Grid drill
Nov 2026 · Interactive map · Didn't ship
What if every place on Earth had a short code you could zoom into, one cell at a time? I built it in a day, then tested it with an AI agent over 600 runs.
Click a cell, or type the one you see (b then 3) to go one level deeper. Arrows move to a neighbor, Backspace goes up.
From the world to the Obelisco in six clicks
-
01 C2.B2 · 2,062 km
-
02 C2.B2.C2 · 515 km
-
03 …C2.C3 · 129 km
-
04 …C3.B2 · 32 km
-
05 …B2.A4 · 8 km
-
06 …A4.A3.B4 · 503 m
29 m
typical miss, AI alone
319 m
typical miss, AI with the grid
600
agent runs
74 → 29 m
after fixing one number
Median miss over 50 random pins, three runs each. Measured on November 6, 2026.
Idea
A zip code for the whole world.
goncy shared a prototype where letters split the map into a grid. It didn't work for people, because places next to each other got very different codes. I wondered if the same grid could help an AI agent point at a spot on a map.
Build
A grid tied to the world, not the screen.
Each level splits a cell into 16. Places that are close share the start of their code, and at any level you can step to a neighbor instead of starting over. Drag, click or use the arrow keys.
Test
Find a red pin with nothing to search for.
I dropped a red pin at a random spot near 50 cities. The agent drove a real browser and had to report where the pin was. Half the runs used the mouse wheel. The other half could jump into grid cells. Each pin ran three times.
Result
The plain browser won.
With the grid, the agent took a few big jumps and stopped at city level. With the mouse wheel, it kept zooming in small steps and landed within 29 m. In an earlier, simpler test the grid had won, which is a good reason to test against the real thing.
Lesson
Better instructions beat a new tool.
The biggest gain came from one wrong number in the agent's instructions. Once they said how much one scroll really zooms, the typical miss went from 74 m to 29 m.
Watch it run
The demo above, driven with real clicks from the world to the Obelisco and back. No sound.