100 LOGI Black & White Japanese Puzzles: Easy to Hard by Urszula Marciniak (Engl
29,43 €
By Urszula Marciniak, Joanna Diez, Andrzej Baran. The person who takes care of Logi's high quality is Urszula Marciniak - the founder of Logi. Puzzles are tested by a computer program designed by Urszula Marciniak, a mathematician and puzzle lover.
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