Brainstring R Brainteaser Puzzle ENHANCES FINE MOTOR AND SPATIAL REASONING SKILLS  Twist the ball to maneuver the strings, even a 360-degree rotation, to solve this challenging 3d puzzle DEVELOPS LOGIC  This may be one of the easiest logic puzzles to learn, but solving it is another story and its one thats fun to see play out TRY TO UNTANGLE THE KNOT IN THE MIDDLE  Its a challenge to untangle the knot in the middle and finally solve the puzzle ENDLESS COMBINATIONS AND ENDLESS FUN  Test your critical thinking skills whenever you have spare time, need to exercise your brain or want something to do while SHARPENS CRITICAL THINKING SKILLS - Brainstring mind games are great games to sharpen critical thinking skills in young and old