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 20-02-2021 Valdas Bieliauskas:

Correction of position from 20-02-1991

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

 Thematic variant:

1. 30-24 20x26 2. 27-21 26x17 3. 12x39 03x12 4. 11-07 12x01 5. 39-11 01-07 6. 02-24 07x16 7. 05-28 16-21 8. 32-27 21x23 9. 24-29 23x45 10. 06-50 [45].