Group size estimator
How many trainers do I need to invite?
Invite 4 to be safe — 3 if everyone is prepared
- Boss CP
- 38,763
- 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 | 5(4.25) | 5(4.76) | 6(5.87) | 22:30 | 6.0 |
| Level 25 | 4(3.29) | 4(3.98) | 5(4.89) | 18:48 | 6.0 |
| Level 30 | 3(2.61) | 4(3.29) | 5(4.02) | 15:32 | 6.0 |
| Level 35 | 3(2.48) | 4(3.06) | 4(3.73) | 14:28 | 6.0 |
| Level 40 | 3(2.38) | 3(2.92) | 4(3.53) | 13:48 | 6.0 |
| Level 45 | 3(2.32) | 3(2.83) | 4(3.40) | 13:21 | 6.0 |
| Level 50 | 3(2.25) | 3(2.76) | 4(3.26) | 13:01 | 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.
3 trainers at level 40
- Keldeo2.38
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
3 trainers at level 40
- Keldeo2.38
- Terrakion2.73
- Lucario2.96
- Blaziken3.19
- Kartana3.12
- Gallade3.14
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
4 trainers at level 40
- Conkeldurr3.32
- Raikou3.33
- Mewtwo3.42
- Hisuian Decidueye3.47
- Latios3.47
- Urshifu (Single Strike)3.57
The party these numbers assume
See the full ranked counter list for Ursaring · 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.