Grooved 6 Board Burr #4 – Junichi Yananose

Yay! I’m back with another board burr – This time, it’s number 4 of the 6 burr series. Thank God it’s not number 3!

An excellent Board Burr Puzzle!

This is another beautiful puzzle that utilizes Hickory and Rose Alder with pins of Bamboo. The two wood varieties achieve a nice contrast and while not exotic looking, this puzzle has a subtle beauty that is very pleasing.

This puzzle was a joy to play with. The moves are fun and satisfying. It was a bit tricky at first, although the start is very limited, the puzzle soon hits a dead end and it’s a bit difficult to figure out.

The key with this puzzle, in my opinion, is to really try to accomplish specific moves and positions. With the previous 3 board burr puzzles, I would mostly just explore every possibility with no other intention in mind. It felt impossible to actually try to solve the puzzle. Instead I was left wandering around, moving back and forth until something new opened up. With #4, I was able to determine which piece needed to come out first and was then able to strategically figure out moves to make that happen. This made it more rewarding to solve. There were even a couple of a-ha moments that really stood out.

There is one pin and groove in particular that was hidden the entire puzzle. This made things challenging, yet fun. I kept wondering why the heck certain pieces wouldn’t move as expected – turns out they were held in place by this hidden pin and groove.

I found myself a bit stuck toward the end of this puzzle – I had in fact solved it, and all I had to do was slide the piece free, but I kept searching for more. When I finally slid the piece off, I felt silly for not trying it sooner. After removing the first piece, there is still a challenge left to remove the remaining pieces.

Some interesting channels, notches and two types of pins make for some fun moves.

To me, this is a classic board burr puzzle. It’s approachable and would likely take a novice a long time to solve, but the solution isn’t terribly difficult – just keep at it and you’ll get there. Where #3 had endless pathways, dead ends and was difficult to keep track of, #4 was far more straightforward. There were some hidden moves, and a few tricks to unlock a certain piece, but overall this was a great puzzle that has given me motivation to continue with the series.

Bring on #5!

Final thought – This series is criminally underrated. There are only a few reviews online and further, a couple example have sold on the Cubicdissection marketplace for ~$60-$80 each. Perhaps board burrs are not that desirable to collectors, but these 6 Burrs stand at the top of my collection. I’ve gotten dozens of hours of very challenging puzzling out of them and they are large, heavy and well-made. What’s not to love?

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