A quarter of this cake has been cut away showing three identical layers inside. This puzzle looks simple but it is very ingenious. Designed by American designer Bram Cohen.
Ages: 8 +
$35.99 $21.59
$18.99 $11.39
$6.00 $3.60
$34.00 $20.40
$29.99 $17.99
$18.99 $11.39
$9.99 $5.99
