Josekibase is the a program that allows you to step through every recorded line of an opening. Because the complete games are also in the GoGoD database, you can track how lines developed over time, and see how each joseki works in practice - even down to the nitty gritty of the endgame moves.

At present (October 2001) only the Avalanche joseki (nadare) has been fully compiled, but this offers a staggering 892 games. Magic Sword and Taisha compilations are also under way.

Nadare screen shot

Want to see more features? Try the Screensaver.

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Copyright John Fairbairn, with permission