he great 18 pencils puzzle
2018 Design Ton Delsing
(put together) ****
18 pieces 40x20 mm

box 75x75 mm


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Red Yellow Red
2009 Design Ton Delsing
(disentanglement) **
wood 36x76 mm
string, beads



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21 Hexagons puzzle
2010 Design Ton Delsing
(put together, arithmetical) *****
acryl 145x165 mm
21 transparent pieces
34x40 mm
49 problems to solve on backside
Extremely difficult
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