You can't. Slowking and Politoed are generation 2 pokemon, and Yellow is a generation 1 game, so Slowking, Politoed, AND kings rock didn't exist at the time.
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you can find a kings rock on seven island in sevault canyon.
yes. if you trade a slowbro holding a kings rock it will evolve after trade.
you find it in cerculan city, right then you will find a pokeball, pick it up, it is a kings rock
You have to have a Friend kings rock poliwhirl first put your kings rock on poliwhirl then get A friend to trade and trade back
There is no Rock Smash HM in Pokémon Yellow.