Group size estimator
How many trainers do I need to invite?
Invite 4 to be safe — 4 if everyone is prepared
- Boss CP
- 37,477
- 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 | 5(4.55) | 6(5.18) | 6(5.86) | 23:50 | 5.9 |
| Level 25 | 5(4.27) | 5(4.40) | 6(5.01) | 20:14 | 5.8 |
| Level 30 | 3(2.90) | 4(3.86) | 5(4.39) | 17:47 | 5.7 |
| Level 35 | 3(2.80) | 4(3.71) | 5(4.15) | 17:05 | 5.6 |
| Level 40 | 3(2.76) | 4(3.43) | 4(3.97) | 15:48 | 5.5 |
| Level 45 | 3(2.69) | 4(3.35) | 4(3.85) | 15:24 | 5.4 |
| Level 50 | 3(2.50) | 4(3.25) | 4(3.70) | 14:56 | 5.3 |
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
- Necrozma (Dawn Wings)2.76
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
4 trainers at level 40
- Necrozma (Dawn Wings)2.76
- Darkrai3.53
- Kyurem (Black)3.55
- Hydreigon3.58
- Lunala3.58
- Eternatus3.61
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
4 trainers at level 40
- Hoopa (Unbound)3.90
- Gholdengo3.90
- Chandelure3.92
- Hisuian Zoroark3.95
- Zacian (Crowned Sword)3.96
- Volcarona3.96
The party these numbers assume
See the full ranked counter list for Grumpig · 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.