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EDC Square by Mark T

Created by: Mark T

EDC Square is a compact, reusable set of crib cards designed for performing the classic magic square trick. Each card contains six pre-calculated formulas for the magic square, allowing magicians to produce different-looking squares every time without memorization. The cards are laminated for durability and can be wiped clean for reuse or given away as souvenirs. This is a close-up or parlour trick that combines mathematical intrigue with visual appeal, making it ideal for walk-around performances or table-to-table magic. Buyers should note that while the trick is self-working, a basic understanding of the magic square principle enhances performance.

Key features

  • Reusable laminated crib cards with six magic square formulas

  • Compact size (folds to business card dimensions for EDC)

  • No memory work required—formulas are pre-calculated

  • Suitable for close-up or parlour settings

  • Includes tutorial for multiple presentation options

Pros

  • Highly practical for impromptu performances

  • Versatile—can adapt to different audience sizes

  • Durable and reusable materials

  • Affordable price point for the utility

Cons

  • Limited to magic square enthusiasts

  • Requires some practice for smooth presentation

Effect

The EDC Square is a compact, portable version of the classic magic square trick. To the audience, it appears as if the magician quickly fills in a grid of numbers based on a spectator's chosen number. When the spectator adds up any row, column, or diagonal, the total always matches their selected number—seemingly through impossible mathematical precision. The magician can even hand the completed square to the spectator as a souvenir.

Full Details

The EDC Square consists of a set of laminated business-sized cards, each pre-printed with cribbed formulas for six different magic squares. The magician selects the appropriate formula based on the spectator's number, writes the necessary digits, and reveals the square. The cards are reusable—either wiped clean with alcohol or given away—and fold in half for easy carrying in a wallet.

The trick requires minimal memory work, as the formulas are visible on the cards. The magician can also use a dry-erase marker to pre-fill most numbers, leaving only a few to complete during performance for a faster reveal.

Who Should Consider the Trick

  • Mathematical Magic Enthusiasts – Ideal for those who enjoy number-based tricks but want a streamlined method.
  • EDC (Every Day Carry) Performers – Perfect for magicians who want a compact, always-ready trick in their wallet.
  • Walkaround or Close-Up Workers – Works well in casual settings where quick, interactive magic is needed.
  • Beginners – No advanced math skills required; the cribbed formulas do the work.

Difficulty

  • Low to Moderate – The method is straightforward, but smooth presentation (e.g., pretending to write all numbers live) elevates the effect.
  • Angle-Friendly – No sleight of hand; the only challenge is hiding pre-filled numbers if using the dry-erase shortcut.

What Magicians Say

  • Mark (SaturnMagicShop) calls it a "Dark Horse of Blackpool," praising its practicality and reusable design. He notes that even magicians familiar with the magic square can benefit from the six additional cribbed formulas.
  • Reviewers highlight its versatility—different squares prevent repetition for multiple spectators, and the laminated cards hold up to repeated use.
  • Performance Tip: Use a peak (e.g., from a wallet) to learn the spectator's number secretly for a more impressive reveal.

The EDC Square is a modern take on a classic, blending mathematical intrigue with everyday practicality.

What people are saying about EDC Square

SaturnMagicShop says...

EDC Square flew out at Blackpool when people saw them—these crib cards offer six different formulas, so you can produce a unique magic square every time. [...] The price point means even if you already know the method, the reusable cards alone justify the purchase.

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