Renju VCF #4996346 (3-move VCF)
To move: Black — find the move that forces a win by fours
Winning line
H3 → H2 → I3 → E3
Why this move works
The answer is H3. The four forces White to block at H2.
Then I3 is a double threat White cannot stop, and E3 makes five — a clean short VCF.