Another record breaker from Jeff - a 4x4x4 cube with a 27 step solution. Quite extraordinary!
This 5 piece 4x4x4 cube has just one external hole but the level of difficulty more than compensates for this.
14 separate steps to remove the first piece!
Another 8 moves before the second piece comes out.
2 more moves for the third, and 3 for the fourth completes the disassembly.
The pieces will fit into the cube's outline in two different ways but only one of these can be assembled - so if you end up stuck in a dead end, think again.