Compare 4-ring ladder and spinout puzzle
http://www.youtube.com/watch?v=omdj06HIbxY
5 min 06 sec
Conestoga Playmate(十字掛圓)
http://www.youtube.com/watch?v=xd-tL32AWYo&
1 min 31 sec
Solving ring-puzzles of basic level
http://www.youtube.com/watch?v=C0c0x9E0x7U
4 min 31 sec
3-ring ladder string puzzle solving(三圈梯環解繩)
http://www.youtube.com/watch?v=-i0nFYZxjNg&
1 min 04 sec
Guitar like Metal Ring and Wire Puzzle (2 levels comparison)
http://www.youtube.com/watch?v=51vEUDuRJPM
1min 22 sec
Ttile: 3 to 4 interlocking ring puzzle Demostrations[One of my sons']
http://www.youtube.com/watch?v=FZZo52MiSKM&
1 min 47 sec
Ttile: The Imperial Scale Puzzle (String and ring puzzle)
http://www.youtube.com/watch?v=B90Oim0-dHY&
9 min 02 sec
Double 5-linked ring puzzle solving
http://www.youtube.com/watch?v=g_uEyjliQ3g&
3 min 41 sec
創新巧環設計----套環出劍嵌入連環出劍系統
http://www.youtube.com/watch?v=uPd7nl4vcuM&feature=channel_page
9 min 26 sec
雙球解繩取圈(配中文註解)
http://www.youtube.com/watch?v=DA96VzpS-24
3 min 35 sec
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