On the Subject of Piano Keys

What do you get when you drop a piano down a mine shaft? A flat minor.

See Appendix A for indicator identification reference.
See Appendix B for battery identification reference.
See Appendix C for port identification reference.
See the next page for piano/keyboard reference.

  • A piano keys module will present with 3 musical symbols in the top indicator and a 12-note keyboard to input with.
  • Each rule consists of one or more required symbol(s) and optional further requirements based on the bomb casing.
  • Follow the list of rules down until one matches the criteria for the module; then execute the sequence of notes listed.
  • A failed attempt will require re-entry of the entire note sequence.
Required Symbol(s) Further Requirements Note Sequence
b Last digit of serial number is even Bb Bb Bb Bb Gb Ab Bb Ab Bb
c or # 2 or more battery holders Eb Eb D D Eb Eb D Eb Eb D D Eb
n and U (No other requirements) E F# F# F# F# E E E
C or T RCA port is present Bb A Bb F Eb Bb A Bb F Eb
B SND indicator is present and lit E E E C E G G
m or U or c 3 or more batteries C# D E F C# D E F Bb A
b and # (No other requirements) G G C G G C G C
C or m Serial number contains a 3, 7 or 8 A E F G F E D D F A
n or T or B (No other requirements) G G G Eb Bb G Eb Bb G
(No requirement) (No other requirements) B D A G A B D A

Piano/Keyboard Reference

Use the following graphic as a reference to how tones are mapped onto a standard 12-note piano/keyboard.