Sharp pattern in Indirect 12


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Yuriy Tarannikov
#1 2009-01-09 00:26:41

Dear readers! Please write your opinion about the next variant:

It seems that after 5 this pattern is *almost* forced for both sides until 28.

After 28-e4 black has the good development 29-i5 30-j4 31-g11.

The opening i12 + 4-j8 is not proper for Soosyrv rules since black has four 5th moves with an advantage: 5-e8,f7,h10,k7. The move 5-h6 seems to be the fifth 5th move by strength. So, this variant is proper for Taraguchi rules.

This variant can appear also after another 4th move 4-h10:

After 8 we have the same position as at the previous diagram. The move 4-h10 is not proper for Soosyrv rules too since black has four moves with an advantage: 5-e8,f7,h5,j8. The move 5-h6 seems to be the fifth 5th move by strength. So, this variant is proper for Taraguchi rules.

It is possible to obtain the same position by one way more:

However, after d11+ 4-h10 black has five 5th moves with an advantage:
5-g7,f8,e9,g9,g10. So, this 5-moves position is not proper even for Taraguchi rules. Nevertheless, it is proper for Sakata rules.

Dear readers! It can appear that I made a mistake and in this variant some side can obtain an advantage or even win. If you find this please write just here in comments.

ADDITION. It appears that black has more strong 11th move:

Black takes an initiative here.

Such 11th move is even more strong after 4-h10 5-i6:

The last variant is especially important since it gives advantage to black in the case of five 5th alternatives after 4-h10 in i12 and i8 openings. So, 4-h10 in i8 and i12 is improper even with the Taraguchi rules.

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