Players should put several chessmen at the right place according to the clues they got.Then, the lock will be released.
List: One controller, Several magnet sensors, One piece of chess, One 12v power supply
![](http://cdn.shopify.com/s/files/1/0230/5366/4336/files/01_96c7bf0a-a4c1-4731-adb6-f2b4bdea6461.jpg?v=1562293160)
![](http://cdn.shopify.com/s/files/1/0230/5366/4336/files/02_ba508956-071a-412c-925f-646872da92ea.jpg?v=1562293165)
![](http://cdn.shopify.com/s/files/1/0230/5366/4336/files/03_20dd6260-8dde-4abb-b2a8-0b738fccbff5.jpg?v=1562293171)
![](http://cdn.shopify.com/s/files/1/0230/5366/4336/files/04_19a400fc-4c41-4919-8df9-2c1f39fcecfa.jpg?v=1562293181)
![](http://cdn.shopify.com/s/files/1/0230/5366/4336/files/05_f7812aa2-a274-4397-85cf-0e60df68f671.jpg?v=1562293190)
Players should put several chessmen at the right place according to the clues they got.Then, the lock will be released.