The Geometry of the Cross Intersection

Every square on an 8x8 board belongs to exactly one row and one column. When a row has seven squares filled and an intersecting column also has seven squares filled, they share a single empty vertex.

Dropping a single block into that intersection square triggers an immediate dual-axis collapse in <a href="https://apps.aagyasharma.com/blockflow/">Block Flow</a>, clearing 15 total blocks in one spectacular move.

Chaining the T-Intersection

Advanced players take this further by constructing dual parallel rows intersecting a single column. Placing a 2x1 domino can trigger a triple-line wipeout that catapults your score instantly.

  • Identify shared intersection squares two turns early.
  • Avoid prematurely filling an intersection with a filler piece.
  • Watch your Tray Heat multiplier surge as dual axes clear.
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Frequently Asked Questions

Does a cross clear award more points than two separate clears?

Yes! Simultaneous cross clears apply an immediate multi-line multiplier bonus on top of standard line clear points.