Third line
See Invasion of third line three space extension
Fourth line
See
Mixed
PathsInvasionItinerary
Referenced byThreeSpaceExtensionMiddlegameJosekiInvasionsOnTheSideTaxonomyOfJosekiJosekiPagesLowInvasionOfMixe...SystematicJoseki/...44PointLowApproac...BQM451posting:5614
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