Group size estimator
How many trainers do I need to invite?
Invite 3 to be safe — 3 if everyone is prepared
- Boss CP
- 39,867
- 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(2.72) | 4(3.31) | 5(4.37) | 15:14 | 6.0 |
| Level 25 | 3(2.25) | 3(2.72) | 4(3.57) | 12:31 | 6.0 |
| Level 30 | 3(2.00) | 3(2.41) | 4(3.16) | 11:06 | 6.0 |
| Level 35 | 2(1.92) | 3(2.26) | 3(2.98) | 10:24 | 6.0 |
| Level 40 | 2(1.79) | 3(2.14) | 3(2.81) | 9:51 | 5.9 |
| Level 45 | 2(1.75) | 3(2.07) | 3(2.74) | 9:33 | 5.9 |
| Level 50 | 2(1.70) | 3(2.01) | 3(2.64) | 9:15 | 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.
2 trainers at level 40
- Keldeo1.79
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
3 trainers at level 40
- Keldeo1.79
- Lucario2.08
- Terrakion2.08
- Blaziken2.21
- Kartana2.27
- Conkeldurr2.44
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
3 trainers at level 40
- Mewtwo2.69
- Galarian Zapdos2.70
- Cobalion2.72
- Hariyama2.75
- Buzzwole2.79
- Raikou2.78
The party these numbers assume
See the full ranked counter list for Obstagoon · 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.