A.Malyuta, A.Balanyuk, R.Matskyavichyus "Tainstva shashechnykh kvadratov" [303], 2015
Other thematic variants of this Zadacha, please, see below:
Thematic variant: 1. 23-29 42-48 2. 11-07 48x23 3. 29x12 [1, 45];
Thematic variant: 1. 23-29 01-07 2. 29x47 07x16 3. 18-13 16-21 4. 06-17 21x14 5. 47-20 14x25 6. 13-30 [25, 45].