Defeat the Goldenrod GYM leader Whitney and then go to the little house next to the GYM and talk to the lady and she will give you a squirtle bottle and you use that on Sudowoodo
route 221
Get rid of Sudowoodo
only one, at battle frontier
To move boulders in Pokemon Gold you need a Pokemon with the HM move Strength. Selecting the Pokemon in the menu outside of battle should let you use it if you have beaten the Olivine City Gym.
No, Unfortunately. Move Toturs were introduced in Generation III.
blackthorn city
You can't.
in celestic town
Most water type Pokemon can learn the move Waterfall.
you need a Pokemon that can use HM move whirlpool
squirtlewarturtleblastoisepsyduckgolduckpoliwagpoliwhirlpoliwrathtentacooltentacruelseeldewgonghorseaseadragoldeen seakingstaryustarmiegyradoselaprasvaporeonomanyteomasterkabutokabutopsmewchinchoulanturnmarillazumarillpolitoedquagsireslowkingqwillfishremoraidoctillareekingdrasuicune My Lapras and Gyrados Know the move waterfall
The move Superpower can be tutored to Machamp in Pokemon HeartGold.