Extreme mazes
30 mazes that begin where the hard page gives up: the extreme tier, the impossible tier, and US Letter boards drawn for that paper. Each card prints the exact measured numbers of its own board, so you know what you are up against before you spend the ink.
30 printable sheets ·
Checked and published by 
Nora Quill
Extreme mazes, 44 by 58
Twelve boards of 2,552 squares, 67 percent more than an expert sheet, printed at 4.09mm a square. The dead end count runs around 250 per board and the correct route is measured and printed on every card. Carved with long corridors rather than heavy branching, which is what makes a wrong turn cost real distance before it closes on you.
Impossible mazes, 52 by 69, the largest boards on the site
Twelve boards of 3,588 squares at 3.46mm a square: the densest grid that still prints cleanly on one A4 page at full size. Around 350 dead ends per board. This is the sheet people are describing when they search for the hardest maze in the world, and it still has exactly one route, proved by the same check every maze here passes. Print at 100 percent, use a pencil, and give it a quiet half hour.
US Letter extreme boards, nothing rescaled
Six boards proportioned to the US Letter page from the start, 46 by 58, so they are their own mazes and not the A4 ones reprinted at 94 percent. If your printer takes Letter paper, set the scale to actual size and there is nothing else to change.
What counts as extreme here
This site already prints a hard maze at 26 by 34 squares and an expert one at 34 by 45. The boards on this page start past that: the extreme tier is 44 by 58, which is 2,552 squares, and the impossible tier is 52 by 69, which is 3,588. That last grid is the densest this site can print on a single A4 page at full size without the corridors closing up, and the walls are drawn thinner on purpose to match the smaller squares.
Every card under every maze states the exact route length and the exact dead end count measured off that specific board, not a difficulty word. An impossible board carries around 350 dead ends. The name is a promise about your afternoon, not about the maze: there is still exactly one route, and it is proved by the same automatic check every maze on this site passes before it is published.
How to actually solve one
Use a pencil, not a pen; you will be backing out of wrong corridors many times. Most people do better working a section at a time rather than tracing from the entrance: blocked pockets become obvious when you look at a region as a whole. Shading the dead ends you have already ruled out keeps them from eating your time twice. And print at 100 percent or actual size, never fit to page, because a shrunk 3.46mm corridor stops being usable with anything thicker than a sharp pencil.
If these are too much, or not enough
The honest step down from here is the hard mazes page, which runs from the ordinary 26 by 34 boards through difficult, very hard and advanced rungs, and also keeps a small extreme section of its own. The step sideways is the mazes for adults page, which trades size for density with several boards on one sheet. There is no step up. When you want a board nobody else has, the Maze Maker generates a brand new maze at any size up to expert with its solution, numbered so you can find it again.
The solution sheets
Each maze is one PDF of two pages: the puzzle first, then the solution with the route drawn in as the last page. The catalogue number at the end of each description identifies that exact board forever, so if you print maze number so-and-so for somebody as a challenge, the solution stays findable long after the tab is closed.
How to use these sheets
- Pick a sheet and press Print. The file is a PDF sized for A4 and Letter paper.
- Print it in black and white at normal quality. None of these sheets need colour ink except the colour by number pages.
- Keep the answer page for yourself, or print it too if you want to check the work later.