Soosõrv-N opening rule

Soosõrv-N opening rule is a renju opening rule. It is an advancement of Soosõrv opening rule.

Rule details

The sequence of moves implied by the rule follows.

• The first player puts one of the 26 openings.
• The other player has the right to swap.
• The white player puts the 4th move anywhere on board and declares the number of fifth moves offered in the game. This number has to be not less than 1 and not greater than N declared in the rule name. Default N for Soosõrv opening rule is 4.
• The other player has a right to swap.
• The black player puts as many 5th moves on the board as it was declared before. The fifth moves can not be symmetrical.
• The white player chooses one 5th from these offerings and plays the 6th move.

Brief description

Depending on the value of N this rule gives an average to big variety of new playable variants in a growing number of openings. Soosõrv-5 is very close to Taraguchi concerning a number of playable positions. Soosõrv-8 makes all 26 renju openings available.

Tournaments played by this rule

This rule was certified by Renju International Federation in 2011 after a proposal from Russian Renju Association. No significant international tournaments was played by this rule as of March 2012.

External links

• http://renju.net/media/showrule.php?rule=10 Renju International Federation: description of Soosõrv rule.
• http://renju.net/organizations/ga2011.php Renju International Federation: GA-2011 protocol