Platinum breeding, EVs, IVs and natures
Use the original Day Care, inheritance and training rules without later-generation assumptions.
Original Nintendo DS release; not Brilliant Diamond or Shining Pearl.
Use the Solaceon Day Care
Compatible Egg Groups and genders produce Eggs; Ditto can breed with many eligible species. The Egg normally follows the female species, with exceptions such as Ditto pairings. Undiscovered-group Pokémon do not normally breed. Keep room in the party to receive Eggs.
Nature and IV inheritance
In a normal pairing, a female holding an Everstone has a 50% chance to pass its nature in Platinum. In a Ditto pairing, the Everstone must be on Ditto; its nature is checked even when the other parent is female. Different-language parents disable the usual Everstone inheritance in Generation IV. The Destiny Knot does not pass five IVs here. Power-item IV inheritance belongs to HeartGold/SoulSilver and later games, not Platinum. Up to three distinct IVs are inherited; Platinum’s original selection code can repeat a stat, leaving fewer inherited values.
Egg moves and abilities
Generation IV Egg moves generally pass from the male parent; both parents knowing an eligible level-up move can also pass it. A father can pass compatible TM/HM moves. Hidden Abilities do not exist. Check each species profile for Platinum’s actual breeding and learnset data.
Train EVs deliberately
A Pokémon can gain at most 510 total EVs and 255 in one stat; 252 is the usual efficient stat target because four EVs provide one stat point at level 100. The Macho Brace, Power items and Pokérus alter gains. Vitamins stop contributing at the original stat threshold; later unlimited-vitamin rules do not apply. EV-reducing Berries help correct a training plan.
Turn numbers into a usable plan
Most non-neutral natures increase one non-HP stat by 10% and reduce another by 10%. Match the nature, physical/special attacks, ability and held item to a job. Story completion rarely requires perfect IVs; Frontier streaks benefit from more deliberate preparation.
These references cover the original Nintendo DS Platinum. Check story progress, time of day and special access requirements beside each entry.