6x6 Reversi (Othello) Score-Based Semi-Strong Solution Tablebase (Artifact and Proof Certificate)

This record provides a tablebase for the score-based semi-strong solution of 6x6 Reversi (Othello), together with a Python script for querying game-theoretic values from specified positions. The tablebase includes both the solution artifact entries needed to answer exact-value queries after optimal moves and additional proof-certificate entries visited during the alpha-beta searches used to certify those optimal moves.