Group size estimator
How many trainers do I need to invite?
Invite 6 to be safe — 5 if everyone is prepared
- Boss CP
- 62,552
- Boss HP
- 25,000
- 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 | 6(5.53) | 7(6.70) | 8(7.72) | 30:50 | 6.0 |
| Level 25 | 5(4.59) | 6(5.42) | 7(6.34) | 24:57 | 5.9 |
| Level 30 | 5(4.17) | 5(4.88) | 6(5.63) | 22:28 | 5.9 |
| Level 35 | 4(3.97) | 5(4.68) | 6(5.35) | 21:31 | 5.9 |
| Level 40 | 4(3.57) | 5(4.38) | 6(5.13) | 20:09 | 5.9 |
| Level 45 | 4(3.52) | 5(4.25) | 5(4.98) | 19:33 | 5.9 |
| Level 50 | 4(3.45) | 5(4.06) | 5(4.79) | 18:41 | 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.
4 trainers at level 40
- Necrozma (Dawn Wings)3.57
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
5 trainers at level 40
- Necrozma (Dawn Wings)3.57
- Zeraora4.44
- Kartana4.46
- Regieleki4.54
- Xurkitree4.61
- Zekrom4.65
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
6 trainers at level 40
- Lunala4.94
- Giratina (Origin)5.01
- Eternatus5.04
- Tyranitar5.05
- Hydreigon5.08
- Rillaboom5.12
The party these numbers assume
See the full ranked counter list for Mega Slowbro · 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.