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 26-02-2021 Valdas Bieliauskas:

12-yy Vsesoyuznyy konkurs [20], 1970

Other thematic variants of this Zadacha, please, see below:

Thematic variant: 1. 32-28 35-40 2. 11-07 01x21 3. 22-17 21x12 4. 02-08 12x03 5. 14-09 03x05 6. 28-10 05x14 7. 24-20 14x25 8. 06-44 [25, 40].