The Opening Move · Pips
Pips strategy — solve the daily domino puzzle faster
The short answer
The fastest way to solve a Pips board is to start with the most constrained region — a tight sum, or an equals region that can only take a double — place the domino it forces, then let that placement cascade. Count what is left in the tray, bound the comparison regions, and treat blank regions as free space.
Why the tightest region wins
Every Pips board has exactly one solution, which means every domino has one correct home — you just have to find the order that reveals them. Guessing in the open middle of the board wastes moves, because a cell with four empty neighbours could accept almost anything. The information is at the edges of possibility: the regions and cells that admit only one option.
That is why the single biggest lever you have is where you look first. A region whose rule can be met one way — a two-cell sum that only one pair reaches, or an equals region that demands a double — is a free placement. And because most dominoes straddle a region border, that first forced piece usually reaches into a neighbouring region and constrains it too. One good foothold turns the rest of the board into a chain of consequences.
None of this is guesswork. The same reasoning our backtracking solver uses — place into the tightest spot, prune anything that breaks a rule, repeat — is exactly what you can do by eye, just faster than trial and error. The tactics below are that method, broken into the moves you can spot on a real board.
Seven tactics that break a board open
| Tactic | What to look for | Why it works |
|---|---|---|
| 1 Read the tightest region | A small sum or equals region with only one option | A region that can be met one way is a free placement — the ideal place to begin. |
| 2 Force the doubles | A two-cell equals region | If one domino covers it, it must be a double; doubles are scarce, so the piece is often forced. |
| 3 Count the tray | Which pip values are still unplaced | A sum has no answer if the pips it needs are gone — counting kills impossible placements. |
| 4 Bound the comparisons | The smallest and largest total a <N or >N region can hold | When the range only just clears the rule, the pips are pinned to a narrow band. |
| 5 Corner the exact cover | A cell with only one legal domino left | Every cell is covered exactly once; a cell down to one option must take it. |
| 6 Bank the blanks | Regions with no rule at all | Blank regions absorb the values that would break a stricter region — solve the strict ones first. |
| 7 Watch the border-straddlers | A domino whose two ends fall in different regions | That piece answers to two rules at once, so it cross-checks and often breaks a tie. |
How to read this. Tactics one and two find your opening; three, four and five are the deductions that keep the chain moving; six and seven are the ideas that resolve the last few ambiguous pieces. You rarely need all seven on one board — but knowing which to reach for is what turns a stare into a solve.
A worked mini-sequence
Watch the tactics chain together on a small four-cell board. It has two regions of two cells each — a left column marked >9 and a right column marked equals — and a tray of two dominoes: the six–five and the three–three (a double three).
| Region | Its two cells | Rule | The tactic that cracks it |
|---|---|---|---|
| Left column | top-left & bottom-left | >9 | bound the comparison |
| Right column | top-right & bottom-right | Equal (=) | force the double |
Step one — bound the comparison. The left column is marked >9, so its two pips must total at least 10. Two cells can hold at most six plus six, or 12, so the pair has to total 10, 11 or 12 — both cells are high. That already tells you no low domino belongs there.
Step two — force the double. The right column is an equals region. If one domino covers both its cells, that domino must be a double, and the only double in the tray is the three–three. It is forced into the right column with no guessing.
Step three — count and cover. With the three–three spent, only the six–five remains, so it must fill the left column — and six plus five is 11, which clears the >9 bound comfortably. Every cell is now covered exactly once, both region badges flip to a check, and the board is solved. Bound, force, count: three tactics, one clean chain.
A quick parity note that saves time on bigger boards: because each domino covers two cells, any region with an odd number of cells can never be filled by whole dominoes alone — at least one domino must poke across its border. Spotting an odd region tells you, before you place anything, that a border-straddler is guaranteed there.
Common mistakes to avoid
Pips strategy FAQ
What is the best way to start a Pips puzzle?
Start with the most constrained region rather than the biggest. A small sum region with only one matching pair, or an equals region that can only be filled by a double, gives you a forced placement to build outward from. Lock in the region that admits a single option first, then let that piece narrow everything it touches.
How do I handle the less-than and greater-than regions?
Bound them. Work out the smallest and largest total the region could hold from the cells it has, then compare that range with the rule. A two-cell region marked >9 can hold at most 12, so it must total 10, 11 or 12 — both cells are high, which sharply limits which dominoes can go there. When the range only just clears the rule, the placement is nearly forced.
What does an equals region tell me?
An equals region needs every pip value inside it to match. If a single domino covers a two-cell equals region, that domino must be a double, because only a double shows the same number on both ends. Doubles are scarce, so an equals region is often the fastest forced placement on the board.
Are blank regions useful?
Yes. A blank region has no constraint, so it will accept any pips. Treat it as freedom: it is the natural home for a domino whose values would break a stricter region, and it lets you resolve the tightly ruled regions first without worrying where the leftovers land.
Do I have to use the hint or the solver?
No. The Hint button drops one correct domino and Show solution reveals the whole board, but both are optional. They are there for when you are genuinely stuck. Solving without a hint is what counts toward your no-hint best time, so use them sparingly if you are chasing a clean streak.
Got a plan? Put it to the board.
The fastest way to stall a solve is to start in the middle, where every cell has options, instead of at a region that has almost none. Force yourself to find the tightest region before you place a single domino — the board opens far quicker from a corner that only goes one way.
Judging a region before it is full. A sum region is not broken just because it is under target while half-empty; it still has cells to fill. Only call a rule met — or broken — once the region is completely covered. The one exception is a total that has already overshot a sum or a less-than cap, which can never be walked back.
Forgetting the domino has two ends. Every piece you place lands two pips, often in two different regions. Solvers who plan only the end they care about are surprised when the other end quietly breaks a neighbour. Check both sides before you commit.
Ignoring orientation. A domino can usually go in two ways round, and the difference matters when it straddles a border — a six–two reads very differently depending on which region gets the six. When a placement half-works, try flipping it before you abandon it.
Leaving the blanks until last by accident. Blank regions are a resource, not an afterthought. If a value keeps breaking a strict region, it probably belongs in the blank — route it there deliberately rather than discovering it by elimination.