Group size estimator
How many trainers do I need to invite?
Invite 5 to be safe — 4 if everyone is prepared
- Boss CP
- 60,652
- 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(4.12) | 5(4.78) | 6(5.96) | 21:59 | 6.0 |
| Level 25 | 4(3.43) | 5(4.16) | 6(5.09) | 19:07 | 6.0 |
| Level 30 | 4(3.16) | 4(3.52) | 5(4.53) | 16:13 | 5.9 |
| Level 35 | 3(2.92) | 4(3.28) | 5(4.24) | 15:05 | 5.9 |
| Level 40 | 3(2.82) | 4(3.12) | 5(4.01) | 14:20 | 5.8 |
| Level 45 | 3(2.76) | 3(2.96) | 4(3.82) | 13:38 | 5.7 |
| Level 50 | 3(2.66) | 3(2.84) | 4(3.62) | 13:04 | 5.7 |
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
- Zacian (Crowned Sword)2.82
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
4 trainers at level 40
- Zacian (Crowned Sword)2.82
- Eternatus2.91
- Enamorus (Incarnate)3.12
- Xerneas3.17
- Tapu Lele3.29
- Togekiss3.39
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
5 trainers at level 40
- Hatterene3.68
- Tapu Bulu3.66
- Mewtwo3.67
- Sylveon3.72
- Dialga (Origin)3.98
- Granbull4.04
The party these numbers assume
See the full ranked counter list for Koraidon · 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.