This really works because ive done it alot of times so first, solve the Kabuto puzzle, which is in the place where u can get the unknown the rest will require athe hm move surf and the tm moverocksmash and the hm move strength. Surf down by the Anciont ruins and solve the puzzle there. the puzzle should be somewhat easy. Just put the corners in first. then go to the connection cave and walk around and find the pokemaniac. If you not have defeated him then battle him. Then surf in the waters near him, you will have to return hear twice. Break the rock you find and solve the puzzle. Then return, move the boulder, and solve the last puzzle . catch the different anon then exit the ruins. Talk to the scientist near the cave and he will give u a complimentary anon pokedex.