Peter's non-flipping tri-cairos was the exchange puzzle of Peter Knoppers at IPP25 in Finland, 2005.The puzzle consists of 10 pieces and a frame. The goasl is to fit all pieces in the frame, while to mono-cairo pieces are placed at predefined positions. Various challenges are given (see picture 5 6)The puzzle comes in original custom paper sleeve (picture 3) , which has a few wrinkles.The challenges are included, the solutions are not.The original challenge 5 is impossible, it should read field ...

Vesa Burr 8 was the exchange puzzle of Matti Linkola at IPP25 in Finland, 2005.The goal of this puzzle is to find the level 13 assembly that shows "IPP" and "25" on the outside when solved.The 8 plate burr can also be assembled in many other ways, including the way it is shipped, which is not the solution.The puzzle comes in original zip lock bag with original instruction sheet.= = = = = over 70 IPP25 exchange puzzles available, see my other listings = = = = =

El’s and Arrows was the exchange puzzle of Ad van der Schagt at IPP25 in Finland, 2005.The tray has 2 sides , providing several diferent packing challenges, also described on the instruction sheet (see picture 2).1: Insert all the 8 pieces at the front side (square)2: Insert all the 8 pieces at the back side3: Find solutions to fill the front side (square) with less than 8 pieces in such a way that no more pieces can be added.4: Find solutions to fill the back side with less than 8 pieces in ...

Caged Knot was the exchange puzzle of Bernhard Schweitzer at IPP25 in Finland, 2005.The goal of this puzzle is to remove (and then replace) the three ash pieces from inside the Massaranduba “cage”.It takes 13 moves to remove the first piece.As indicated on the packaging, some pieces have a (bit of a) tight fit depending on humidity.I verified the solve at 45% humidity, and found 2 or 3 moves of the solution to be very (not 'a bit') tight, but doable. (see picture 4)The puzzle comes in its ...

Octaplex was the exchange puzzle of Bob Hearn at IPP35 in Canada, 2015.The goal of this puzzle is to assemble an octaplex.The octaplex is described inside the lid of the box, see picture 2.Don't worry, solving this puzzle is not as difficult as understading the description.It's a lovely fidget puzzle, keep trying and you will solve it one day.All 5 pieces are shown in picture 3.The puzzle comes in its original cardboard box with instruction labels.

Twins was the exchange puzzle of Rikishi Yamada at IPP30 in Japan, 2010.The goal of this puzzle is to make 2 identical (same black/white pattern) 4x4 squares, using all 10 wooden pieces.19 example challenges are given, for 6 of these the life size challenge cards are included (not shown in the pictures)The puzzle comes in its original zip lock bag, with original instructions and challenge cards.

Koichi Miura's new puzzle 5L Basket (crafted by MINE (Mineyuki Uyematsu)The goal is to put the 5 L-Shaped pieces inside the basket.Wonderful puzzle with a great AHA moment!Shipping can be combined if you are winning more than one of my auctions. The shipping costs will be calculated after the auction. The buyer has to pay the shipping costs.Please contact me if you have any questions about the item

Award winning 4L Basket by Koichi Miura. One of my favorite packing puzzlesFrom the PuzzleMad blog (https://www.puzzlemad.co.uk):"I knew that 4L Basket was going to be fun - it had won the Puzzler's award as well as the Jury 1st prize at the Design competition in 2019 and I had a brief play with Allard's copy at the last MPP and failed to solve it after a ½ hour helping me decide that I definitely needed my own copy. I tried a few of the tricks from the 4L packing puzzle but that didn't help ...

Diskos was Jeremiah Farrell's exchange puzzle at IPP25 in Finland, 2005.The goal of this 2D put-together puzzle is to arrange the 12 DISKOS pieces on the 6x6 grid so that the four occurrences of each number (1-6) mark the four comers of a square. The six squares may be of size 4x4, 3x3 or 2x2.An example is shown in the 6th picture.The exchange puzzle includes a wooden 6x6 grid version with numbers on the pieces, and a pressboard 4x4 grid version with letters on the pieces.Also an additional 'd...

Black Magic was the exchange puzzle of Roman Götter at IPP25 in Finland, 2005.This 25 piece jigsaw puzzle has 2 very different solutions.Some of the double-sided pieces have parts of images of dice engraven on them.(Ignore the reflections in the pictures, the top right piece in picture 2 clearly shows the dice engraving)Solution B shows a dieSolution A shows the faces 1-4This puzzle is packed in a CD jewel case, which can also be used to store one of the solved states.= = = = = over 70 IPP25 ex...

Six Easy Pieces was the exchange puzzle of Rosemary Howbrigg at IPP25 in Finland, 2005.The goal of this puzzle is to arrange the six wooden pieces to form a solid, regular polygon.It is up to the solver to find out how many sides the regular polygon has, although a hint is provided on the instruction sheet.This puzzle is packed in a red fabric bag.= = = = = over 70 IPP25 exchange puzzles available, see my other listings = = = = =

Valise Squeeze was the exchange puzzle of Stan Isaacs at IPP25 in Finland, 2005.The goal of this puzzle is to pack the pieces into the valise.Then repack the pieces, to squeeze in an extra yellow square.Then repack again, to squeeze in a second square,and a final time to squeeze in all three squares.Once you have solved the puzzle, try to figure out where all the extra area is coming from.The answer is shown and explained on an additional paper sheet.This puzzle is packed in a custom-made plasti...

The Danish Squares was the exchange puzzle of Frank Karrenbeld at IPP25 in Finland, 2005.The goal of this puzzle is to use all 20 pieces to make either 1, 2, 3, 4, 5, or 6 squares.See detailed instruction in the 2nd picture.The puzzle comes in original custom made paper sleeve, with instructions and solutions inside.The outer paper sleeve is torn and wrinkled in some places, this does not affect the puzzle at all.= = = = = over 70 IPP25 exchange puzzles available, see my other listings = = = = =

Towers of Riga was Andrejs Cibulis' exchange puzzle at IPP25 in Finland, 2005.The goal of this 3D packing puzzle is to  pack the 13 pieces in the hexagonal box.See 3rd picture for the original detailed description.= = = = = over 70 IPP25 exchange puzzles available, see my other listings = = = = =

Complete Insanity was the exchange puzzle of Rik van Grol at IPP25 in Finland, 2005.The goal of this puzzle is to place the 5 cubes in the base in such a way that from all (six) directions you see 5 different symbols.The base (tray) has 2 layers, a top layer with holes that fit the cubes, and a bottom layer with smaller holes to make the symbols on the bottom of the cubes easily visible.The symbols are laser-engraved on the cubes, the instructions are laser-engraved on the base.This puzzle com...

Karin's Cubes & Ladders was the exchange puzzle of Jürg von Känel at IPP25 in Finland, 2005.The goal of this puzzle is to select 16 of the 30 pieces and arrange them so that there is a continuous path from the lower left to the top right. See also the laser engraved instruction on the back of the puzzle (picture 2)The puzzle comes with a 54 page booklet describinig the puzzle history, analysis, and 24 challenges and solutionsThis puzzle is packed in a zip lock bag together with the booklet.= =...

Stuff the Turkey was the exchange puzzle of Harry Nelson at IPP25 in Finland, 2005.The goal of this puzzle is to re-assemble the 8 tetromino pieces in the frame, after "shaking them out of the box".The pieces are a bit loose on purpose, to make sure they drop out of the frame when the box is turned over.This ensures that the solver does not see the solution before attempting the solve.A second challenge is to put the empty frame in the box, and then re-assemble the pieces in the frame.This compl...

Alcatras was the exchange puzzle of Vaclav Obsivac at IPP25 in Finland, 2005.The goal of this puzzle is to take it apart and put it back together again.This is a four-piece coordinated motion puzzle.The wood is unfinished, this causes friction between the pieces.Therefore the coordinated motion solution requires accurate alignment.Three different wood types are used, the wood types are not specified.The puzzle comes in its original cardboard box, with with instruction sheet.= = = = = over 70 IPP...

Dissection 634 was Koshi Arai's  exchange puzzle at IPP25 in FInland, 2005.This 2D packing puzzle has 3 goals: pack all pieces in either the hexagon, the triangle, or the square area in the frame. A very nice geometrical dissection puzzle, lasercut from wood.The tray is rather large at 12 x 30 cm.= = = = = over 70 IPP25 exchange puzzles available, see my other listings = = = = =

 Double Take Checkerboard was Les Barton's  exchange puzzle at IPP25 in Finland, 2005.This 2D packing puzzle is two puzzles in one, see the 2nd picture for the full description.This puzzle comes in its original box.= = = = = over 70 IPP25 exchange puzzles available, see my other listings = = = = =