Strategy · 6 min read
The Sudocious Playbook: Solving the Daily Sudoku Without Guessing
The daily is Medium and has one solution. Every guess you make is a shortcut with a price, and the price is 300 points.
Scan digits, not cells
Beginners pick an empty cell and ask "what goes here?" — a question with up to nine answers and no fast way to check them. Strong solvers ask the reverse: "where does the 7 go in this box?" Pick a digit, find every copy already placed, and cross-hatch the rows and columns those copies occupy. Any 3 × 3 box left with a single open cell for that digit is a free, provable placement. Run 1 through 9 once and you will usually place six to ten digits before you have to think at all.
Then repeat. Every placement changes the picture for the digits that follow, so a second pass through 1–9 finds placements the first could not. The rhythm — scan, place, rescan — is why the highlight matters: tap any filled digit and every copy lights up, so the cross-hatch is drawn for you.
Hunt the nearly finished lines
A row or column with seven digits placed has two gaps and two missing digits. One of the two will be blocked in one gap by a crossing column or box, which forces the other — and both fall in a moment. Rows near completion are the cheapest points on the board; when the digit scan stalls, sweep the grid for any line or box with only two or three gaps and finish it.
The same reasoning works on boxes. A box with two open cells and two missing digits is a pair waiting to be resolved by whichever row or column already contains one of them. Train yourself to see "two gaps" as a flag, not a detail.
Notes are for pairs, not for everything
Sudocious lets you pencil candidates into any cell for free, and the reflex is to fill every empty cell with every possibility. Do not. A board covered in marks is harder to read than an empty one, and the daily rarely needs it. Use Notes surgically: when a cell is down to exactly two candidates, mark both; when a digit has exactly two possible homes inside a box, mark both cells. Those pairs are precisely what the next placement will resolve, and the game clears a penciled digit from its row, column and box the moment you place it, so the bookkeeping is done for you.
A pair of pairs is the Medium puzzle's deepest trick. If two cells in a row each hold only the candidates 4 and 9, then 4 and 9 live in those two cells and nowhere else in that row — so you can strike them from every other cell in the line. Spotting a naked pair is usually the moment a stuck grid opens up again.
Two mistakes are a budget, not a cushion
The scoring is blunt: your finish is counted as mistakes plus one out of a budget of four, and every unused step is worth 300 points. A clean grid banks 900; one mistake drops you to 600; two to 300; the third ends the puzzle. Speed is worth at most 240 points across a 30-minute cap, so no amount of pace recovers a single wrong digit. That arithmetic should change how you play: a placement you cannot prove is not a fast move, it is a 300-point coin flip.
When two digits both seem possible for a cell, that is a Notes moment, not a placement. The daily is built to be solved by logic alone — if you are stuck, there is a deduction you have not found yet, and the way to find it is to rescan from 1, not to gamble.
When a Hint beats a mistake
A Hint fills the selected cell (or the first empty one) with the correct digit for 100 points. It never counts as a mistake and never ends the game, though it does rule out a Perfect run and the Pure Sudocious achievements. Compare the prices: a Hint costs 100, a wrong guess costs 300 and moves you a step closer to losing everything. If you have exhausted the scan and are about to guess between two candidates, take the Hint on that exact cell — you keep the 200-point difference and, more importantly, the cell you were stuck on is usually the key that unlocks the rest of the grid.
The Hint is not for speed. Using it to skip thinking on a cell you could have solved costs you 100 points and the Perfect run for nothing. Use Undo freely instead — it is unlimited and free, though it never refunds a mistake or a hint — and save the Hint for a genuine dead end.
Pace for the leaderboard
Because everyone plays the same grid, the Sudocious leaderboard is a pure comparison of cleanliness first and time second. Almost every strong finish is a zero-mistake grid, so the podium is decided by the clock — and the clock is won in the opening two minutes, when the digit scan places the easy dozen. Do the first full pass through 1–9 without pausing to think about anything else, then slow down for the pairs.
Pro Unlimited lets you drill Easy grids (solvable by singles alone) and Hard grids (which demand pencil marks) without touching your daily. The Easy drills make the scan automatic; the Hard drills teach the pair logic the daily only occasionally needs. Like every More Games title, none of it touches your Daily Sweep.
Put it into practice — Wordocious gives everyone the same daily puzzle in every mode, so you can test these ideas and compare your result on the global leaderboard.