01:56

Deposited Soma - Does this count as a Soma puzzle?

04:18

Chopped Soma - What other way could you chop up Soma pieces?

04:30

Tower of Soma - How to better represent the intended goal?

02:56

Soma di Cabrio - How does Volker Latussek come up with these puzzles?

02:53

Zigzaggu Drawers - What would be a better maze for this puzzle?

02:25

Opaque Soma - Does this make the puzzle harder or easier?

02:35

Geared Iris - How to solve a puzzle like this?

02:34

Ternary Key - How can this be a puzzle, as there are no wrong ways?

03:16

Unhinged Cube - Why does this chained loop not have a twist?

02:52

Unhinged Square - Why is this puzzle easy to solve?

02:01

OOC - What other fun puzzle can you make with flexible plastic?

02:00

Floppy Burr - How can a burr with six identical pieces still come apart?

02:29

Chained Sliders - Can one swap two adjacent squares?

03:21

Cone Four - Does a conical puzzle ring make any sense?

03:26

Dominumbers Too - Is this finally a well-working prototype?

02:31

OC Burr Too - What material should this puzzle be made of?

02:04

OC Burr - What other burrs with longitudinal overlap do you know?

02:31

Cross Fold - Who can remove the design flaw?

04:29

Serendipitous Diskovery - How do you like Mike Wood's serendipity?

02:30

Inward Ring - How can this ring be compressible?

02:30

Rainbow Iris - Does it have any practical application?

01:44

Cabrio - How to get Volker Latussek's top off? (Spoiler Alert!)

05:11

Ziggustretch - What would make a nice theme for this stretch puzzle?

03:13

Tandem Maze Too - How many traffic features are there in this maze?

02:18

Tandem Maze - How much harder because of the second ball?

01:39

Squarely Nuts - How can a square nut fit around a square screw?

04:49

Screw Cage Too - How do you like the new looks and play?

04:20

Ziggutrees - Is solving this an uphill battle?

03:42

Ziggutwist Too - Why don't those disk just come out?

02:36

Ziggutwist - How can this puzzle be made more meaningful?

03:14

Zigguhooked - How addictive is this puzzle?

04:22

Zigguchain - Is this the world's most simplistic binary puzzle?

04:17

Dominumbers - How can you count with magnetic e-ink?

03:19

Pentomiyes - Can you turn this no into a yes?

02:54

E-Ink Puzzle - How to develop more challenges for this puzzle?

01:57

Cave Man Puzzle - How to get the caveman out of his mancave?

02:19

Oskar's Two Piece Packing - What is the maximum number of moves with a 4x4x4 cube?

02:44

NEWS Gears - What is NEWSworthy about these gears?

02:03

Galactic Gears - Is the red gear exactly elliptic, or does it only look that way?

05:17

Marbler - How to turn Yosuke Ikeda's Algoloop into a puzzle?

02:30

Diskussion - What makes the little disks automatically move from one dial to the next?

01:39

Heart too Heart - Is it too cute?

03:52

PRBS Generator - What are Pseudo-Random Binary Sequences used for?

02:34

Triquadsplosion - Can you make any infinite triangle-square pattern with these tiles?

04:13

Nobbz - Would this make a good 60-challenges puzzle?

03:22

A Gearus Line - Can you make this line of gears spin in sync?

04:14

Gear Fit - How would you approach solving this puzzle?

03:15

Double Fractional Gears - How can objects have fractional rotation symmetry anyway?

03:11

Spinor Gears - How does this 720-degrees rotation symmetry relate to quantum mechanics?

01:51

Pentagram Gears - How to explain this magic gearing?

01:11

Chicken Run - What came first, the chicken or the egg?

04:54

Heron's Super Fountain - How can this gravity-driven fountain sprout higher than itself?

01:57

Oskar's Matchboxes Puzzle - Are you 3D-printing this, or glue this puzzle from regular matchboxes?

02:20

Rhombox - Can you prove that this puzzle box has a unique solution?

02:26

Oskar's Magic Box - Would this be a good box to hide treasure?

03:27

Sliding Soma - How to get the Soma pieces into THIS box?

03:06

Zigguflat - How can a burr be two-dimensional, frameless and n-ary?

03:20

Traffic Light Gears - Would you wait for the gears to turn green?

02:50

Fractional Gears - How can a gear have "half-fold" rotational symmetry?

01:59

Derailed Hearts - Can you get these gears back on track?