Read the matchup in order
Always identify the move type first and the defending Pokémon’s type second. The chart is directional: Ground attacks are super effective against Electric defenders, while Electric attacks have no effect on Ground defenders.
ShadowDex deliberately alternates attack and defence wording. Reading the complete sentence before answering is part of the exercise, not decoration.
The four possible outcomes
A super-effective single-type matchup uses a 2× multiplier. A resisted matchup uses ½×, a neutral matchup uses 1×, and an immunity uses 0×. Type Lab focuses on these pure-type relationships before the multipliers from two defensive types are combined.
In a battle with a dual-type defender, multiply both relationships. Two weaknesses can become 4×, two resistances can become ¼×, and any immunity keeps the final damage multiplier at zero.
- Learn immunities first because they change damage to zero.
- Group weaknesses by attacking type instead of memorizing one giant table.
- Use missed-answer review to find inverse matchups that are being confused.
Chart accuracy
The implemented chart is checked against the current Pokémon Database type chart and an independent test fixture covering every ordered combination. Historic generation-specific chart changes are not used in Type Lab.
The Sources page records the reference used and explains the distinction between battle data, artwork, and audio sources.