Same stone
Evolve with the same stone/item
The Same stone connection is one of the evolution rules in the daily PokéWired Pokémon puzzle. Two Pokémon are linked by it when this holds: Evolve with the same stone/item.
It's not directional: it works both ways, so it doesn't matter which Pokémon goes on the left and which on the right. It belongs to the Hard rule set, so you'll only run into it in Hard puzzles.
Evolution connections look at where a Pokémon sits in its family: which stage it is, how long its line is, and how it evolves — by level, by stone or by another method.
Examples
Real Pokémon pairs that satisfy the same stone connection:
Pikachu#25Same stone
Magneton#82Evolve with Thunder Stone
Sandshrew#27Same stone
Vulpix#37Evolve with Ice Stone
Nidorina#30Same stone
Nidorino#33Evolve with Moon Stone
Nidorino#33Same stone
Clefairy#35Evolve with Moon Stone