Explicit Nothingness
Carve out a quadrant of emptiness, let the rainbow fill the rest! ᕙ(⇀‸↼‶)ᕗ
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#1 on the code size leaderboard!
| Grid | Code Size | Leaderboard | Cycles | Leaderboard | Date |
|---|---|---|---|---|---|
| 7x7x7 | 10 | 🏆 #1 | 5.673 | #8615 | 2026-02-23 |
Solution
return x|z<0 and y+7How it works
x|z (bitwise OR) is negative whenever at least one of x, z is negative, because the sign bit propagates through OR. So x|z<0 is a compact way to check “are we outside the x>=0, z>=0 quadrant?”
When true, we return y+7 which maps each y-level to a different color:
| y | y+7 | Color |
|---|---|---|
| -3 | 4 | PEACH |
| -2 | 5 | PINK |
| -1 | 6 | PURPLE |
| 0 | 7 | RED |
| 1 | 8 | ORANGE |
| 2 | 9 | YELLOW |
| 3 | 10 | LIGHTGREEN |
When both x and z are non-negative, the and short-circuits to false which means empty. Bitwise ops doing the heavy lifting again ✧