馆 Challenge the House 与馆对局

Send us a grid that got the better of you.

Any grid, any level. We'll tell you straight away whether it's one for our solvers — or show you the move you missed.

Your grid

Givens only

Pick a cell, then a number. Arrow keys move, 1–9 fill, 0 clears.

Grids people sent in, and what our solvers found. Published rows carry the replay and, where there's one, the written study.

Only mine

Sort

馆 Accepted for the House

Valid grid, one solution — and it doesn't come out with the standard techniques. That's the kind we want.

You'd be Nth in line. Not a wait — a place at the table. Each grid gets a full solve by hand before the next one starts.

Name it (optional)

Where you found it (private) Never shown publicly. For our records only.

What happened when you tried? (optional)

So we can write back Email * Kept private, never published. Receipts about this grid only.

Credit name *

Credit me publicly Credit me anonymously

I encountered this puzzle honestly and grant Orbace the right to publish a solve and commentary.

We'll write to you at every step. Nothing else, ever. Check a different grid

解 Solved for you, now

This one opens up without heavy machinery. There's a hidden single at R5C5 — that's the cell that unlocks the rest.

Grids that resist the standard techniques go to the House. Send us another if you find one.

校 Two cells in conflict

There's no solution to this grid, which almost always means a digit got mistyped on the way in. These cells are in conflict:

歧 A finding · not unique

There aren't enough givens to fix a single answer. That's a printing error, not your mistake.

馆

Nothing else, ever.