The chaos of choice

Thousand ideas.

Shogi Books reviews?
Writing shogi book in English about endgame?
Doing more penguin videos?
Making a shogi board that is readable for shogi players and easily buyable in Europe?
Writing blog posts with game analysis like before?

Too many ideas paralyses the choice.
Similar in shogi game where there are too many moves on the board and you end up choosing the wrong one under time pressure.

Today I played a game on 81dojo and tried to analyze it on playshogi.com and lishogi.org to compare how both websites AI’s will judge the moves.

Both computers showed the same drops in the evaluation (orange), but some smaller spikes were more or less forgiving (green).

The centipawn and mistake count showed like this:

Also not being far off from each other. Playshogi was harsher to categorize imprecision as mistakes for Black, at the same time finding more imprecisions for White.

Checking in more detail, what position they found as imprecision… Sometimes they agreed, sometimes not.

To study my own kifu, instead of concentrating on every detail, it is easier to concentrate on those bigger jumps in the graph (orange). If there is many of them, concentrate on the ones with biggest centipawn loss. In this case there was this huge mistake on the right side, dropping from 2000 points.

The move I played was to jump the knight, with the idea of “putting more pressure”. That would lead to my horse being blocked off by …S*44.

That move reviewed on playshogi.com first showed equal game, then showed Black being 500-1000 points better. Little confusing when trying to find the best variation. Lishogi.org was between 0.1-2.4 for Black. (As comparison the big spike of 2000 points = 26.9). The longer the AI thought, the more evaluation changed. A quite confusing study tool.

But one thing is clear perhaps, …S*44 was a good answer for White, so instead of jumping the knight, taking gold was more decisive. Sx62+ Gx, B*81 Kx, +Bx62 will lead to hisshi. After B*81 K61 with G*53 (lishogi) leads to many complex variation, but we are able to promote our second bishop while eyeing the 27 dragon. The king is more unsafe in the middle of the board. …K61 L*64! [Px is mate] (playshogi) is a move that lishogi also preferred, if let it analyze it. L*64 N*71 leads again to G*53 (+18.2 or 4843 for Black).

With this experiment I can say that no matter which website you use, they both seem to use reliable computer. At lishogi you have ability to change how many lines or how much memory the computer can use, and on playshogi you can force computer to reconsider move for next 5 seconds.

Personally I am more used the centipawn showed by playshogi, the chess originated +18.2 tells me nothing. Showing multiple moves options on lishogi is also interesting, but hard to see which move is the best (Yes, the size of the arrows is supposed to show it, but there are also drops with regular size or different piece on the same square…? Hard to see).

It is clear though that I made a horrible mistake by jumping the knight. A bad, but unpunished choice it was.

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