Tag Archives: IPP

Check Me Out

This entry is part 3 of 6 in the series IPP 31

Quite some time ago now, I mentioned in the post about the Post IPP California Puzzle Party that I’d purchased a copy of Dave Rosetti’s exchange puzzle from IPP31 and that I’d write a review soon. It seems that soon wasn’t very soon at all and it’s taken me months to get round to writing it! But here at last is the review of ‘Check Me Out’ designed by Stewart Coffin, and numbered 256 in his numbering system.

STC #256 - Check me out

STC #256 - Check me out

Check Me Out is another devious tray packing puzzle from Mr Coffin, where a mere four pieces have to be packed into the tray. To make things interesting, the tray isn’t square, it’s a nice parallelogram, and one piece is conveniently not placed in the tray. If that wasn’t hard enough, the card which comes with the puzzle kindly states


With puzzle art such fun to play
Chuck the four “checkers” in the tray
So that shape and color both will be
In perfect two-fold symmetry

Front of the info card

Front of the info card

Back of the info card

Back of the info card


The Puzzle itself is fairly plain. There’s no exotic woods used here (possibly Maple for the lighter wood), and the base of the tray is made from a veneered 3 ply plywood. That said, the grain in the veneer of the base of the tray is nice enough and gives a good contrasting colour to the pieces. Add to that the fact that the grain is offset to the angle of the walls of the tray really helps to mess with your head as you’re solving it. The bottom of the tray is marked in pencil “256 STC 2011”.

Bottom of the tray

Bottom of the tray

Each of the four pieces is very accurately cut and has had the corners rounded very slightly to take the sharp edges away. It’s a small detail, but as a fellow puzzle maker pointed out to me when I started making puzzles, it really does make the puzzle far nicer in the hands when you’re solving it.

Solving this one really took quite a while for me. I spent several hours trying to find a combination where all four pieces could fit in, ignoring the symmetry part of the problem. This is an excellent puzzle that will likely keep you busy for a long time. Who would have known that four pieces could provide such a problem to placing them in a tray?

I’m not going to post the solution here, as that would spoil the fun. If you’re really stuck, then drop me a note and I might help you out by letting you know where one or two of the pieces go!

Birthday Puzzling

As some of you know, I celebrated my birthday last week, and the day came with some shiny new puzzles and tools thanks to my family.

Some Zebra Wood to make puzzles, and a few new tools

Some Zebra Wood to make puzzles, and a few new tools

It seems that my fiancée had been hard at work, talking to a few of my friends and figuring out what and how to get me a few puzzles and tools. Not only was I lucky enough to receive three puzzles from Mr Puzzle, but there were also some tools to help in making more puzzles myself, and three board feet of Zebra Wood to make into puzzles as well.

I have been talking about getting a small random orbit sander for quite a while now. Believe it or not, up to this point, all the sanding that Ive done, regardless of the size of the project has all been done by hand. So to get a nice palm sander plus several different grits of paper was really nice. I have a couple of biggish projects that I’m working on just now, including the charity build of two children’s rocking horses, so that will come in really handy there, as well as finishing the outer surfaces on some of the puzzles I’ve been making.

Also among the tools was a nice hand plane. It’s another tool that I didn’t own and will make a nice addition to my tools. I have a very small plane for fine work, but this will help for some of the bigger projects that I have planned. Finally there’s an interesting corner clamp. I have no doubt this will come in very handy for making boxes for some of the puzzles.

Three puzzles from Mr Puzzle

Three puzzles from Mr Puzzle

From the puzzle side, I had mentioned to my fiancée that I really wanted to have a proper go at Mr. Puzzle’s IPP exchange puzzle from IPP 31 this year, the Houdini’s Torture Cell. Well it seems that when she went looking for it, she decided it wasn’t very expensive, and had a look around some of the other puzzles on the site to pick up a few puzzles for me. In the end she decided on the Cable Car from the San Francisco IPP, and One Four All & All Four One from IPP30 designed by Arcady Dyskin & Pantazis Houlis.

I’ll be writing full reviews of all the puzzles once I’ve had a chance to play with them all so keep an eye out for them soon.

Buffalo Nickel

The Buffalo Nickel is based on a puzzle design by Oskar van Deventer and was made by George Miller for IPP 20 in Los Angeles is a large burr style puzzle where the object is to fit the two burr pieces into the main body of the coin to complete the border of the coin. It takes 9.5 moves to put the three pieces together into the solved state. I’m not quite sure where the half move comes from, but I’ll take George’s word for it (more on that later).

The front of the Buffalo Nickel

The front of the Buffalo Nickel

The back of the Buffalo Nickel

The back of the Buffalo Nickel

This puzzle was brought to me by a friend after they visited my house recently and I showed them a few of the puzzles in my puzzle cabinets. Her daughter who was with her mentioned that they had this big coin puzzle where you had to put the two pieces into the coin and it was really hard. She had spotted it in a garage sale, and bought it as she thought it looked pretty neat. Unfortunately, she hadn’t been able to solve it, and nor had her mum so it was sitting in its three pieces. Before I could say much my fiancée announces that I’ll solve it for them if they bring it to me. Well, not much I can really say at this point other than, “Sure, I’ll give it a go”. After all how can you disappoint an 11-year-old when she’s been drooling over the puzzles in the cabinets.

The puzzle promptly appears over the weekend and an excited 11-year-old hands me the puzzle and says there you go.

The three pieces of the Buffalo Nickel

The three pieces of the Buffalo Nickel

As you can see the two pieces are simple burr pieces which both interact with each other inside the puzzle and with ledges and holes inside the body of the coin. It’s a big puzzle, measuring around 4″ diameter, and being metal has a good weight to it.

I should point out that when I was handed this puzzle, I was at my Son’s football game (American Football, not Soccer for all those back home in the UK), where I was in charge of the grill. I had just sat down to eat some lunch, so had a burger in my hand when I was given the puzzle. With an excited 11-year-old in front of me I thanked her, and said I’d try once I finished eating.

So finishing my burger, I take a look inside the body to see how much I can see, and look at how the two pieces interact. It seemed fairly straight forward, so I insert both pieces, and play around with how they interact inside the puzzle. I’m able to get the right hand piece in place fairly quickly, but it’s blocking the left hand piece from falling into the correct spot. Taking the pieces out, I play around with just the left hand piece to see how it fits, and it becomes pretty clear that it has to be very carefully aligned to drop into place. The tab on the left has to fit very precisely into the body, and any small angle in the piece prevents it from being inserted.

With that knowledge, I put both pieces back into the puzzle, and have it solved a minute or so after that. All in all it took less than five minutes for me to solve.

Getting up from my seat, I take the solved puzzle to my friend and I’m greeted with “What, What, how, you ….”. I just laughed and said that it was a very nice puzzle, did she mind if I took a few photos to allow me to put up a review of it.

Given that this was an IPP puzzle, the card which accompanied the puzzle for IPP 20, has the following information about the puzzle. The copy that my friend has doesn’t have the card with the puzzle, or its original box.

The Buffalo Nickel Puzzle is based on the Nine-and-a-half-Moves puzzle by M. Oskar van Deventer. It is composed of just three pieces that fit together in such a way to hide a secret compartment. Although the three pieces are flat and lie in a single plane, it takes a remarkable 9 1/2 moves to solve.

There is a very interesting article from Oskar about the puzzle, that does contain the solution (you’ve been warned) which you can read here if you’re interested. I know I mentioned at the top that I didn’t know where the half move came from, however in Oskar’s article, he describes the slide and rotate which is required in the solution as a move and a half. So that explains where the half came from!

I’m very happy to have been given this puzzle to try, and it was a fun little puzzle to play with. Thanks to my friend to lending it to me. Now she has to go solve it herself as she knows it’s possible now!

Post IPP California Puzzle Party

I know I’ve been a little slow in putting this together, but for those of you waiting for it, here’s my little round up of the Post IPP California Puzzle Party.

As with the last CPP, Stan Isaacs kindly opened his home to the motley crew of puzzle enthusiasts from around the Bay area and had a huge array of puzzles out and about for us to play with. Amongst those out were a complete collection of IPP31 exchange puzzles as well as my previous nemesis from the first CPP, Roger’s ‘Alles Roger’ puzzle.

Despite my complete inability to remember names, there were a good few faces I recognised, either from the last meeting, or people who were pointed out to me. If I’ve forgotten you, it’s not personal! In attendance were Nick Baxter, who sent me the info on the first CPP I went to. He couldn’t make it to the first party so it was good to be able to meet him this time, and talk about some of the exchange puzzles, some of the IPP design entries and a few other items in my collection.

Superstrings by Richard Gain

Superstrings by Richard Gain

Derek Bosch had also taken a few hours away from his daughter to pop in and say hello. He’d brought his copy of STC’s Distorted Cube made by Tom Lensch. I played around with this puzzle for a little while, and given how good a puzzle it is, when Tom listed some on Puzzle Paradise, I jumped at the chance. Derek was working on Richard Gain’s Superstrings puzzle which was one of the Jury First Prize winners at IPP31. You can read Brian’s review here. This is a really tough puzzle, and I can see why it won favor with the judges at IPP. Much easier to take apart than it is to put together, Richard can be rightly proud of this one.

Perplexus Epic

Perplexus Epic

Fellow blogger Jeff Chiou was also there, having brought along the Perplexus Epic, since we’d talked about that at the last CPP. As it happens, I’ve bought myself a copy since the last CPP (yes, review coming along with the Perplexus Rookie!) so I didn’t play with it. When I arrived, Jeff was working on Alles Roger, having not opened it last time. I did spend some more time on this RD puzzle and this time I got the small ball bearing out of the puzzle. So, yes it is possible, no random shaking will not solve it, and the solution isn’t quite what I was expecting!

Not sure who it was, but someone was playing with Bram Cohen’s Cast Rattle at one point. Stan walked past and commented that he couldn’t open it just in his hands but someone around could. Someone (I told you I was bad with names) mentioned that I could open it and Derek mentioned that Bram was at the gathering, so I was promptly introduced to him. Great to meet yet another designer, and Bram seems like such a nice guy.

Harry Nelson who I’d met the last time was also sitting in Stan’s little study, and seemed to delight in handing my fiancée puzzles to see if she could solve them, much to my amusement. Jen’s not really a puzzler, although she is always interested in the exotic woods that the puzzles I own come in.

At this point, you’re probably wondering if I spent all my time talking or if I tried any of the puzzles. After all, why else do you go to a puzzle gathering? I did have a good rifle through the boxes of IPP exchange puzzles on Stan’s desk, as well as a few people handed me to play with.

Rik's Egg Balance

Rik's Egg Balance

One of the first puzzles I tried to solve was Rik’s Egg Balance by Rik van Grol. This is the second year that Rik has used a laser cut egg, created from multiple layers glued together with a ball bearing inside the egg. The layers form a maze which the ball must be navigated through to get the ball bearing into the thin end of the egg, at which point it will balance on it’s ‘nose. Stan saw me playing with this years entry, and promptly handed me last year’s entry as well, commenting that the wasn’t sure which was worse! I have to agree with Stan. Both are really tricky, and even with the slot in this years entry which allows you to see the ball bearing, and some of the maze, it’s still no easier!

Check me Out

Check me Out

Despite Stewart Coffin having ‘retired’ from making puzzles, he’d made quite a few to be used as exchange puzzles. This on called ‘Check Me Out’ is STC #256 as was Dave Rosetti’s exchange puzzle this year. Dave was there and when he saw me playing with it asked if I’d like a copy. Both Derek and I sad yes in response, so I’ll write a full review of this one soon, since I have a copy of my own. Short version, it’s another devious Coffin packing puzzle. I also had a play with Stewart Coffin’s ‘Quintet in F’, #253 in his numbering. It’s similar to ‘Check Me Out’, with a non square tray, but the pieces are all the same. Every bit as maddening if I’m honest. I believe the trays in both puzzles are identical, and the unit sizes are the same, so I may have a go at making the ‘F’ pieces myself. If anyone can confirm whether the trays and pieces are the same, that would be great!

George Bell's Dice Box (image from Scott Elliot)

George Bell's Dice Box (image from Scott Elliot)

I picked up George Bell’s Dice Box made by Scott Elliot on his 3D printer using live hinges. Since it was already assembled, and I’d read on Scott’s Blog, that taking it apart was tricky, I didn’t want to go breaking it. I would like to have a shot at this one from its flat packed state, as it’s a good solid puzzle, and the design, using co-ordinate motion makes it looks like it would be fun to play with. (Scott, George – do you have any left 😉 )

While I was playing Derek and (I think Nick Baxter) were puzzling over Z-Shift. A Number of red and blue pieces of acrylic which have been glued back to back in some interesting pieces. There were a number of challenges to create heart shapes, and other such puzzles using the pieces. This seemed a little similar to ‘Black or White” by Tomas Lindén and Vesa Timonen. I don’t have a picture of this one. Sorry.

Four in a Frame by Markus Gotz.  Image borrowed from Rob's puzzle Page

Four in a Frame by Markus Gotz. Image borrowed from Rob's puzzle Page

Four in a Frame designed by Markus Götz, is yet another tray packing problem that I tried out. This time four very unsual pieces, with a strange shaped cut out in the tray. The tray was double sided, with an ‘easy’ and a ‘hard’ side. I didn’t solve either in the time I played with the puzzle, but then tray packing puzzles aren’t my strong point. I borrowed this picture from Rob’s Puzzle Page so have a look there for more information and other pictures.

A few other puzzles I played with were Crazy Bottles by Jean Claude Constantin. The idea here is that it is a mechanical version of the “Three Jugs Problem”. If I’m honest I didn’t care much for this puzzle. The levers which were used to control the movement of the ball bearings were sticking and hard to move, and I was concerned I was going to break it. I know there were a lot of people very excited by this puzzle at IPP, and perhaps if I had the puzzle problem sheet and some time I may have liked it more. As it was I certainly didn’t want to damage one of Stan’s puzzles.

Triple Play Closed

Triple Play Closed

Triple Play opened

Triple Play opened

Triple Play other side

Triple Play other side

At one point I was handed a copy of “Triple Play” designed by Bill Scheckels and used as an exchange puzzle by Norton Star (I think). This is a beautifully made puzzle and is very tactile. There’s no sharp edges anywhere, and it really does want you to pick it up. A fairly simple puzzle, using a hidden locking mechanism and co-ordinate motion to slide the pieces apart. I really liked the look and feel of this puzzle, even if it was fairly simple to open. There’s something mesmerizing about the way the pieces move, and the use of light and dark woods.

That’s it for this CPP. I had to leave reasonably early this time, otherwise I’m sure I’d have spent a lot more time at this gathering. As ever it was a good meeting, and I look forward to the next one!