Coherence is a new record breaking cube and the first in my collection by well-known puzzle designer, Pit Khiam Goh. This clever puzzle demands 10 moves for removal of the first piece and then another 8 moves for the second piece.

Lambada is Jeff Namkungs first 4x4x4 cube to require rotations in the solutions and as soon as you see the pieces you know there's going to be plenty of them. The solution is classed as 3.1.9. It's easy when you know how, but it could take you a long time to get there.

Quickstep is a brand new puzzle cube from a talented designer who appeared on the scene only 3 months ago but has already been breaking records with his extremely clever puzzles. Jeff was introduced to interlocking cube puzzles earlier this year by Jos Bergmans (another of my favourite designers) when he started working at Google. When I first became interested in interlocking cube puzzles back in the 1980s, Mayer's cube from Pentangle was arguably the best example of the genre and has held its title for many years. It required 7 moves to extract the first piece and then the other five pieces then lifted straight out, giving the puzzle a rank of 7.1.1.1.1. Ever since I began designing my own cubes about 8 years ago I have been aiming to improve on Derek Mayer's record with one of my own puzzles. Jeff's latest design doesn't just beat this record - it smashes it, with an astounding 11 moves for the first piece and then a further 5 for the next piece, 3 for the third, and 3 more for the fourth piece. Jeff has very kindly given me permission to sell this little beauty in the microcubology shop, so to do it justice, I have come up with a new open style which I think you will appreciate. The larger holes mean that the puzzle not only uses less plastic (which makes it cheaper to produce) but also offers interesting views of the inner workings as you solve it.

A new 4x4x4 interlocking puzzle cube designed by Jeff Namkung. This complex puzzle requires a sequence of 9 moves to get the first piece out which is a new world record for solid faced 4x4x4 interlocking cubes. This is a great puzzle that prints beautifully in this larger, 4 cm size and should be solvable by any good puzzler. It took me about 15 minutes to find the solution (without cheating and using a computer). If you like this one, you might also like to have a look at Bolero by Jeff Namkung. It has one less move for first piece removal but is significant harder.

An updated version of Tom Jolly's brilliant Twist the Night Away puzzle cube in the new, larger 4 cm format.

I have a confession to make. Even though I love all of Jos Bergmans creations, I completely overlooked this one until today. This is not one to miss - it's simply sublime. It's probably not one for beginners but puzzle enthusiasts will love it! The six pieces will clearly fit together in only one way, but how to get them there? If you're a fan of Jos's puzzles you won't be surprised to learn that the solution involves at least one rotation, so it's no use turning to your computer for the solution. Presented in the new larger 4.0 cm open format.

One of Jos Bergmans' tricky 4x4x4 cubes that starts out easy to disassemble and gets harder. Putting the five pieces back together is even more of a challenge.

The 5 cm Switch cube now presented in the more open (and cheaper) hollow format.