4-Move and 5-Move Ballots

4-move and 5-move ballots provide a large number of opening positions that are useful for engine matches, generating training games for machine learning, and as a possible alternative to 11-man ballots for tournaments. I did an anlaysis of these ballots to identify which ones are losses. I have also created difficulty ratings for these using the same model that I used for the 11-man ballot ratings. The opening book has been updated so that kingsrow knows how to play all of these correctly.

Ballots stats:

PDN Files

All 4-move ballots

4-move drawn ballots

4-move lost ballots

All 5-move ballots

5-move drawn ballots

5-move lost ballots

Ballot Difficulty Ratings

Table of 4-move difficulty ratings ordered by rating value.

Table of 4-move difficulty ratings ordered by ballot number.

Table of 5-move difficulty ratings ordered by rating value.

Table of 5-move difficulty ratings ordered by ballot number.

Ed Gilbert
Last revised: November 23, 2021.