I don't know if they're available in the US, but I thought Thomas Redecker's flash cards were excellent. These are roughly the same size as normal playing cards, so should fit a pocket easily.

There are 9 sets available, for different playing levels and with different themes. Each set has 4 decks of cards, with 60 cards per deck. Each card has two problems on the front (and two solution diagrams on the back).

In Germany, they cost 7 euro ($10) per deck, 24 euro ($35) for a set of four decks:

http://www.hebsacker-verlag.de/advanced ... er&x=0&y=0

How does Maeda's book compare with GGPFB vol 4, easier more difficult or about the same?

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I remember I hold a Joseki dictionary and memorize the contents, I could repeat every variations from memory and self-satisfaction for it. After I improved some years later, I know it was a detour, wasted many years. ~ igo@Indonesia

Not sure, I haven't gone through GGPfB yet. The problems are excellent for low-dan review problems, I'll say that (I still carry it around in my pocket and do one or two problems when I'm queued somewhere or something.) I found them perfect for study as a 10k moving rapidly toward shodan. The difficulties are on a rotating basis, so problem 1 is about 9k grade, problem 2 is about 7k grade... problem 10 is about 1 dan grade, then problem 11 is about 9k grade and problem 12 is about 8k grade. It rotates like that through the whole book.

That's a great idea, I'm going to do that right now!



The box of cards show in the picture above is strictly volume 1.

At approximately 900-1,000 problems per volume, and with four volumes in the series, I should get a lot of mileage out of these books.

The amount of problems I'm solving per day has increased a lot simply by having these cards on-hand. They fit in my shirt pocket.

I am very happy that the puzzles are conveniently printed about playing-card sized. Thanks for sparking this idea HH.