Builder: Mission has started .

Architect: hello

Architect: this one is kind of like a rainbow using three colors

Architect: it stands up ,

Architect: and all blocks lie within the same plane

Builder: ready

Architect: on two edges ,

Architect: along the same row ,

Architect: place a red block at each end

Builder: place red 5 1 -1, place red -5 1 -1

Architect: now put a purple block to the right of the left red block ,

Architect: leaving a one block gap

Builder: place purple 3 1 -1, place purple 3 2 -1, pick purple 3 1 -1

Architect: wait sorry ,

Architect: that purple should be on the ground

Builder: i thought you said it stands up

Architect: yeah ,

Architect: it will

Architect: patience !

Builder: place purple 3 1 -1, pick purple 3 2 -1

Architect: do the same thing on the right side

Architect: but going inwards

Builder: place purple -3 1 -1

Architect: okay ,

Architect: now using the same technique ,

Architect: place yellow blocks relative to those purple blocks

Builder: place yellow 1 1 -1, place yellow -1 1 -1

Architect: cool

Architect: now think of these as the bases of three separate arches

Architect: in those colors

Builder: i see

Architect: let's start simple with yellow

Architect: put a yellow block on the next layer up and between those on the ground

Builder: place yellow 0 1 -1, place yellow 0 2 -1, pick yellow 0 2 -1, place yellow 0 2 -1, pick yellow 0 1 -1

Architect: that finishes the yellow arch

Architect: now for purple

Architect: on the left purple block ,

Architect: put one purple block diagonally up and right of it

Builder: place purple 3 2 -1, place purple 2 2 -1, pick purple 3 2 -1

Architect: this whole shape is symmetric ,

Architect: so you can do the same for the other side

Builder: place purple -2 1 -1, place purple -2 2 -1, pick purple -2 1 -1

Architect: up and right one more time

Builder: place purple 2 3 -1, place purple 1 3 -1, pick purple 2 3 -1, place purple -1 2 -1, place purple -1 3 -1, pick purple -1 2 -1

Architect: now connect those two top purple blocks in the middle ,

Architect: on the same level

Builder: place purple 0 3 -1

Architect: we 'll do a similar pattern for the red blocks ,

Architect: except now there will be four blocks going up diagonally instead of three

Builder: connected at the top in the same layer ?

Builder: place red 4 1 -1, place red 4 2 -1, pick red 4 1 -1, place red 3 2 -1, place red 3 3 -1, pick red 3 2 -1, place red 2 3 -1, place red 2 4 -1, pick red 2 3 -1

Architect: yes ,

Architect: you 'll end up with a row of 5 connected at the top

Builder: place red -4 1 -1, place red -4 2 -1, pick red -4 1 -1, place red -3 2 -1, place red -3 3 -1, pick red -3 2 -1, place red -2 3 -1, place red -2 4 -1, pick red -2 3 -1, place red -1 4 -1, place red 0 4 -1, place red 1 4 -1

Builder: done

Architect: cool !

Architect: that's our rainbow

Architect: sort of

Builder: its not right ?

Architect: no

Architect: it's right ,

Architect: it's just not really a rainbow :

Architect: P

Builder: oh gotcha