|Please note that this glitch only exists in the Japanese versions of the game, or is otherwise a glitch from a Pokémon game which was only released in Japan.
Surf from a cliff is a natural glitch only found in the Japanese Pokémon Red and Green.
The player can use Surf from the 'north edge' tile of a rock. Since surfing this way doesn't give the 'current is too fast' message, it is possible for the player to catch Articuno without solving the boulder puzzle.
Surfing from a cliff in Seafoam Islands.