Overview

Primer is a WIP Binpack to Bulletformat parser based on the Stockfish parsing code.

Filtering options

Primer can filter your data for you as it parses the binpack. Currently it filters positions where the best move is a capture and positions where stm is in check by default. It also offers several optional filtering options:

• --no-filter-captures

Disables the default filtering of positions where the best move is a capture.

• --no-filter-in-check

Disables the default filtering of positions where stm is in check.

• --max-score max_score

Filters all positions with a abs(score) > max_score.

• --min-ply minimum_ply_count

Filters all the positions with a ply count < minimum_ply_count

• --filter-win win_filter_score

Filters positions in a won game (from stm pov) with a score < win_filter_score.

• --filter-loss loss_filter_score

Filters positions in a lost game (from stm pov) with a score > loss_filter_score.

• --limit-positions max_pos_count

Stops after having parsed max_pos_count positions, filtered positions don't count towards the total.

How to convert a file.

Here's an example of a basic Primer command
./primer convert binpackname.binpack desiredbinname.bin --max-score 10000