12 pieces with inlaid letters. Pieces with tongue and groove. All pieces 20x20 mmSlide from the starting position ALBWHITE CK!!ET TO !WHITE !BLACK! On the back there is a slide up and down. This slide changes the free hole.Then slide to BLACK! WHITE!  easy?Material Acrylic. 

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.  The numbers are engraved in the pieces. Material acrylic.If you carefully open the puzzle (press the bottom of the title square piece) you will see a 4. Remember that.

Copy of this puzzle made by puzzle design Ton Delsing in 2011

IN CARDBOARD BOX (NEW)

NEW

A RUBIK 3X3

    IN ORIGINAL BOX (NEW)

IN BOX (NEW)

NEW

WITH BOX (NEW)

(NEW)

NEW

WITH BOX (NEW)

WITH BOX (NEW)

Puzzle with box. Material puzzle plastic.

 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 towerMaterial MDF.The pieces are covered with transparent foil. You can slide without damage.

    Place the pieces in the frame, Place the black piece with the holes on it. You should now see the 0 and 9. (start position). There are several ways to do this, There is only 1 good  to slide to the numbers 1 to 4. Then slide to the numbers 5 to 8, Then slide the 1 at the top left and the 8 at the bottom right, Place the black piece on it so that you only see the 1 and 8. (end position) .The numbers are engraved in the piecesMaterial acrylic.

Put the letters in the right order. Assignments on the back. Pieces cannot fall out due to transparent top plate.Material acrylic.The letters are engraves in the pieces.

Exchange GROEN with BLAUW, The & piece is immovable Material acrylic.The letters are covered with transparent foil. You can slide without damage.