Improbable Tower

49 tokens to build a tower. 1 wrong pull to topple it. Life's unfair like that (¬_¬ )

Improbable Tower

Grid	Code Size	Leaderboard	Cycles	Leaderboard	Date
9x9x9	49	#148	17.558	#1046	2026-02-24

Solution

if y<-3 then return 2 end
e=y%2<1
if(e and x or z)==(y%4%3<1 and 2 or-2)and abs(e and z or x)<4 then return 15 end

How it works

It’s a Jenga tower! A GREY floor at the bottom, then BROWN planks stacked in rotating layers.

Each layer is a single plank that sits on one of four sides: right (x=2), front (z=-2), left (x=-2), back (z=2), cycling as you go up. The trick is encoding this rotation purely from y.

y%2<1 tells us whether we’re on an x-plank or z-plank layer. That boolean e swaps which axis is the fixed position and which is the free span.

For the sign (which side the plank sits on), y%4%3<1 is a neat little double-mod trick. y%4 cycles 0-3, then %3 turns that into 0,1,2,0, and <1 picks out the pairs where the plank faces the positive side. The whole rotation falls out of two cheap modular checks on y.