Masced white Dentist combined with Umnov-theme + Bivalve, double unpin of white N and B, ambush moves of LEg1 which forces control over 2nd horizontal and determines Bivalve-theme in play of black Pawns. Anti-dual moves by LEg1, critical moves by unpined white N and B. An interesting play demonstrates white S/Q battery - after moves of forward piece Sb8 and the black King we have double line-opening for the white Queen! A good, active position of the w.Queen in the initial setting! (Authors)
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