At IPP 28 2008 in Prague the participants received a cardboard drawing of this puzzle. I enjoyed making a few, this is the last one I have. An additional slide holder with the history of the tower
This puzzle is a copy produced by puzzle design Ton Delsing. Slid the numbers into order. Start: remove orange center piece & piece number ten. Green pieces are immovable.Material MDF.
The most difficult puzzle I have designed. The puzzle consists of 15 pieces. Some pieces can be slid under the edge. Goal: Make the numbers 1 to 9 from left to right in the frame There are different possibilities. But there is only one possibility to slide to a magic square. If you carefully open the puzzle (press the bottom of the title square piece) you will see a 4. Remember that.
This puzzle is a copy produced by puzzle design Ton DelsingYears ago I received a drawing of this puzzle from Edward Hordern. I couldn't find it anywhere and decided to copy it. 9 + 1 extra piece ( number 2). Material acrylic.The stripes on the puzzle indicate the slots at the bottom. Horizontal, vertical or a cross. All 4 corners in the tray have a pin. A nice and difficult puzzle.