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The Magic Cafe Forum Index » » Shuffled not Stirred » » Thumbprint Circle for one-way deck (0 Likes) Printer Friendly Version

glowball
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My unique idea (to my knowledge this is unique but as always probably 100 years ago somebody else wrote it up) is to have a phony thumb print circle area at the bottom on the face of each card.

Example: use Leo Boudreau's six card and "close eyes if red card" trick using the Bicycle League back deck because they are a super good "one way" back cards that nobody will notice yet easy for the magician to see at a distance. But with this deck you do not phish for the red cards. You simply read the pattern produced by the six cards.

Use your stack of choice and orient the League backs' as binary "1" appropriate to a 52 card deBruijn unique 6 pattern and then turn the whole deck face up and using a black sharpie pen draw a small circle on the bottom middle face side of each card.

The above of course is a one-time preparation done well before the show. Warning: draw the circles on your stack only after orienting the backs per the deBruijn sequence.

Explain to the spectators to hold the card with their thumb on the circle because it will transmit the thoughts of the person holding the card to the magician and to hold the card a few inches in front of their forehead and of course the back of the card towards the magician.

This allows the use of a one-way deck and mistake proofs the problem of a spectator inadvertently reorienting their one way card.

For a 52-bit deBruijn sequence see the thread below:

https://themagiccafe.com/forums/viewtopi......forum=99

Any of the above deBruijn sequences will work but I would go to the bottom of the above thread and choose one of those to use with my stack.
glowball
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In fact as part of the presentation at the beginning after some false shuffles you could do a rotary twist on the whole deck on a table and then straighten the deck and of course the one way orientation is a mess but the cards are still in order. Then the deck is cut a few times by a spectator and deals six cards (one to each of six spectators). The six spectators themselves will correct the orientation of their individual cards (so the magician can read the one way backs) without realizing that's what they're doing!

This Thumbprint Circle idea could be used in other "one way" tricks that use patterns of cards.
glowball
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Nashville TN
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Instead of using bicycle League back cards the magician could use regular bicycle rider back cards and dull the head of the rider on one side of each card. Then arrange the deck per your favorite stack. Then orient the backs for a 52 sequence deBruijn. Then draw the little circle on the bottom of each card.
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