Group size estimator
How many trainers do I need to invite?
Invite 5 to be safe — 4 if everyone is prepared
- Boss CP
- 61,919
- 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(4.71) | 6(5.65) | 8(7.18) | 26:01 | 6.0 |
| Level 25 | 4(3.99) | 5(4.82) | 6(5.72) | 22:11 | 6.0 |
| Level 30 | 4(3.33) | 5(4.15) | 5(4.97) | 19:06 | 6.0 |
| Level 35 | 4(3.20) | 4(3.93) | 5(4.70) | 18:05 | 6.0 |
| Level 40 | 4(3.06) | 4(3.70) | 5(4.43) | 17:00 | 6.0 |
| Level 45 | 3(2.81) | 4(3.55) | 5(4.28) | 16:21 | 6.0 |
| Level 50 | 3(2.73) | 4(3.43) | 5(4.14) | 15:48 | 6.0 |
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
- Keldeo3.06
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
4 trainers at level 40
- Keldeo3.06
- Zacian (Crowned Sword)3.72
- Kartana3.78
- Lucario3.77
- Terrakion3.87
- Eternatus3.98
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
5 trainers at level 40
- Gallade4.30
- Raikou4.33
- Togekiss4.42
- Volcarona4.34
- Marshadow4.40
- Tapu Bulu4.40
The party these numbers assume
See the full ranked counter list for Darkrai · 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.