Year-Game Challenge

Use each of the year's 4 digits exactly once, with standard math operations, to build every number from 1 to 100. Allowed: + − × ÷ ( ) ^ and decimals (e.g., .2), concatenation (e.g., 26), unary minus, factorial !, double factorial !!, and √. The classic family-break challenge.

Target: 1

Pick any number 1–100, then enter an expression that evaluates to it.
Rules in detail
  • Use every digit of the year exactly once. Order doesn't matter.
  • Concatenation counts: 26 uses one '2' and one '6'.
  • Decimals count: .2 uses one '2'. .02 uses one '0' and one '2'.
  • Operations allowed: + − × ÷, parentheses, exponent ^, factorial ! (e.g., 3!=6), double factorial !! (e.g., 5!! = 5×3×1 = 15), square root sqrt(.).
  • Concatenations like 0!=1 are great tricks.

Progress: 0 / 100

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Examples (year 2026)
12 − 0 − 2 + 6 / 6 = 1
1(2+0)/2 + 6 − 6 = 1
22 + 0 × 2 × 6 = 2
42 + 0! + 2 + 6 − 0 − 6 ... must use exactly the 4 digits
82^(0!+2) + 6 − 6 = 8 (uses 2, 0, 2, 6 each once)
102 + 0 + 2 + 6 … wait that's 10! Yes ✓