Group size estimator
How many trainers do I need to invite?
Invite 3 to be safe — 2 if everyone is prepared
- Boss CP
- 52,657
- Boss HP
- 20,000
- 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 | 3(2.27) | 3(2.92) | 5(4.35) | 13:25 | 6.0 |
| Level 25 | 2(1.95) | 3(2.49) | 4(3.50) | 11:27 | 6.0 |
| Level 30 | 2(1.76) | 3(2.15) | 3(2.92) | 9:53 | 6.0 |
| Level 35 | 2(1.69) | 3(2.04) | 3(2.72) | 9:24 | 6.0 |
| Level 40 | 2(1.56) | 2(1.92) | 3(2.55) | 8:49 | 6.0 |
| Level 45 | 2(1.51) | 2(1.82) | 3(2.45) | 8:23 | 6.0 |
| Level 50 | 2(1.48) | 2(1.76) | 3(2.36) | 8:07 | 6.0 |
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.
2 trainers at level 40
- Keldeo1.56
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
2 trainers at level 40
- Keldeo1.56
- Lucario1.86
- Terrakion1.86
- Blaziken1.90
- Urshifu (Rapid Strike)2.12
- Urshifu (Single Strike)2.20
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
3 trainers at level 40
- Necrozma (Dusk Mane)2.38
- Marshadow2.42
- Mewtwo2.43
- Machamp2.48
- Buzzwole2.47
- Raikou2.51
The party these numbers assume
See the full ranked counter list for Chien-Pao · 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.