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 3 to be safe — 2 if everyone is prepared

At level 40, a party of Iron Hands's top six counters needs 1.83 trainers (round up: 2), and a mixed lobby of ranks 13-24 needs 2.18 (round up: 3). The raid timer is 300 seconds and one prepared trainer alone would take 8:25. No level in this range makes it soloable with a prepared party. A duo works from level 30.

Iron Hands · Tier 5

fightingelectric

Weak to

groundpsychicfairy

Boss CP: 44,123
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 Iron Hands 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	3(2.29)	3(2.53)	3(2.95)	11:38	5.2
Level 25	2(1.99)	3(2.21)	3(2.62)	10:09	4.9
Level 30	2(1.83)	2(2.00)	3(2.35)	9:12	4.5
Level 35	2(1.71)	2(1.91)	3(2.27)	8:48	4.3
Level 40	2(1.66)	2(1.83)	3(2.18)	8:25	4.0
Level 45	2(1.62)	2(1.77)	3(2.09)	8:08	3.8
Level 50	2(1.57)	2(1.72)	3(2.03)	7:56	3.6

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

Mewtwo1.66

A prepared party

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

2 trainers at level 40

Mewtwo1.66
Hoopa (Unbound)1.76
Landorus (Therian)1.77
Tapu Lele1.86
Necrozma (Dawn Wings)1.92
Hoopa2.00

A mixed local group

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

3 trainers at level 40

Zacian (Crowned Sword)2.09
Eternatus2.10
Latios2.10
Azelf2.15
Necrozma (Dusk Mane)2.15
Excadrill2.19

The party these numbers assume

1. Mewtwo

Psycho Cut + Psystrike

2. Hoopa (Unbound)

Confusion + Psychic

3. Landorus (Therian)

Mud Shot + Sandsear Storm

4. Tapu Lele

Confusion + Nature's Madness

5. Necrozma (Dawn Wings)

Psycho Cut + Moongeist Beam

6. Hoopa

Confusion + Psychic

See the full ranked counter list for Iron Hands · 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.