Brain Out Level 150
📝 Walkthrough
Overview
A safe with a numeric keypad sits beside a calendar marked 2019.08.15, and a gift box sits behind the locked door. The passcode is hidden in the birthday math: the person is turning sixteen in 2019, so the birth year and the recent date have to be combined into an eight-digit code. The code that opens the safe is 20030816.
The calendar and sixteen-birthday statement supply the date math, while the keypad and gift box represent the locked safe that holds the present.
- Difficulty: Hard
- Estimated moves: 3
Step-by-Step Solution
- Read the calendar and the birthday statement. The current date is 2019.08.15, and today marks the sixteenth birthday.
- Work out the birth year: being sixteen in 2019 means born in 2003. Combine that year with the birthday date to build the code.
- Use the gift box or any opened clue to confirm the date part of the code, assembling the digits as year, month, and day.
- Enter 20030816 on the keypad and confirm. The safe door opens and the gift appears once the code matches.
- If the safe rejects the code, re-check the birth-year subtraction and make sure the month and day digits follow the year in order.
Derive the birth year first: sixteen in 2019 means born in 2003, and the calendar date supplies the month and day for that birthday. Assemble the digits as year, then month, then day, and cross-check the gift box clue if one appears to confirm the date part. Enter 20030816 on the keypad and confirm, letting the safe door open and the gift appear. If the code fails, recheck the birth-year subtraction and the order of the month and day digits before retrying.
Build the code digit by digit from the date rather than tapping random safe combinations, and keep the year, month, and day order straight as you enter it on the keypad. If the safe refuses the entry, the most common slip is using the current 2019 date instead of the 2003 birth year, so recheck that subtraction before trying another code.
Strategy & Reasoning
The level asks you to derive a birthday date from age and current year rather than guess a keypad combination. Sixteen in 2019 implies a 2003 birth, and the nearby calendar supplies the month and day for that birthday. Joining year, month, and day into one eight-digit number produces 20030816, the code the safe expects. The gift inside is the payoff once the derived date is entered correctly. The level asks you to derive a date from age and current year rather than guess a combination. Joining the derived birth year with the birthday month and day builds the eight-digit code, and the gift inside is the payoff once that derived date is entered correctly.
Tips & Common Mistakes
- Compute the birth year from the age and the 2019 calendar date before touching the keypad.
- Build the code as year followed by month and day, not as a random four-digit guess.
- The correct safe code is 20030816; entering the current date alone will not open it.