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The Ultimate Safecracking Quiz
by Staff
You often see slick safecracking in the movies, but is it really as easy as it seems? There are several methods, but the starting point with all of them is knowing what safe you are trying to crack and how it works. Take a crack at this quiz and learn more about this fascinating subject.

The three ingredients of successful safecracking are: the right tools, the right skills and:

  • ingenuity
  • lots of patience
  • a clear head

What is the basis of successful safecracking?

  • the fact that every safe has to be accessible to a locksmith in the event of malfunction
  • knowing how the safe is made
  • having the right people teach you the ropes

What do fire safes do?

  • contain fires so that they won't spread
  • protect against fire as well as against unwanted entry
  • protect against fire but not necessarily against unwanted entry

What characterizes a Group 1 combination lock?

  • a sturdy lock commonly used in most home safes
  • a sturdy lock with a combination of up to three numbers
  • a sturdy lock with a combination of up to six numbers

What do wheel fly, fence, drive cam and spindle have in common?

  • They are all parts of a wheel pack.
  • They are all methods of safecracking.
  • They are all components of a fire safe.

In a wheel pack, what happens when you turn the combination dial?

  • The wheel notch turns the drive pin.
  • The spindle turns the drive cam.
  • The fence turns the wheel fly.

For how long has the wheel pack been used in safes?

  • about 100 years
  • about 500 years
  • no one knows for certain

All safes come from the manufacturer with try-out combinations. What are these?

  • combinations that have been tried out by the manufacturer and proven safe
  • combinations that you try out in order to see if you're happy with the product
  • industry standards for certain initial combinations

People who buy safes and use the try-out combinations without resetting the combination:

  • make it easy for safecrackers
  • make it difficult for safecrackers
  • prevent safecracking altogether

How will searching the room help a safecracker to crack the safe?

  • He may find an escape route through which he can escape while lugging the safe with him.
  • He may find clues to what he's looking for.
  • He may find the written combination somewhere nearby.

Why is it easy to break into a day lock?

  • because it is only locked during the day, so one can break in at night
  • because it is largely unlocked anyway and may only require guessing one digit
  • because people are out during the day

According to Harry C. Miller, lock manipulation has three steps: 1)determine contact points, 2)_____ and 3)graph your results.

  • find the safe's weak point
  • listen for the slightest sound
  • discover the number of wheels

What will you see when you graph the results of your lock manipulation?

  • You'll see the exact combination lock numbers.
  • You'll see highs and lows, representing likely combination lock numbers.
  • You'll see the right and left contact points converge, pointing to a range of numbers that hold the combination.

How many variations will a three-number combination have?

  • three
  • six
  • nine

If you want to drill through a safe, where on the safe should you do it?

  • through the side
  • through the top
  • through the face of the lock

If cobalt plates have been installed inside, what drill bits would you require to penetrate them?

  • titanium or diamond
  • steel or titanium
  • diamond or steel

When drilling above the cobalt plate, the safecracker can use a fiber-optic viewer to watch the wheels spin as he turns the dial. What is this viewer called?

  • magniscope
  • fiberscope
  • borescope

Torching is one effective method to crack a safe. What temperature can an oxy-acetylene torch reach?

  • 4,500 degrees Fahrenheit (2,482 degrees Celsius)
  • 5,500 degrees Fahrenheit (3,037 degrees Celsius)
  • 6,500 degrees Fahrenheit (3,593 degrees Celsius)

Using a plasma cutter or thermic lance can create enough heat to drill through a large safe, but it generates a lot of heat and smoke. What other downsides are there?

  • They’re not readily available on the market and they work intermittently.
  • They're both expensive and require skill to operate properly.
  • They are dangerous to the user and produce a toxic byproduct.

When using explosives to crack a safe, the most popular option is nitroglycerine "grease." What does the substance look like?

  • a runny liquid
  • car grease
  • jelly