Yuriy Golikov: variatsiya na khorosho izvestnuyu temu.
Sayt “MiF”, tema “Shashechnyye golovolomki”, [570], 04-03-2019
Other thematic variants of this Zadacha, please, see below:
Thematic variant: 1. 24-20 15x24 2. 13x35x49x21~ 02x13 3. 04x40 16x27 4. 36x22 25-30 5. 40-35 30-34 6. 35-40 34x45 7. 22-50 [45].