Reading Your Opponent's Board

Their well depth, their stack height and the shared queue tell you when their attack is coming.

In a duel you can see the other player's well. Most people glance at it occasionally. It is worth reading properly.

The three things to watch

Well depth. If they have nine columns stacked and one open, count the depth. Four rows means a four-row clear is available the moment they get an I. Two rows means they still need to build.

Stack height. How close are they to the top? A player above the danger line cannot afford to wait, which means they will take smaller clears and send less.

Their garbage meter. If they are already holding queued rows, additional pressure is far more likely to finish them.

Using the shared sequence

Both players draw from the same seeded bag, so their queue is your queue. That turns reading into something close to calculation.

If you can see an I two pieces away and their well is four deep, they are about to send four or five rows. You have two pieces to prepare: either build a cancel, or accept the hit and plan your recovery.

Equally, if the I has already come out of the current bag and their well is open, you know they are waiting and cannot attack soon. That is your window to build something big without fear of interruption.

What to do with the read

They are about to attack: build a cancel now, not after it lands.

They cannot attack for several pieces: take the risk. Deepen your well, set up a T-spin, do the thing that needs uninterrupted time.

They are high and struggling: send anything. Even a double. A player near the top does not need much.

The limit

Do not spend so long watching their board that you misplace your own pieces. The read is a glance between placements, not a study. A player who reads perfectly and stacks badly loses to one who does the reverse.

Read next

• The Attack Table: What Each Clear SendsEvery clear type converted into rows of garbage, plus the bonuses that stack on top.
• Combo Pressure: Why Small Attacks Can Beat Big OnesContinuous garbage denies your opponent the quiet piece they need to survive.
• How to Open a DuelThe first twenty pieces decide more duels than anything that follows.
• Defending When You Are BehindA tall stack and a full meter is recoverable, but not by playing carefully.
• Read the Queue, Not the Falling PieceIf you are deciding where the current piece goes while it falls, you are already too slow for level ten.
• Building for the Pieces You Do Not WantS and Z arrive once per bag, guaranteed. A stack with nowhere for them is a stack that is about to fail.