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 25-02-2021 Valdas Bieliauskas:

A.Malyuta, A.Balanyuk, R.Matskyavichyus "Tainstva shashechnykh kvadratov" [304], 2015

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

Thematic variant: 1. 36-27 02-07 2. 34x01 25x45 3. 01-12 15-20 4. 19-14 20x16 5. 08-21 [16, 45].