On the Subject of Forget Me Not
When a toddler constantly seeks attention, we can end up throwing a tantrum too.
- Record the bottom display’s digit at each stage.
- The stage starts at 1 (shown on the smaller display), and increments when solving a non-ignored module.
- For each stage, use the corresponding table below to determine its modifier, and add that with its digit (modulo 10) to get a sum.
- After the last stage, begin at stage 1, and press the button equal to the sum you calculated for each stage.
- Pressing the wrong button for a given stage will light the button with the stage’s original digit in green.
| Stage 1 Modifier |
| unlit CAR | 2 |
| #unlit > #lit | 7 |
| #unlit = 0 | #lit |
| L# in S# |
| Stage 2 Modifier |
| SER | ≥3# in S# | 3 |
| p. sum even | p. sum + 1 |
| p. sum - 1 |
| Stage 3+ Modifier |
| either p. sums = 0 | M# in S# |
| both p. sums even | SO# in S# |
| MSD of sum of p. sums |
| Key |
| # | number, number of, digit |
| L# in S# | the last digit of the serial number. |
| M# in S# | the largest value digit in the serial number. |
| SO# in S# | the smallest odd digit in the serial number, or 9 if all digits are even. |
| ≥3# in S# | The serial number has 3 or more digits. |
| SER | A serial port exists on the bomb. |
| p. sum | The previous stage’s sum (modifier + digit) |
| p. sums | The two previous stages’ sums (modifier + digit) |
| MSD of sum of p.sums | Add the two previous stages’ sums (not modifiers or digits) together. If ≥10, the MSD is 1 instead. |
Examples:
S# 5A3UL2, lit CAR, SER
| Stages | 1 | 2 | 3 | 4 | 5 | 6 |
| Digits | 9 | 5 | 2 | 1 | 5 | 8 |
| Modifiers | 1 | 3 | 5 | 1 | 9 | 3 |
| Sums | 0 | 8 | 7 | 2 | 4 | 1 |
S# 2JYMD4, no indicators
| Stages | 1 | 2 | 3 | 4 | 5 | 6 |
| Digits | 9 | 4 | 7 | 1 | 7 | 1 |
| Modifiers | 0 | 8 | 1 | 9 | 4 | 4 |
| Sums | 9 | 2 | 8 | 0 | 1 | 5 |