BASIC — Hook: your first decision isn't a Pokémon, it's a board
New players get stuck on the same thing in week one: they fall for an Incineroar, read its ability and moves, like what they see, take it to ladder — and get worn down in singles while it dominates in doubles like a completely different Pokémon. The mon isn't the problem. The unanswered question is: which board was it built for? Champions runs doubles and singles as two independent ranked ladders, and the same stat card can be worth twice as much on one as the other. This lesson makes you compute that gap before you ever open the Pokédex.
BASIC — Core: one question per format
Compress each format into a single question and you can already read most of a game:
- Doubles — each turn you send two, the opponent sends two, four on the field at once. The core question is "what can these two do together?" You're managing a small board.
- Singles — one-on-one, trading turns. The core question is "do I stay in or switch?" You're managing tempo and prediction.
Hold onto that, and the rest is just putting numbers behind it.
INTERMEDIATE — Worked → Faded: run the Intimidate and Earthquake math
Start with a fully worked case. Intimidate lowers the target's Attack one stage on entry — that's a ×0.67 multiplier.
- Singles: you send Incineroar, there's one Pokémon across from you, Intimidate hits 1 Attack stat.
- Doubles: the exact same entry drops the Attack of 2 opposing Pokémon at once. One switch-in, double the reach — that's precisely why Incineroar is a pillar in doubles and merely "fine" in singles.
Now the spread math. Earthquake is a spread move in doubles: when it hits multiple targets each hit is ×0.75, and it also hits your own partner.
- Say a clean single-target Earthquake does 100. In doubles hitting both opponents, each takes 100 × 0.75 = 75; but your partner also takes 75 unless it's a Flying-type, has Levitate, or used Protect.
- In singles Earthquake is a clean 100 — no ×0.75, no friendly fire.
Your turn (faded). Now you're holding Rock Slide, a doubles spread move that does 80 single-target. How much does it deal to each of the two opponents, and does it hurt your partner? (Hint: same spread multiplier as Earthquake, but Rock Slide only hits the two opponents, not your own side — so the partner is safe and each opponent takes 80 × 0.75.) Work it out and you've got the doubles damage frame.
INTERMEDIATE — When / Decision: how to sort any Pokémon onto a board
Make it an if-X-then-Y read:
- If the mon's strength is "affecting multiple opponents at once" — Intimidate, Fake Out, partner-enabling support, spread moves — then it's worth more in doubles.
- If the strength is "winning a one-on-one, grinding, pivoting repeatedly" — Regenerator healing on switch, Choice Scarf stealing speed, Stealth Rock chipping on every switch — then it's at home in singles.
- If it's strong both ways (think Garchomp's high Speed and Attack going anywhere) — then pick the board you want to play first, and build around it second.
INTERMEDIATE / ADVANCED — Exceptions: where the simple rule breaks
- Spread isn't always ×0.75. The multiplier only applies when the move actually hits more than one target. In doubles, if only one opponent is left or the other used Protect, your Earthquake is full damage — just as hard as in singles.
- Intimidate's doubled reach gets eaten by immunity. Against Clear Body or Hyper Cutter, Intimidate does nothing to that target, and your "double value" shrinks on the spot.
- Singles cares about turn order too. Don't assume Speed only matters in doubles. Choice Scarf stealing speed, an opponent's Trick Room flipping the order — these decide games in singles as well. You just resolve one speed pairing at a time.
- Mega Evolution works on both boards. Champions' only battle gimmick is Mega Evolution (via the Omni Ring, one per team, holding the matching Mega Stone). It's legal in singles and doubles, so when you judge a Mega form, weigh what it's worth on each board separately.
INTERMEDIATE / ADVANCED — Mistake-Autopsy: the trip beginners take
Symptom: "I brought my singles switch-and-predict habits straight into doubles and kept getting punched through by double the firepower."
Cause: Singles is built on "switch or not" because only one thing is hitting you per turn — the cost of a switch is contained. In doubles two attacks land per turn, so the turn you spend switching hands the opponent two free attacking windows, and you usually can't claw that tempo back.
Fix: In doubles, demote "switch" from your default. First ask "can these two solve the threat this turn with Protect, Fake Out, or focus-firing a target," and save switching for when it's truly forced. Flip it in singles: don't cling to a Pokémon — staying in to get exploited when you should have switched is the most avoidable way to lose a singles game.
INTERMEDIATE — Predict-then-Reveal: answer before you read on
Question: In doubles your Garchomp uses Earthquake while your partner on the field is Gyarados. Both opponents are standing, nobody used Protect. How many Pokémon does this hit, and is your partner safe?
(Answer it yourself, then read on.)
Answer: It hits 3 — the 2 opponents (each taking ×0.75) plus your own partner. But Gyarados is Water/Flying, immune to Ground, so it takes 0. Earthquake only pays off when your partner can sit in it — which is exactly why doubles Earthquake pairs with Flying-types, Levitate, or partners that Protect themselves. That's a "built-for-the-board" pairing that does nothing for you in singles.
ADVANCED — Now-Do-This: run a doubles/singles sort on your own team
Open the Pokédex, pick 3 Pokémon off your team, walk each one's ability and move list, and tag every one:
- Look for multi-target signals — Intimidate, Fake Out, spread moves, partner-enabling support? Yes → leans doubles.
- Look for one-on-one / pivot signals — Regenerator, a speed tier that wants Choice Scarf, switch-chip like Stealth Rock? Yes → leans singles.
- Tag each one — doubles-leaning / singles-leaning / works both ways. If 2 or more of your 3 point at the same board, that's the ladder this team should actually climb.
Do this pass and your next ladder run stops being "this one looks strong" and becomes "this one was built for this board, so I'm bringing it." That's where telling the two formats apart gets concrete.