Group size estimator
How many trainers do I need to invite?
Invite 4 to be safe — 3 if everyone is prepared
- Boss CP
- 51,512
- 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(2.76) | 4(3.19) | 5(4.68) | 14:40 | 6.0 |
| Level 25 | 3(2.39) | 3(2.68) | 4(3.91) | 12:20 | 6.0 |
| Level 30 | 3(2.07) | 3(2.37) | 4(3.47) | 10:53 | 5.9 |
| Level 35 | 3(2.01) | 3(2.27) | 4(3.32) | 10:28 | 5.9 |
| Level 40 | 2(1.90) | 3(2.18) | 4(3.17) | 10:01 | 5.8 |
| Level 45 | 2(1.85) | 3(2.12) | 4(3.01) | 9:44 | 5.8 |
| Level 50 | 2(1.79) | 3(2.03) | 3(2.94) | 9:20 | 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.
2 trainers at level 40
- Zacian (Crowned Sword)1.90
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
3 trainers at level 40
- Zacian (Crowned Sword)1.90
- Zamazenta (Crowned Shield)1.94
- Necrozma (Dusk Mane)2.03
- Keldeo2.18
- Lucario2.46
- Terrakion2.56
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
4 trainers at level 40
- Conkeldurr2.97
- Dialga3.06
- Dialga (Origin)3.08
- Kyurem (White)3.12
- Marshadow3.17
- Machamp3.22
The party these numbers assume
See the full ranked counter list for Hisuian Avalugg · 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.