Group size estimator
How many trainers do I need to invite?
Invite 4 to be safe — 3 if everyone is prepared
- Boss CP
- 19,311
- Boss HP
- 15,000
- Raid timer
- 300s
- Party used
- 6
Trainers needed, by attacker level
Scroll sideways for the mixed-lobby column.
| Attacker level | Six of the best counter | A prepared party | A mixed local group | Prepared solo time | Faints per timer |
|---|---|---|---|---|---|
| Level 20 | 4(3.79) | 5(4.17) | 5(4.98) | 19:43 | 6.0 |
| Level 25 | 4(3.29) | 4(3.66) | 5(4.29) | 17:17 | 5.8 |
| Level 30 | 3(2.89) | 4(3.22) | 4(3.87) | 15:13 | 5.5 |
| Level 35 | 3(2.80) | 4(3.10) | 4(3.67) | 14:37 | 5.3 |
| Level 40 | 3(2.64) | 3(2.98) | 4(3.48) | 14:04 | 5.1 |
| Level 45 | 3(2.52) | 3(2.88) | 4(3.40) | 13:35 | 4.9 |
| Level 50 | 3(2.46) | 3(2.79) | 4(3.27) | 13:10 | 4.8 |
Whole trainers in bold, the raw estimator in brackets — 2.04 means two trainers is right on the line and three is comfortable.
Six of the best counter
Every trainer brings six copies of the single best counter — the theoretical floor.
3 trainers at level 40
- Blacephalon2.64
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
3 trainers at level 40
- Blacephalon2.64
- Rayquaza2.80
- Mewtwo2.91
- Reshiram3.08
- Necrozma (Dusk Mane)3.21
- Salamence3.24
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
4 trainers at level 40
- Toucannon3.42
- Chandelure3.40
- Volcarona3.41
- Enamorus (Incarnate)3.45
- Darmanitan (Standard)3.46
- Rampardos3.50
The party these numbers assume
See the full ranked counter list for Whirlipede · check a real lobby (win chance, who brings what) · make a share card of the top six
How this is worked out
The boss is ranked once at level 40 with rankCached (the same memoised call /raids makes), then the three bands — rank 1, ranks 1-6, ranks 13-24 — are re-simulated at each attacker level with an 8-run Monte Carlo each. Holding the party fixed and moving only its level is deliberate: it answers "what if my party were level 20" rather than "what would a level-20 player's completely different party be", and it is about ten times cheaper than re-ranking every attacker seven times. The Estimator itself is Pokebattler's definition, time to win including rejoin time divided by the raid timer.