Historical route lab

Poople #637 GRUB Answer

Poople #637 started at GRUB on May 13, 2027. Its narrow opening changes letters in the sequence U>A, G>C, B>P, A>O, C>P, R>O, with 1 par-preserving first moves.

Archive value: this is not a copied daily page. Its tables are calculated for GRUB, including 1 legal openings and route signature 3-1-4-3-1-2.
Calculated from the current word graph

GRUB route profile

Par6 moves7 words including start and target
Shortest routes4Exact routes in the current accepted graph
Legal first moves11 keep par
Route shapenarrow openingLetter positions 3-1-4-3-1-2
Spoiler controls

Choose how much to reveal

The hint describes the move without naming the word. The full route stays closed until you ask for it.

Reveal a direction, not a word

The current row reads G-R-U-B. Change position 3 and keep positions 1, 2, 4 fixed. Look for a vowel-to-vowel change. Only one first move preserves the shortest length.

Reveal the complete 6-move answer

GRUB -> GRAB -> CRAB -> CRAP -> CROP -> PROP -> POOP

Step 0GRUBStart
Step 1GRABBridge
Step 2CRABBridge
Step 3CRAPBridge
Step 4CROPBridge
Step 5PROPBridge
Step 6POOPTarget
Route anatomy

What changes at every step

  1. Step 1GRUB -> GRAB

    Tile 3 changes U to A; the move is sideways by letter shape. GRAB has 7 legal neighbors, 3 shortest continuations, and 5 moves remaining. GRUB has no additional off-route exit in the sampled branch set.

  2. Step 2GRAB -> CRAB

    Tile 1 changes G to C; the move is sideways by letter shape. CRAB has 8 legal neighbors, 1 shortest continuation, and 4 moves remaining. Other legal exits from GRAB include GRAD, GRAM, GRAY, GRAN.

  3. Step 3CRAB -> CRAP

    Tile 4 changes B to P; the move is closer by letter shape. CRAP has 10 legal neighbors, 1 shortest continuation, and 3 moves remaining. Other legal exits from CRAB include CRAM, CRAY, CRAG, CRAW.

  4. Step 4CRAP -> CROP

    Tile 3 changes A to O; the move is closer by letter shape. CROP has 8 legal neighbors, 2 shortest continuations, and 2 moves remaining. Other legal exits from CRAP include CHAP, CLAP, WRAP, TRAP.

  5. Step 5CROP -> PROP

    Tile 1 changes C to P; the move is closer by letter shape. PROP has 11 legal neighbors, 1 shortest continuation, and 1 move remaining. Other legal exits from CROP include COOP, DROP, CHOP, CLOP.

  6. Step 6PROP -> POOP

    Tile 2 changes R to O; the move is closer by letter shape. POOP has 11 legal neighbors, target reached, and 0 moves remaining. Other legal exits from PROP include PLOP, DROP, PREP, PROS.

Opening decision

Which first moves preserve par?

GRUB has 1 legal one-letter neighbors, but only GRAB keeps the route at 6 moves. Nearby detours begin outside the sampled opening set.

Compare 1 calculated first moves
MoveChanged tileTotalVerdictShortest continuations
GRAB3: U -> A6Keeps par4

GRUB opening fingerprint

GRUB groups its legal first moves as tile 3: GRAB. Two moves from the start, 5 off-route words are reachable; the nearest sampled frontier is GRAD, GRAM, DRAB, GRAN, GRAY.

Your route

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Graph reading

CRAB is the narrowest displayed bridge

After GRAB becomes CRAB, only 1 move preserves the shortest remaining distance. At the prior row, alternatives such as GRAD, GRAM, GRAY, GRAN show what the route declined.

Direct-shape gains
4
Sideways steps
2
Temporary shape detours
0
Steps touching a vowel
3

How these figures were calculated

Poople recomputes adjacency and distance from the accepted 2,398-word graph. "Shortest routes" counts every path that lowers the remaining distance by one at each move; it is not a guess based on page text or player scores.

The displayed answer is one shortest route selected from that graph. Community scores and notes are kept separate because they describe player activity, not the mathematical route.

Data mode: live Graph synced: 2026-08-25 18:28 UTC Puzzle date: May 13, 2027