October 3, 2026.

setting

3 agents sit at the lounge bar in seats 1 to 3, left to right. Each has a unique codename, a unique drink, and a unique favorite game, drawn exactly from the lists below.

codenames

• brisk
• juno
• quill

drinks

• coolant
• nectar
• static

games

• logic
• oracle
• sequence

clues

1. codename brisk sits in seat 1.
2. codename juno is the static drinker.
3. the nectar drinker sits in seat 3.
4. the logic player sits in seat 2.
5. the oracle player is codename brisk.

question

Which seat (1-3) does codename juno occupy?

Instructions

Exactly one arrangement satisfies all clues. Deduce it and answer the question with a single word or number.

seating

• seat

  1

  name

  brisk

  drink

  coolant

  game

  oracle

• seat

  2

  name

  juno

  drink

  static

  game

  logic

• seat

  3

  name

  quill

  drink

  nectar

  game

  sequence

initial Registers

a

0

b

8

c

3

program

1. 1. DEC b
2. 2. DEC c
3. 3. DEC b
4. 4. SUB a b
5. 5. INC b
6. 6. DEC c
7. 7. INC c
8. 8. SUB a c
9. 9. COPY c b
10. 10. INC c

Instructions

Execute the program top to bottom, one instruction at a time. Semantics: INC x: x = x + 1. DEC x: x = x - 1. ADD x y: x = x + y. SUB x y: x = x - y. SWAP x y: exchange the values of x and y. COPY x y: x = y (y unchanged). IF <condition> THEN <op>: perform <op> only if the condition holds at that moment; with ELSE, perform the alternative instead. Registers may go negative; an even number is one divisible by 2 (so -4 is even, 0 is even). Provide the final value of register a as a plain integer.

final Registers

a

-8

b

7

c

8

Puzzle

L F5 U F1 F5 F9 F5 F7 F4 F8 F7 F8 F3

Instructions

A robot starts at position 0,0 facing north. x increases to the east, y increases to the north. Commands: F<n> move forward n cells in the current facing. L turn 90° left. R turn 90° right. U turn 180°. M teleport to the mirror point (-x,-y), facing unchanged. Report the robot's final position as x,y — two integers joined by a comma, e.g. 3,-2. Whitespace is ignored.

steps

• L → 0,0,w
• F5 → -5,0,w
• U → -5,0,e
• F1 → -4,0,e
• F5 → 1,0,e
• F9 → 10,0,e
• F5 → 15,0,e
• F7 → 22,0,e
• F4 → 26,0,e
• F8 → 34,0,e
• F7 → 41,0,e
• F8 → 49,0,e
• F3 → 52,0,e

Puzzle

(((B XOR NOT B) OR C) XOR NOT D)

Inputs

A

1

B

0

C

1

D

0

Instructions

Evaluate the circuit. Answer 1 or 0.

expression

(((B XOR NOT B) OR C) XOR NOT D)

Puzzle

3, 6, 9, 15, 24, 39, ?

Instructions

Use one of these families: next = m × previous + c with integer m=2..4 and c=1..9; term n = a*n*n + b*n + c with n starting at 1, a=1..3, b=0..5, c=0..9; or each term is the sum of its two predecessors. Provide the next integer.

examples

• input

  hhrwuyp

  output

  qzvxsii

• input

  ptnfip

  output

  qjgouq

• input

  ammts

  output

  tunnb

query

kyviz

Instructions

Infer a composition of 1 to 2 operations (repetition allowed), applied left to right. Allowed operations: reverse; rotate left one; rotate right one; duplicate the first character at the front; swap adjacent pairs (leave an odd final character); Caesar shift lowercase letters by +1 or +3 with wraparound; append the current first character. All matching compositions within this limit agree on the query answer. Apply the rule to the query.

Puzzle

qzIfqzI0

Layers

• base64
• rot13

Instructions

Layers listed innermost-first. Recover the plaintext English word.