:: Igo Hatsuyôron 120 (2026)

The Non-Main-Semeai Solutions

After the Completion of the Hanezeki

Starting Point = White F2

White F2 as Move #36 (4 Jigo)

The Haneziki's Tail has its minimum length of two stones.

Instead of following Black with for an early Guzumi-Exchange, White plays the Hane in the lower left corner.

White F2 as Move #46 (1 Jigo)

Here, Black has already completed the sequence for reducing White's upper right corner.

The Haneziki's Tail has reached a length of four stones.

Instead of following Black with for an early Guzumi-Exchange, White plays the Hane in the lower left corner.



The Jûrokubango has come to an end.

Over the course of the Jûrokubango (bold section), Black's Initial Self-Play Success Ratio (the blue line in the diagram) stabilised in the range between 65% and 60%.

We are looking at a viable solution here, which is easier to play for Black than for White !

28b's surplus of won games in the Jûrokubango (the red line in the diagram) has reached 0 (showing an upward trend).

28b has therefore mastered this variation just as well as 40b.



Please click the board for SGF-download ...
(28b = Black)

Please click the board for SGF-download ...
(28b = White)

The comments indicate the number of games in which the respective variation was selected.
E.g. "A=19 // B=264" == Variation "A" was played in 19 games, variation "B" in 264 games.
(The labelling is designed for SGF-editors that label next moves with capitals "A", "B", "C", ...)

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