10×10 Queens puzzles — unlimited practice

A fresh 10×10 board whenever you want one, at any difficulty, with 935 finished 10×10 boards behind this page. It is the biggest board the calendar ever serves, and the rung the Daily Max finishes on. Place 10 queens: one in every row, one in every column, one in every colour, and no two touching — corners included. Change the difficulty with the pill beside the board, switch size from the Unlimited tab, and keep going: no daily limit, no streak to protect, no clock you have to beat.

What a 10×10 Queens board asks of you

A hundred squares and ten colours. What gets harder is not the reasoning but the bookkeeping around it: a deduction three steps deep is the same deduction it was on a 6×6, except now you have to keep the first two steps marked and visible while you go looking for the third.

Which technique opens the board is what the difficulty pill beside it really changes. The strategy guide works through each named technique in the order the solver reaches for them, and the hint button on this board names the same ones.

Difficulty at 10×10 is a claim about the reasoning

The label never describes the square count — every board on this page has the same 100 squares. It describes what a board demands before it gives up its first queen, and the two move independently: a 10×10 rated beginner can be a shorter read than a 5×5 rated hard, 75 extra squares and all. The Queens Unlimited hub makes the same case with two real boards side by side.

Beginner — 180 boards. One region already holds a single square, so the first queen is free and the rest falls to counting rows, columns and colours. That one gift is deliberate: from an empty grid the simplest techniques have nothing to bite on without it.
Easy — 324 boards. Opens on a colour confined to one row or column. It owns that line, everything else in the line is dead, and the 10×10 comes apart from there.
Medium — 324 boards. Several of those confinements chained together, each one visible only after the last has been marked off — which across 100 squares means marking is part of the technique, not tidying up after it.
Hard — 107 boards. Pigeonhole arguments spanning several of the 10 regions at once, plus the exclusion reasoning that rules a square out by showing what it would break.

Medium, then hard — the exact pair the Daily Max ends on, which makes this the most directly useful practice on the site if the last two levels are where your run falls apart.

Practising at 10×10

Finish what you start. The commonest way to lose time on a 10×10 is to spot a promising line, half-mark it, notice something else, and come back to a board that no longer shows which of the two you were part-way through.

Two things hold at every size. A hint never guesses: it finds the next move a person could justify, names the technique, and waits for you to press show me before it marks anything. And boredom means move up a difficulty, not a size — the same reasoning with more squares around it is not new practice. The hub page has the full method.

Every 10×10 board here is provably fair

Each one was checked twice: once for having exactly one solution, and once for being reachable from an empty grid without a single guess. The check reruns over the whole pool before every release, so it covers all 935 10×10 boards rather than the handful anybody happened to play. If you are stuck here, there is a next step and the hint can name it.

Where 10×10 sits

Levels nine and ten of the Daily Max are 10×10, at medium and at hard. Nothing on the site goes bigger than this on a schedule.

Daily Mini — three boards a day, 6×6 to 8×8. The one that carries a streak.
Daily Max — ten boards a day, climbing to 10×10 and finishing harder than the Mini ever gets.
Archive — every past day, still playable and still scored the same way.
9×9 practice — one step down, if 10×10 is currently more search than reasoning.
11×11 practice — one step up, once 10×10 at hard has stopped surprising you.

Every Queens board size

Questions people ask about 10×10 Queens puzzles

How many queens does a 10×10 board take?: 10 — one per row, one per column, one per colour. There are always exactly 10 colours, and no two queens may touch, corners included.
Is 10×10 harder than a smaller board?: Bigger, not necessarily harder. Difficulty here describes the reasoning a board demands. A large board with generous regions can fall to counting alone, while a small one can need an argument spanning several regions at once.
How many 10×10 Queens puzzles are there?: 935 in the pool for this size, split across the four difficulties — 180 beginner, 324 easy, 324 medium, 107 hard. The picker avoids repeats within a session, so you will not see the same 10×10 twice in an evening.
Which difficulty should I start with on 10×10?: Medium, then hard — the pair the Daily Max ends on.
Do these count towards my streak?: No. Streaks come from the daily boards. Practice is for drilling, so nothing here can break a run — or build one.
Can I play a 10×10 board on a phone?: Yes. The board sizes itself to the screen, so it stays tappable one-handed. If colour is not a reliable channel for you, turn on high-contrast colours in Settings and the regions separate by lightness instead of hue.