Group size estimator
How many trainers do I need to invite?
Invite 3 to be safe — 3 if everyone is prepared
- Boss CP
- 20,064
- Boss HP
- 15,000
- 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(2.75) | 4(3.24) | 4(3.90) | 15:17 | 5.8 |
| Level 25 | 3(2.47) | 3(2.82) | 4(3.39) | 13:20 | 5.6 |
| Level 30 | 3(2.14) | 3(2.53) | 4(3.06) | 11:57 | 5.4 |
| Level 35 | 3(2.08) | 3(2.44) | 3(2.88) | 11:31 | 5.3 |
| Level 40 | 3(2.00) | 3(2.29) | 3(2.75) | 10:48 | 5.3 |
| Level 45 | 2(1.95) | 3(2.24) | 3(2.65) | 10:35 | 5.2 |
| Level 50 | 2(1.85) | 3(2.17) | 3(2.56) | 10:15 | 5.2 |
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
- Kyurem (White)2.00
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
3 trainers at level 40
- Kyurem (White)2.00
- Kyurem (Black)2.16
- Kartana2.24
- Shaymin (Sky)2.41
- Inteleon2.42
- Zarude2.48
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
3 trainers at level 40
- Galarian Darmanitan (Standard)2.70
- Quaquaval2.70
- Primarina2.73
- Roserade2.75
- Kingler2.74
- Meowscarada2.75
The party these numbers assume
See the full ranked counter list for Sandshrew · 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.