What is Zero Absoluto
Zero Absoluto fills a six-by-seven grid with warm numbers from +1 to +9 and cold numbers from −1 to −9. You drag across touching cells, diagonals included, to build a chain. When the chain adds up to exactly zero and holds at least three numbers, you release it. The chain clears, you score, and a few seconds return to an energy bar that drains without stopping. New numbers fall from the top and the run continues until the bar empties.
The difficulty comes from that bar. Every second spent looking for a chain is a second you no longer have, and the best chains are the slowest to find. A clear is worth the total size of its numbers, times its length, times your combo, so a long chain of large digits can be worth twenty times a quick three. The board also rebalances itself: new values lean toward whichever sign the grid is short of, so you are never truly stuck, only too slow.
How to play
- Press Play, then hold a number and drag to a neighbouring cell. Diagonals count, so each cell has up to eight exits.
- The readout under the board shows your running total. It turns green when the total is zero and the chain has three or more cells.
- Release while it is green. The chain clears and gives back two seconds plus one per cell, and four more if a golden cell was in it.
- Keep going until the energy bar empties. A hint costs four seconds, a shuffle costs six, and both need enough energy left to pay for them.
Strategies that work
- A chain of exactly three resets your combo to one; four or more raises it, up to eight. Once a combo is running, avoid three-cell clears unless the bar is nearly empty.
- Score uses the sum of the absolute values, so +9, −9, +7, −7 pays far more than +1, −1, +2, −2 at the same length. Reach for big digits when you have the time.
- Golden cells double the whole clear and return four extra seconds. Only two can sit on the board at once, so route a long chain through one instead of spending it on a bare three.
- Look for a pair that already cancels, such as +6 beside −6, then find a second cancelling pair touching it. Two pairs make a four-cell chain, quick to trace and enough to keep the combo climbing.
- Buy a hint early, when one clear pays the four seconds straight back. Late in a run, with the bar flashing, take any zero you can already see instead.
A little history
Zero Absoluto is an original game rather than a digital copy of an older one, but its central rule is old mathematics. Asking whether some group of numbers cancels to zero is a form of the subset-sum problem, which becomes hard to solve as the set grows; the game keeps it playable by forcing chains through touching cells, turning an abstract search into something the eye can do. The numbers carry history of their own. Negative quantities were handled with red and black counting rods in Han-dynasty China and were given formal rules by the Indian mathematician Brahmagupta in the seventh century, long before European mathematics accepted them. The theme comes from physics: absolute zero is the lowest temperature there is, the point where nothing is left to give, and the game reads its warm and cold numbers as heat and cold meeting and cancelling out.
Frequently asked questions
How long does a run last?
It starts with thirty seconds of energy and every clear buys more back, so the length depends on you. A first attempt often ends in under a minute; a good run passes five. There are no fixed levels — the run ends when the bar reaches zero.
Can the board become impossible?
No. After each clear the game checks that at least one zero-sum chain of six cells or fewer exists, and reshuffles the values if none does. If you cannot see a chain, one is still there, and the hint will point to it.
Why did my chain not clear?
Both rules have to hold at once: the sum must be exactly zero and the chain must contain at least three cells. A pair like +5 and −5 is balanced but too short. The readout tells you which rule is missing before you release.
