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An ingenious pattern of buttons and strings can be moved over a transparent cube and if you're not careful, a number of complex knots will start to develop. The objective of this mind game is simple: switch the outside button colours, but here's the twist, do not entangle the strings. Also see the Brainstring Advanced and the Brainstring 'R'.

  • Shipping Weight: 0.188kgs
  • Manufactured by: RecentToys

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This product was added to our catalog on Wednesday 27 May, 2009.