Group size estimator
How many trainers do I need to invite?
Invite 4 to be safe — 4 if everyone is prepared
- Boss CP
- 38,355
- 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(4.44) | 5(4.94) | 7(6.66) | 23:19 | 6.0 |
| Level 25 | 4(3.83) | 5(4.30) | 6(5.32) | 20:20 | 6.0 |
| Level 30 | 4(3.37) | 4(3.75) | 5(4.36) | 17:43 | 6.0 |
| Level 35 | 4(3.17) | 4(3.43) | 5(4.13) | 16:13 | 6.0 |
| Level 40 | 3(2.94) | 4(3.17) | 4(3.97) | 14:59 | 6.0 |
| Level 45 | 3(2.86) | 4(3.08) | 4(3.82) | 14:32 | 6.0 |
| Level 50 | 3(2.75) | 3(2.95) | 4(3.70) | 13:57 | 5.9 |
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
- Kyurem (White)2.94
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
4 trainers at level 40
- Kyurem (White)2.94
- Eternatus3.06
- Rayquaza3.15
- Kyurem (Black)3.31
- Reshiram3.30
- Blacephalon3.26
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
4 trainers at level 40
- Toucannon3.79
- Enamorus (Incarnate)3.85
- Nihilego3.84
- Naganadel3.88
- Galarian Articuno3.92
- Blaziken3.99
The party these numbers assume
See the full ranked counter list for Tangrowth · 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.