ALTER TABLE "game_info"
    ADD COLUMN "pgn"          varchar,
    ADD COLUMN "rated"        boolean,
    ADD COLUMN "time_class"   varchar,
    ADD COLUMN "rules"        varchar,
    ADD COLUMN "white_rating" int,
    ADD COLUMN "black_rating" int,
    ADD COLUMN "white_result" varchar,
    ADD COLUMN "black_result" varchar;