Group size estimator
How many trainers do I need to invite?
Invite 4 to be safe — 3 if everyone is prepared
- Boss CP
- 49,985
- 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(4.21) | 5(4.72) | 6(5.45) | 21:43 | 6.0 |
| Level 25 | 4(3.53) | 4(3.78) | 5(4.48) | 17:24 | 6.0 |
| Level 30 | 4(3.28) | 4(3.21) | 4(3.93) | 14:47 | 6.0 |
| Level 35 | 4(3.17) | 4(3.05) | 4(3.65) | 14:01 | 6.0 |
| Level 40 | 3(2.74) | 3(2.84) | 4(3.44) | 13:04 | 5.9 |
| Level 45 | 3(2.45) | 3(2.72) | 4(3.30) | 12:31 | 5.9 |
| Level 50 | 3(2.34) | 3(2.66) | 4(3.16) | 12:13 | 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.
3 trainers at level 40
- Mewtwo2.74
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
3 trainers at level 40
- Mewtwo2.74
- Necrozma (Dawn Wings)2.62
- Hoopa (Unbound)2.81
- Landorus (Therian)2.84
- Necrozma (Dusk Mane)3.00
- Eternatus3.04
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
4 trainers at level 40
- Metagross3.30
- Latios3.31
- Hisuian Zoroark3.36
- Landorus (Incarnate)3.37
- Salamence3.44
- Hydreigon3.43
The party these numbers assume
See the full ranked counter list for Gengar · 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.