YOU WILL LEARN

Advanced: read to the end of forcing lines

  • Prune VCF candidates quickly
  • Count defensive resources in VCT
  • Remove counterplay through move order
  • Use forbidden points as tactical resources
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LESSONS

5 Lesson

01

VCF is a continuous sequence of fours

Every move creates a four and restricts the reply until five is completed. A move that loses the force ends the VCF.

Mark exactly how many legal blocks exist after every attacking move.
02

VCT expands the search to threes

Open threes and compound threats can continue the attack, but the wider tree requires checking counter-fours.

Remove the opponent’s reverse four before trusting a VCT.
03

Candidate pruning creates depth

Order moves by immediate win, mandatory block, four, open three and crossing value. Discard empty points with no tactical role.

Three candidates read deeply beat ten candidates read shallowly.
04

Move-order changes remove counterplay

When two threats exist, play the one that prevents the opponent’s future four first. Shape alone does not determine the result.

Choose order based on the opponent’s threat two moves later.
05

Forbidden points are hidden weapons for White

In Renju, White can exploit points Black cannot legally occupy. Black must include future forbidden patterns in every attacking calculation.

A forbidden point removes a candidate and changes the tactical geometry.

CHECKPOINT

Advanced checkpoint

Against advanced AI, write down no more than three candidates and calculate each forcing line for at least three plies before moving.

Play the AI

NEXT

Repeat and review

After the advanced course, review losses. Find the first move where initiative was lost and replay that position.

Play the AI