That was roughly the same puzzle, but without the 2 cylinder obstacles. The task of this puzzle: remove the ring in the center. I sold 40 of them. 3 collectors sent me the solution.
Copy produced by puzzle design Ton Delsing.F. D. The world famous Initials. Frank Delano Roosevelt's Initials.Registered U.S. Patent Office.The F consisted of 5 red pieces, the D of 6 blue pieces.Material. Thin Plastic.
Everyone knows the problem of 8 queens on a chessboard, In the puzzle is a booklet with all the assignments. But I also came up with my own assignments. Material plastic.1. Make lines with 2 DOTS. Horizontal, vertical or diagonal. I found 32 lines 2. Do this also for 3 DOTS. 13 lines found. 3. Do this also for 4 DOTS. 8 lines found.