iterate 82
  replace :=
    searchUpTo_step this (by norm_num1; rfl) (by norm_num1; rfl) rfl
      (by norm_num <;> decide)
n : ℕ
this : SearchUpTo 9 99
⊢ ProblemPredicate n → SolutionPredicate n
n : ℕ
this : SearchUpTo 91 1001
⊢ ProblemPredicate n → SolutionPredicate n