The ShengShou (SengSo) 15×15 is a well-known high-layer cube that helped push the “big cube” scene forward. It’s non-magnetic, typically stickerless, and listings commonly quote roughly 115.5–120 mm size and about 906–912 g weight. It’s often sold in a flashy display-style case.

Who it’s for

• Experienced solvers who already know reduction and enjoy long solves.
• Collectors who want a statement-piece 15×15.
• If you want magnetic assistance or quick training sessions, this isn’t the format.

Turning / control feel

• With no magnets, layer alignment is entirely down to technique and careful handling.
• Large puzzles reward steady pressure and good lubrication habits.

Magnets & mechanism

• No magnets.
• Solved like an NxN (typically via reduction), just with many more layers.

Size, weight, materials

• Size: about 115.5–120 mm.
• Weight: about 906–912 g.
• Finish: stickerless.

Main pros

• A true “ultimate challenge” in classic cube form.
• Relatively manageable for a 15×15, following the compact big-cube trend.
• Looks incredible in any collection.

Potential cons

• No magnets: can feel freer and needs more manual alignment.
• Very long solves; not suited to short sessions.

How to use

• Scramble and solve via reduction to 3×3, keeping centers/edges organized.
• Solve on a table and take breaks; long sessions can be tiring.

Packaging & contents

Commonly sold in a display case; exact contents may vary by batch/seller.