Внимание!С 2025 года в каждом из разделов можно будет публиковать не более трёх композиций ежемесячно от одного автора.
#8
11+5
Keywords: pure round trip (B), model mate, changed continuation, switchback (BNk), pendulum (k), annihilation, sacrifice of white piece (passive), line opening
This problem was first published here on 2022-11-03, accidentally deleted by the system and reentered on 2022-11-08.
