Variable Vault – Level 1 – Hard

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Home » Variable Vault – Level 1 – Hard

Four lettered dials (A, B, C, D) unlock a vault. Each dial must be set to the correct number based on the clues below. Solve all clues to find the code: the 4-digit number ABCD.

Crack the vault code using these clues:

– C + B + A + D = 22
C – 2 = D – 2
A – B = D
A = 2(C – 2)
C = (B + D + 4) ÷ 2
A is an even number greater than 4.

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Additional instructions for Variable Vault (Level 1, Hard)

Variable Vault – Hard

Sign errors are the main danger. Hard puzzles often include negatives, subtraction across brackets, or multiple variable terms.

Expand brackets slowly.
Check every sign when collecting terms.
Substitute back to confirm solutions.

If a result looks strange: re-check the last bracket expansion.

Full help: Variable Vault

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