Downstacking: How to Dig Yourself Out

Clearing your way down to a buried hole is a distinct skill, and it is the one that turns bad runs into recovered ones.

Downstacking is clearing lines specifically to reach and eliminate a buried hole. It is a different skill from building, and most players are far worse at it because they only practise it under panic.

The goal is not points

When downstacking, you are not trying to score. You are trying to reduce the number of rows above the hole to zero. Singles are fine. Doubles are fine. Breaking your back-to-back chain is fine. Survival first.

Players lose runs by trying to downstack and score at the same time. Pick one.

The method

Find the shallowest hole. If you have several, work on the one with the fewest rows above it. Clearing those rows may expose the others anyway.

Identify the row directly above it. That is your target. Complete it, clear it, and the hole is one row closer to the surface.

Do not add rows above the hole. Every piece you place elsewhere is fine. Every piece you place on top of the hole's column makes the job longer.

Repeat until the hole is exposed, then fill it.

The trap

The obvious mistake is filling the row above the hole in the hole's own column, which does nothing except add to the pile. You want to complete the row using the other nine columns.

Using the awkward pieces

Downstacking is where L and J earn their keep. Rotated vertically they fill single-column gaps at the edge of a stack without disturbing the surface, and rotated horizontally they tuck under overhangs.

The T is also useful for the same reason: it fits a one-cell notch cleanly.

The mindset

Digging is unglamorous and it feels like losing. It is not. A run where you buried a hole at level four, spent eight pieces removing it, and continued to level twelve is a better run than one where you built beautifully over the top of it and died at level seven.

Practise it deliberately: start a run, deliberately bury a hole in the first ten pieces, and dig it out. You will use the skill constantly.

Read next

• Keep the Stack Flat: The One Habit That Matters MostA flat surface accepts every piece. A jagged one accepts a few. Most runs end because the board stopped accepting what the bag offered.
• Never Bury a HoleA covered gap costs you every row above it. Taking a worse placement to avoid one is nearly always correct.
• The Nine-Column Stack and the Open WellFill nine columns flat, leave one open, and wait for the long piece. The standard shape for a high score.
• Six-Three Stacking and Why Some Players Prefer ItSplitting the board into two flat regions instead of one gives you somewhere to put the awkward pieces.
• The Super Rotation System, ExplainedFour defined states per piece and a table of fallback offsets, which is what lets a piece spin into a gap it should not fit.
• Exactly How a Run EndsNot when the stack looks full, but when a new piece has nowhere to spawn.