Level 84 · Changsha Spicy Crayfish

Changsha Spicy Crayfish is level 84 of Crumb Colony. The pixel picture has 568 blocks in 10 colors, the tray holds 34 ant boxes, and the difficulty is Advanced.

Difficulty

Advanced

Pacing

Hard middle

Blocks

568

Colors

10

Ant boxes

34

Mechanics

3 chained pair(s) · 2 golden key(s) · Mystery boxes · 4 noodle(s)

Play level 84

About the dish

Changsha spicy crayfish, a summer night-market favourite: bright red crayfish stir-fried with chili and spices, long antennae and all.

How the picture comes apart

From the frame to the center the picture is 12 layers deep. The outer ring is mostly black and grey, the middle band is mostly white and red, and the core is mostly white and yellow. Ants can only reach the next layer once the one around it is gone, so the core colors are the last to become useful.

By block count the biggest colors are white, black and grey.

The 2 golden key(s) are buried in the middle band of the picture, so the locks they open come into play around the middle of the level.

4 noodle(s) run through the picture, 38 cells in all. They can only be slurped from their ends, so they act as walls until an end is free and as tunnels after that.

Reading the tray

The tray starts with 34 boxes in 4 columns. At the start 4 of the 4 front boxes can bite right away: black (bites now), navy (bites now), navy (bites now) and black (bites now).

Chained pairs start in column 2–3, row 5, column 2–3, row 6 and column 3–4, row 4.

Locked boxes start in column 1, row 4 and column 1, row 7.

1 mystery box(es) only show their color when they reach the front.

How the verified run plays out

The solution further down was played to the end in the real game, with ants walking and real timing. It takes 31 taps. The chart shows how many boxes were still parked in the 5 slots, waiting for their color, just before each tap.

Opening (taps 1–9): 34% of the blocks are eaten, with up to 1 of the 5 slots holding a box that is waiting.

Middle (taps 10–19): 32% of the blocks are eaten, with up to 3 of the 5 slots holding a box that is waiting.

Ending (taps 20–31): 33% of the blocks are eaten, with up to 1 of the 5 slots holding a box that is waiting.

A key comes out before tap 5. A key comes out before tap 19. Chained pairs are taken at taps 15, 20 and 21.

How hard is it?

Two test players attempted this level many times: a cautious one that only sends colors it can use right away cleared it 29% of the time, and a look-ahead one that tries each option before committing cleared it 70% of the time. Most of their failed attempts jammed in the middle.

Strategy

Check the colors of the first three boxes in each column and compare them with the colors exposed on the outer ring of the picture. Always keep one slot free to catch a color that can't be eaten yet.

The start is easy and the pressure builds in the middle. Use the calm opening to sort out the back rows and try to have two slots free before the middle phase.

Keys are buried in the picture and must be dug out to open the locks in the tray. Prioritize colors that eat around the keys so locked boxes don't block the front row for long.

Chained boxes need both halves in the front row and two free slots. Take the boxes in front of them first and free two neighboring slots in advance.

Mystery boxes show their color only when they reach the front. When you see one coming, don't fill every slot; leave room for it.

Noodles are eaten only from an end with a white dot, never from the middle. Look for ends that are already free or about to be: slurping one opens a tunnel straight into the picture and can uncover inner colours early. A noodle with both ends buried is a wall until you dig to one of its ends.

Chained boxes · Locks and golden keys · Noodles · Difficulty curves

Step-by-step solution

This order of taps is verified to clear the level. Columns are numbered 1–4 from the left; after each tap, wait until the ants are out before the next one. Two boxes shown together are a chained pair taken in one tap.

Level 84 questions