NO + NOT + THAT = AGAIN
What is this puzzle?
Solve the addition alphametic puzzle where NO + NOT + THAT = AGAIN. Each letter represents a unique digit from 0-9. No number starts with zero.
Difficulty: medium · Category: addition · Unique letters: 7
This medium-level addition alphametic puzzle features 7 unique letters (A, G, H, I, N, O, T). In the equation NO + NOT + THAT = AGAIN, each letter maps to a distinct digit from 0 to 9. With only 7 of 10 digits used, 3 digits remain unused in the solution. The leading letters N and T and A cannot represent zero — this is your first constraint. This puzzle has 3 addends (NO + NOT + THAT), making carry analysis more complex. Start from the rightmost column and work left, tracking carries between columns.
- This addition alphametic has 7 unique letters to determine.
- Leading letters: N, T, A. None of these can be zero.
- There are 7 unique letters, so 3 digits from 0–9 will not be used.
- Start from the rightmost column (units place) and work left, tracking carries between columns.
- With three addends, each column can produce a carry of at most 2.
- A moderate number of letters means you'll need logical deduction alongside trial and error.
Play this puzzle
NO
NOT
+
THAT
AGAIN
A=
G=
H=
I=
N=
O=
T=