instead to counterattack in the centre. It also reminds me of Aono’s chapter in Better moves for Better Shogi: “Eradicating Reflex moves”. Sometimes a move looks forced, but it is important to always think if it is really forced and whether there is a better move. You can of course boost your progress even more when studying such books in parallel to analyzing your own games!
For the full game see this 81dojo-link.

Tips and tricks
-Save your analysis for future reference.
-If you notice the engine plays in a certain way in the opening, try it out in a real game!
-Try to improve over common joseki by using engine’s recommendations. Try to understand the differences by analyzing and playing.
-When understanding something, you can add a comment in ShogiGUI. It will help to understand and remember!
-Use an external back-up from time to time for the files you create in ShogiGUI.
-Don’t get blind by looking at the numbers only, always try to understand why a certain move is good or bad and check the moves yourself before playing them.

Game analysis of Spain-Netherlands in WSL B 2017

31 december 2017

The Netherlands have finished the World Shogi League season well with 7 won matches out of 9 in the B division. We are on the first place currently, but Denmark could still pass us if they win their remaining games.
In the last round we beat Spain with 2-1. Daniel Arús took the lead for Spain by beating Ritchy Höhne.
Ritchy Höhne – Daniel Arus 0-1 17 december 2017

Daniel initiated the fight and in this position he got a strong point in the centre. Ritchy tried to challenge this with P*66, but had to accept a Silver-Knight exchange after N85. There followed Px65 Nx77 Bx77 B73 N*85 Bx84 P64 G53 B86 leading to the following position:

Daniel used his Gold to control the advancing Pawn, while Ritchy protected it with B86. Now Daniel blocked the Rook by dropping a pawn on 66. He then proceeded with taking the Pawn on 64. Ritchy sacrificed his Bishop for the Gold, but Daniel’s attack was quicker.

Wouter de Haas – Jona Ruiz 1-0 27 december 2017
On board 2 there was an exciting battle between Wouter de Haas and our Spanish friend Jona Ruiz. Jona was succesful on the second file, but Wouter shifted the focus to the centre.

In this position the counter attack of Wouter is already quite strong. He showed an interesting concept here by playing B55. Now, he threatens Px73 Gx73 P*74, while the Bishop cannot be taken. so the pressure on the diagonal is very strong. Jona answered S63, and after S*75 Sx54 Px73 Gx73 Bx73+ Kx73 Rx54 the Bishop has been exchanged for two Generals and Jona’s King is very open.
However, he managed to run away.

Wouter had been chasing the King, but now Jona chose the wrong route. I think after K24 it would have been very difficult to catch the King, and Jona would have a good chance for an entering King. However, he went to 12 with his King and this gave Wouter a chance to continue his attack with P*23. After Rx23 +R72 P*22 N15 Rx29+ P*23 Wouter got a very strong pressure on the second rank. In fact this pressure is very similar to the one in the previous position with the Bishop’s diagonal. Also in this position, he kept pressuring with successive Pawn drops, this time on 23. Wouter won a lot of material, and mate followed soon.

So the decisive game was between me and Diego Gonzalez. Note that he has a nice blog about Shogi!
Diego Gonzalez – Twan Burg 0-1 30 december 2017
As usual, I prepared for my opponent, and saw that he was playing Static Rook and often did an early Bishop Exchange, even when he would lose his turn to move. Being very familiar with a type of position can certainly be more important than one move in the opening. However, I made sure that I was ready for this type of position too, and analyzed it a bit with the engine. I saw that the engine would often go for Rapid Advancing Silver in Bishop Exchange. And that the position would be quite playable, even when the opponent goes for Reclining Silver, which is the best countermeasure according to the video of Hidetch. So I decided to analyze it a bit and go for it, I liked also the directness of this variation.


In my preparation I saw that P75 sometimes needs to be prepared by K31 first, to protect the Knight. We will soon see why. However I also saw that in some positions this is not necessary. I felt that his shape was not ideal, with a sitting King, so I decided to go for it.
After P75 Px75 Sx75 P24 Px24 P*25 his idea is that I cannot take on 25 because Rx25 would be a Silver-Knight fork. So I continued my attack with P*76 S88 Sx66 Px24 P*22 and accepted the situation on the second file. This situation is pleasant for him, and later he could drop something on 23 to break through. However I have also been succesful on the other side, and the result of the opening is an advantage for me. A few moves later the tables started to turn and his attack was very unpleasant.

In this position I needed to find a way to deal with his Pawn, while not get into any King-Rook fork. There are no really good ways to do this, so I spent most of my time here. Finally I chose for an early King escape with K31, and after Px53+, my Knight joined with N73. Like this one of the diagonals is closed and I attack his Gold. After B*64 N65 I could take his Gold, while my Knight joins the attack. With +Px43 he won quite a lot of material, but my King is relatively safe and my attack is strong. After P*42 +Px32 Kx32 G69-58 R62 B53+ we reached the following position:

Diego felt that he needed to spend some time on defense, so my Rook could survive. On 62 it is very well placed, attacking the Bishop, being protected by the Gold, and with the 6th file potentially opening up. Here I was already in byo-yomi already, and have a difficult decision to make. Maybe it is good that I didn’t see the opportunity to play G*69, because it looks very exciting! But the King can run after Kx69 N77= K78 R69+ K87. Instead I dropped a pawn on 56, so it could promote when the Bishops is exchanged to the Gold. The situation is however very tricky for my King as well. He can drop something on 23, but my King can run away to 51. After G49-48 I played +B66, a very good square for the Horse. I felt my attack should be stronger here, because the P57+ threat is very strong. We both attacked strongly and a few moves later I was in a threatmate:

It is not really possible to remove the threatemate, so I tried to mate my opponent. I started with Px58+ Rx58 G*48, exchanging the Rook, his last defender. After Rx48 +Bx48 Kx48 there are a few ways to win the Horse on 53 and escape to his threatmate, but it would not be comfortable to let him attack with many pieces with my King still in danger. So I tried to find a mate and find one after N57+. After Kx57 R*67 we again see that the Rook on 62 supports very nicely in the attack. After K56 I had to find the last important move: G*55. Now Kx55 +R65 K44 S*35 Kx34 G*24 resulted in mate by dropping my last piece!

So the Netherlands finished the league in high spirits with 19 wins out of 27 games. In fact The Netherlands is the first and only one to finish all their games in 2017! Hopefully WSL will continued with a few different regulations, possibly with The Netherlands in the highest division!

The standings at the end of 2017