Group size estimator

How many trainers do I need to invite?

The Estimator is already "trainers of this attacker needed to finish inside the timer", so this page does not invent a number: it reads it off the boss's own ranked counter list for three realistic parties and re-simulates each of them at every level from 20 to 50.

Raid bossTierIVsWeatherFriendshipDodgingShadow attackersMega attackersLegendary attackers

Invite 2 to be safe — 2 if everyone is prepared

At level 40, a party of Kilowattrel's top six counters needs 1.52 trainers (round up: 2), and a mixed lobby of ranks 13-24 needs 1.93 (round up: 2). The raid timer is 300 seconds and one prepared trainer alone would take 7:00. No level in this range makes it soloable with a prepared party. A duo works from level 25.

Kilowattrel · Tier 5

electricflying

Weak to

rockice

Boss CP: 35,044
Boss HP: 15,000
Raid timer: 300s
Party used: 6

Trainers needed, by attacker level

Scroll sideways for the mixed-lobby column.

Trainers needed to beat Kilowattrel at each attacker level
Attacker level	Six of the best counter	A prepared party	A mixed local group	Prepared solo time	Faints per timer
Level 20	2(1.77)	3(2.18)	3(2.83)	10:03	6.0
Level 25	2(1.54)	2(1.88)	3(2.41)	8:39	6.0
Level 30	2(1.33)	2(1.65)	3(2.17)	7:37	5.9
Level 35	2(1.27)	2(1.59)	3(2.03)	7:20	5.9
Level 40	2(1.22)	2(1.52)	2(1.93)	7:00	5.9
Level 45	2(1.18)	2(1.46)	2(1.87)	6:43	5.8
Level 50	2(1.14)	2(1.41)	2(1.81)	6:30	5.8

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

Kyurem (White)1.22

A prepared party

Each trainer brings the boss's top six counters, powered up and correctly TM'd.

2 trainers at level 40

Kyurem (White)1.22
Kyurem (Black)1.36
Eternatus1.60
Glimmora1.62
Rampardos1.62
Rhyperior1.70

A mixed local group

Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.

2 trainers at level 40

Terrakion1.80
Regigigas1.85
Kyurem1.86
Tyranitar1.88
Glaceon1.93
Weavile1.93

The party these numbers assume

1. Kyurem (White)

Ice Fang + Ice Burn

2. Kyurem (Black)

Dragon Tail + Freeze Shock

3. Eternatus

Poison Jab + Dynamax Cannon

4. Glimmora

Rock Throw + Meteor Beam

5. Rampardos

Smack Down + Rock Slide

6. Rhyperior

Smack Down + Rock Wrecker

See the full ranked counter list for Kilowattrel · 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.