Back to Encyclopedia
TechnicalLast Updated: 2026-07-18
Principal Variation
"The engine's current best line for both sides from the analyzed position."
In-Depth Explanation
The principal variation, often abbreviated PV, explains the moves behind an evaluation. MultiPV displays several candidate lines, but lower-ranked lines may be substantially weaker. Use the PV to identify tactical points and plans rather than memorizing a long computer sequence without context.
Recommended Tools
Frequently Asked Questions
What does principal variation mean in chess?
The engine's current best line for both sides from the analyzed position.
How can I practice principal variation?
Use a real game in the Plychess analysis tools and identify where principal variation affected the position or result.
Want to master your chess openings?
Join thousands of players who use our cloud repertoire lab to store and train their secret weapons.
Get Started with Repertoire Master (PRO)