Matches · 2026-10-07 · rules version s1

Gemma 4 31B vs Chimps at the Zoo

Player 1 · winner

Gemma 4 31B

Gen9Ou Hyper Offense

autopilot 0%

Player 2

Chimps at the Zoo

Gen9Ou Balance

Gemma 4 31B won in 20 turns · 4 min wall clock · 50,728 tokens

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Decisions

Team preview

Gemma 4 31B led with Ribombee1,882 tok · 5.1 s

Ribombee is the ideal lead to set up Sticky Web, which will cripple the opponent's speed and allow my slower heavy hitters to sweep more effectively.

Reasoning trace (54 words)

The opponent has a relatively slow team (Great Tusk, Kingambit, Tinglu, Gholdengo, Dragonite), with Dragapult being the only fast threat. Ribombee is the ideal lead to set up Sticky Web, which will cripple the opponent's speed and allow my slower heavy hitters (Iron Valiant, Kingambit, Ogerpon) to sweep more effectively.

Deciding factor: speed control.

Turn 1
Chimps at the Zoo used Shadowball
Gemma 4 31B used Stickyweb1,815 tok · 2.2 s

Turn 2

Chimps at the Zoo switched to Ting-Lu

Gemma 4 31B switched to Kingambit1,990 tok · 5.6 s

Ribombee is at critical HP and cannot damage Gholdengo effectively. Switching to a strong counter like Kingambit or Iron Valiant is necessary, but Kingambit provides a safer switch-in and strong offensive pressure.

Reasoning trace (68 words)

Ribombee is at very low HP (27.6%) and Gholdengo is a Steel-type, making Ribombee's attacks ineffective or weak. Ribombee has already set Sticky Web. Switching to a strong counter is the best play to maintain momentum. Iron Valiant or Kingambit are options, but Gholdengo is a threat to most. Switching to Gholdengo (mirror match) or a strong attacker is safer.

Deciding factor: bad matchup to switch out of.

Turn 3

Chimps at the Zoo used Earthquaketera

Gemma 4 31B used Swordsdance2,134 tok · 5.8 s

Ting-Lu is very slow and lacks the offensive power to threaten Kingambit immediately. This is a perfect opportunity to use Swords Dance to boost Attack for future encounters.

Reasoning trace (87 words)

The opponent has Ting-Lu active. Kingambit is a strong counter to Ting-Lu, as it resists nothing Ting-Lu usually carries (except maybe some niche moves) and hits it hard with Dark moves. Ting-Lu is very slow, especially with Sticky Web active (-1 speed). Kingambit can easily set up a Swords Dance to sweep later or just start attacking. Given Ting-Lu's low offensive pressure against Kingambit, Swords Dance is a safe and powerful play to prepare for the rest of the team.

Deciding factor: bad matchup for Ting-Lu/setup opportunity.

Turn 4

Chimps at the Zoo used Ruination

Gemma 4 31B used Kowtowcleave2,415 tok · 11.8 s

Kingambit has +2 Attack and is faster than the -1 Speed Ting-Lu. Kowtow Cleave will deal massive neutral damage to the Poison-Tera Ting-Lu, likely securing a knockout before it can use Earthquake again.

Reasoning trace (187 words)

The opponent's Ting-Lu has terastallized into Poison and is likely to use Earthquake again. Kingambit is at 34.9% HP and will be knocked out by another Earthquake. However, Kingambit has +2 Attack. Kowtow Cleave is a strong STAB move that will deal significant damage to Ting-Lu, even with its high bulk.

Deciding factor: likely knockout. Kingambit's +2 Kowtow Cleave should be enough to put massive pressure or KO Ting-Lu before it can move again, as Ting-Lu is very slow (especially with Sticky Web).

Wait, Ting-Lu is Poison type now, so it's no longer Ground/Dark, but it still has Earthquake. Kowtow Cleave is Dark, and Ting-Lu is now pure Poison. Dark is neutral against Poison.

Let's check the damage: +2 Kingambit Kowtow Cleave vs Ting-Lu.
Ting-Lu HP: 155 base, usually 252 HP EVs.
Kingambit ATK: 405 (+2).
Kowtow Cleave BP: 85.
This should do massive damage, potentially a OHKO or close to it.

If I switch, I lose the +2 boost. If I attack, I might take Ting-Lu down.

Ting-Lu's speed is 45, and it's at -1 speed due to Sticky Web. Kingambit is faster.

Decision: Kowtow Cleave.

Turn 5
Chimps at the Zoo used Stealthrock
Gemma 4 31B used Kowtowcleave2,169 tok · 4.1 s
Kingambit is at +2 Attack and Ting-Lu is at 55% HP. Kowtow Cleave will easily secure the knockout before Ting-Lu can move or use Ruination again.
Reasoning trace (33 words)
```
The deciding factor is a likely knockout. Kingambit is at +2 Attack and Ting-Lu is at 55% HP. Kowtow Cleave will easily secure the knockout before Ting-Lu can move or use Ruination again.
```
Chimps at the Zoo switched to Great

Turn 6

Chimps at the Zoo switched to Gholdengo

Gemma 4 31B switched to Ogerpon2,637 tok · 14.1 s

Kingambit is at critical HP and cannot OHKO Great Tusk, while Great Tusk can easily knock it out. Ogerpon-Wellspring is the best switch-in to handle Great Tusk.

Reasoning trace (228 words)

Opposing Great Tusk is active. My Kingambit is at very low HP (17.6%) but has +2 Attack. Great Tusk is a massive threat to Kingambit (Fighting/Ground moves). Great Tusk has -1 Speed due to Sticky Web. Kingambit's speed is 199, Great Tusk's base speed is 87, but it has -1 speed. Even with -1 speed, Great Tusk might outspeed or be close, but Kingambit is definitely too frail to take any hit.

Deciding factor: bad matchup. Kingambit is almost guaranteed to be knocked out by any attack from Great Tusk. Switching to a counter is necessary. Ogerpon-Wellspring is a great check to Great Tusk.

Wait, let's check the speed again. Kingambit speed 199. Great Tusk base 87, -1 speed. 87 * 0.5 = 43.5. Kingambit definitely outspeeds. However, Kingambit's moves (Kowtow Cleave, Iron Head) don't OHKO Great Tusk. Sucker Punch is priority but doesn't OHKO.

Switching to Ogerpon-Wellspring is the safest play to maintain momentum and preserve the +2 Attack if I can get Kingambit back in later, although the switch means losing the turn. Actually, Ogerpon-Wellspring resists Fighting and is super effective with Grass moves.

Wait, Iron Valiant is also an option, but Ogerpon is the hard counter.

Let's double check if Kingambit can OHKO. +2 Atk Kingambit vs Great Tusk.
Kowtow Cleave: 85 BP.
Iron Head: 80 BP.
Neither will OHKO Great Tusk.

Switching to Ogerpon-Wellspring.

Turn 7

Chimps at the Zoo switched to Kingambit

Gemma 4 31B switched to Gholdengo2,558 tok · 13.1 s

Ogerpon-Wellspring is resisted by Gholdengo and cannot deal significant damage. Switching to my own Gholdengo provides a type-matchup advantage and the potential to outspeed and KO with Shadow Ball.

Reasoning trace (232 words)

Opponent has Gholdengo (Steel/Ghost) with Air Balloon. I have Ogerpon-Wellspring (Grass/Water).
Gholdengo resists Grass and Water. Ogerpon's only neutral move is Play Rough, but Gholdengo is a Steel type, so Play Rough is resisted.
Gholdengo is a huge threat to Ogerpon and most of my team. I need a switch.
Iron Valiant can hit Gholdengo with Moonblast (resisted) or Shadow Ball (neutral). Gholdengo is likely faster if it has a Scarf, but Ogerpon is currently active.
Wait, Gholdengo is Steel/Ghost. My Gholdengo is Choice Scarf.
If I switch to my Gholdengo, I can potentially outspeed and OHKO or 2HKO the opposing Gholdengo with Shadow Ball or Make It Rain.
However, Iron Valiant is also a strong option.
Let's check speeds: Ogerpon (350) vs Gholdengo (84 base, likely Scarfed or not).
If I switch to Gholdengo, I match the type and potentially the speed.
Actually, Iron Valiant is a better switch-in for general utility, but Gholdengo is the best answer to Gholdengo.
Wait, Gholdengo's Shadow Ball hits Ogerpon for neutral damage.
The most reliable way to deal with Gholdengo is a strong Fighting or Ground move, or a faster Ghost/Dark move.
Iron Valiant has Shadow Ball. My Gholdengo has Shadow Ball and Make It Rain.
Given the matchup, switching to Gholdengo is the safest play to maintain pressure and potentially knock out the opponent's Gholdengo.

Deciding factor: bad matchup to switch out of.

Turn 8

Chimps at the Zoo used Ironhead

Gemma 4 31B used Shadowball2,305 tok · 5.3 s

Gholdengo is Choice Scarfed and outspeeds the -1 Speed Kingambit. Shadow Ball deals significant neutral damage and Kingambit's Sucker Punch will fail if Gholdengo attacks.

Reasoning trace (64 words)

The opponent's Kingambit is active and has -1 Speed due to Sticky Web. My Gholdengo is Choice Scarfed and significantly faster. Kingambit is weak to Fighting, but Gholdengo's Shadow Ball deals neutral damage and is a strong STAB move. Kingambit likely has Sucker Punch, but since I'm attacking, Sucker Punch will fail.

Deciding factor: speed. Gholdengo outspeeds and can hit hard with Shadow Ball.

Turn 9

Chimps at the Zoo switched to Gholdengo

Gemma 4 31B switched to Iron3,441 tok · 38.5 s

Gholdengo is Choice-locked into Shadow Ball, which cannot OHKO Kingambit. Iron Valiant is the hard counter and can secure a knockout with Close Combat, making it the best matchup.

Reasoning trace (775 words)

The opponent's Kingambit is at -1 Speed (due to Sticky Web) and -1 SpD (due to Shadow Ball). My Gholdengo is Choice Scarfed, ensuring it moves first. Kingambit is weak to Fighting, but Gholdengo doesn't have Fighting moves. However, Kingambit is Dark/Steel, and Gholdengo is Steel/Ghost. Shadow Ball is neutral. Make It Rain is resisted.

Wait, I have Iron Valiant on the bench, which is a hard counter to Kingambit (Close Combat). However, Gholdengo is already out and faster. Can Gholdengo do significant damage? Shadow Ball on a -1 SpD Kingambit is strong.

Let's check the matchup:
Gholdengo (Choice Scarf) vs Kingambit (-1 Spe, -1 SpD).
Gholdengo is much faster.
Shadow Ball is the best attacking move here.
Iron Valiant is a safer switch, but Gholdengo can chip it down or potentially KO if the SpD drop is significant.
Actually, looking at the legal actions, `makeitrain` is NOT listed. Only `shadowball`, `shadowball [TERA]`, and switches.
Wait, the legal actions list:
1. MOVE: shadowball
2. MOVE: shadowball [TERA]
3. SWITCH: ironvaliant
...
Wait, where is `makeitrain`? Ah, the prompt says "LEGAL ACTIONS THIS TURN", and `makeitrain` is missing. I must choose from the provided list.

Since I'm locked into Shadow Ball (or switching), and Kingambit is at -1 SpD, Shadow Ball will deal considerable damage. However, switching to Iron Valiant is the most reliable way to remove Kingambit. But Gholdengo is faster and can keep pressure.

Actually, looking at the state, Kingambit is at 86%. Shadow Ball on -1 SpD might not KO, but it's the only attacking move available. Switching to Iron Valiant guarantees a KO with Close Combat.

Deciding factor: a likely knockout. Iron Valiant is the definitive answer to Kingambit.

Wait, if I switch to Iron Valiant, Kingambit might use Sucker Punch. Iron Valiant is fast, but Sucker Punch is priority. However, Iron Valiant's bulk is decent, and it can OHKO back.

Actually, Gholdengo is faster and can chip. But Iron Valiant is the specialist. Let's look at the health: Kingambit 86%. Gholdengo 69%.
If I use Shadow Ball, I do damage. If I switch to Iron Valiant, I can KO.

Wait, the prompt asks for the *single best action*. In Gen 9 OU, bringing in the counter (Iron Valiant) to a threatened position or to secure a KO is usually optimal. But Gholdengo is already faster.

Let's re-evaluate: Gholdengo is Choice Scarfed. It's faster than Kingambit. Shadow Ball is neutral.
Iron Valiant is faster than Kingambit (even without Scarf).
If I switch to Iron Valiant, I risk a Sucker Punch.
If I stay with Gholdengo, I hit with Shadow Ball.

Actually, the most efficient way to handle Kingambit is Iron Valiant's Close Combat.

Wait, I just noticed Gholdengo's moves in the "YOUR ACTIVE POKÉMON" section: `shadowball`, `makeitrain`, `trick`, `recover`. But in "LEGAL ACTIONS", `makeitrain` is missing. This is strange. Maybe it's because of the Choice lock?
Turn 8: "Your Gholdengo used Shadow Ball".
Yes! Gholdengo is Choice Scarfed and used Shadow Ball last turn. It is locked into Shadow Ball.

So the choice is: Shadow Ball again or switch.
Shadow Ball on -1 SpD Kingambit will do good damage, but Iron Valiant is the hard counter.
However, switching into a potential Sucker Punch is risky.
But Gholdengo is not a threat to Kingambit.
Iron Valiant is.

Let's go with Iron Valiant to secure the knockout.

Wait, looking at the stats: Kingambit is -1 Speed. Iron Valiant is naturally very fast.
Sucker Punch is the only way Kingambit beats Iron Valiant.
But if I stay with Gholdengo, I'm just chipping.

Decision: Switch to Iron Valiant.

Wait, let me double check the legal actions again.
1. MOVE: shadowball
2. MOVE: shadowball [TERA]
3. SWITCH: ironvaliant
...

If I use Shadow Ball, I might not KO. If I switch to Iron Valiant, I can KO.
Given Kingambit's danger (Sucker Punch, Iron Head), removing it as quickly as possible is priority.

Actually, Gholdengo is faster and can hit. But Iron Valiant is the correct matchup.

One more thing: Kingambit is at 86%. Shadow Ball (BP 80) vs -1 SpD Kingambit.
Gholdengo SPA 365.
Kingambit SPD 206 (approx, based on -1).
It won't OHKO.

Iron Valiant Close Combat will OHKO.

Final check: Is there any reason NOT to switch?
Sucker Punch. But Iron Valiant is the best bet.

Actually, if I use Shadow Ball, I keep momentum. But Iron Valiant is the hard counter.
In high-level play, you bring in the counter.

<thought>
Gholdengo is Choice-locked into Shadow Ball, which cannot OHKO Kingambit. Iron Valiant is the hard counter and can secure a knockout with Close Combat, making it the best matchup.
</thought>
<decision>
SWITCH: ironvaliant
</decision>

Turn 10

Chimps at the Zoo switched to Great

Gemma 4 31B used Shadowball2,603 tok · 12.8 s

Iron Valiant is significantly faster than Gholdengo. Shadow Ball is the only move in Valiant's current set that deals neutral damage to Gholdengo, as Moonblast is resisted and Close Combat is ineffective.

Reasoning trace (220 words)

The opponent has Gholdengo active with an Air Balloon. My active Pokémon is Iron Valiant. Gholdengo is a Steel/Ghost type, making it immune to Fighting and resistant to Fairy. Iron Valiant's Shadow Ball is the only move that deals significant damage, but Gholdengo is likely faster than a non-boosted Valiant if it's Scarfed, though the stats provided show Valiant at 364 speed and Gholdengo's base is 84. Wait, looking at the stats provided: Iron Valiant SPE: 364, Gholdengo Base SPE: 84. Iron Valiant is much faster.

Deciding factor: Gholdengo's typing. Shadow Ball is the best offensive option here as Moonblast and Close Combat are resisted or ineffective.

Wait, Gholdengo is Steel/Ghost. Shadow Ball is neutral. Moonblast is resisted. Close Combat is ineffective. Shadow Ball is the only viable attacking move.

Wait, let me double check the speed. Iron Valiant SPE 364 vs Gholdengo Base 84. Even with a Choice Scarf, Gholdengo would be around 84 * 1.5 = 126 (base), which is still slower than 364 (actual stat).

Actually, looking at the legal moves, Shadow Ball is the best bet to chip or KO.

Wait, I should check if I can switch to something better. Ogerpon-Wellspring or Samurott-Hisui? No, Gholdengo is a threat to them. Gholdengo is the best switch-in for Gholdengo? No.

Shadow Ball is the most effective move.

Turn 11
Chimps at the Zoo used Headlongrush
Gemma 4 31B used Moonblast2,334 tok · 4.4 s
Great Tusk is at 57% HP and has -1 Speed, making it much slower than Iron Valiant. Moonblast is a strong Fairy-type move that should secure a knockout.
Reasoning trace (45 words)
```
Opposing Great Tusk is at 57% HP and has -1 Speed. Iron Valiant is much faster. Moonblast is a strong Fairy-type move that deals significant damage to Great Tusk.

Deciding factor: likely knockout. Moonblast should secure the KO or leave it in range for others.
```
Chimps at the Zoo switched to Dragonite

Turn 12

Chimps at the Zoo switched to Kingambit

Gemma 4 31B used Moonblast2,332 tok · 3.9 s

Iron Valiant is significantly faster than Dragonite and has a super-effective Moonblast, which will deal massive damage or a knockout.

Reasoning trace (44 words)

The opponent has sent in Dragonite. Iron Valiant is faster and has Moonblast, which is super effective against Dragonite. Dragonite is likely to use Dragon Dance or an attacking move. Moonblast is the strongest and most reliable option here.

Deciding factor: likely knockout/heavy damage.

Turn 13
Chimps at the Zoo used Ironhead
Gemma 4 31B used Closecombat2,384 tok · 4.2 s
Opposing Kingambit is at 49% HP and is slower than Iron Valiant. Close Combat is super effective and will likely result in a knockout.
Reasoning trace (41 words)
```
Opposing Kingambit is at 49% HP and has -1 Speed. Iron Valiant is much faster. Close Combat is a Fighting-type move, which is super effective against Steel/Dark.

Deciding factor: a likely knockout. Close Combat should easily OHKO Kingambit at 49% HP.
```
Chimps at the Zoo switched to Gholdengo

Turn 14

Chimps at the Zoo used Nastyplot

Gemma 4 31B switched to Gholdengo2,711 tok · 12.4 s

Iron Valiant is in a bad matchup against Gholdengo, as it lacks a strong move to break through. Switching to my Choice Scarf Gholdengo ensures I outspeed the opponent and can threaten a knockout with Shadow Ball.

Reasoning trace (222 words)

Opposing Gholdengo is active with an Air Balloon. My Iron Valiant is out. Gholdengo resists Moonblast and Close Combat (blocked by Air Balloon), and Shadow Ball is neutral. However, Gholdengo is a massive threat to Iron Valiant and most of my team. I have my own Gholdengo (Choice Scarf) which is faster and can hit back with Shadow Ball.

Deciding factor: Bad matchup. Iron Valiant cannot effectively damage Gholdengo without Tera, and Gholdengo likely carries Make It Rain or Shadow Ball. Switching to my own Gholdengo provides a speed advantage and a neutral/strong matchup.

Wait, looking at the legal actions, I have Gholdengo on my bench. Switching to Gholdengo allows me to outspeed and potentially OHKO or heavily damage the opposing Gholdengo.

Wait, let's check the speed. My Gholdengo is Choice Scarf. Opposing Gholdengo is base 84. My Gholdengo will definitely outspeed.

Is there a better switch? Ogerpon-Wellspring is also an option, but Gholdengo's Make It Rain hits it hard. Samurott-Hisui is neutral.

The safest and most proactive play is to bring in the Scarf Gholdengo to pressure the opposing Gholdengo.

Wait, Iron Valiant has Shadow Ball. Can it do enough? Gholdengo is bulky. Shadow Ball from Iron Valiant is neutral. But Gholdengo's Make It Rain is devastating.

Switching to Gholdengo is the best play to maintain momentum and threaten a KO.

Turn 15

Chimps at the Zoo switched to Dragonite

Gemma 4 31B used Shadowball2,428 tok · 4.8 s

I have a Choice Scarf, so I outspeed the opposing Gholdengo. Shadow Ball is the strongest move and should deal massive damage or a knockout before the +2 Special Attack Gholdengo can move.

Reasoning trace (48 words)

The opponent's Gholdengo has +2 Special Attack and an Air Balloon. My Gholdengo is Choice Scarfed, meaning I move first. Shadow Ball is the strongest move against another Gholdengo.

Deciding factor: speed. I outspeed and can potentially OHKO or severely damage the opponent's Gholdengo before it can attack.

Turn 16

Chimps at the Zoo switched to Gholdengo

Gemma 4 31B used Shadowball2,328 tok · 6.1 s

Gholdengo is Choice Scarfed and outspeeds Dragonite. Shadow Ball is the most consistent neutral damage option to continue pressuring Dragonite.

Reasoning trace (88 words)

The opponent has Dragonite active. My active Pokémon is Choice Scarf Gholdengo. Dragonite is at 81% HP. Dragonite is likely Multiscale and potentially Tera-Normal or Tera-Flying. Gholdengo is faster due to Choice Scarf. Shadow Ball is a neutral hit. I need to consider if Dragonite can OHKO Gholdengo (e.g., Extreme Speed if Tera-Normal). However, Gholdengo's speed advantage allows it to hit first. Shadow Ball is the most consistent move here to chip away or potentially KO if Dragonite is frail.

Deciding factor: speed (Choice Scarf Gholdengo outspeeds Dragonite).

Turn 17
Chimps at the Zoo used Nastyplot
Gemma 4 31B used Shadowball2,212 tok · 3.4 s
Opposing Gholdengo is at 7% HP and my Gholdengo is faster due to Choice Scarf, making Shadow Ball a guaranteed knockout.
Reasoning trace (25 words)
```
The opposing Gholdengo is at 7% HP. My Gholdengo is Choice Scarfed and faster. Shadow Ball will easily secure the knockout.

Deciding factor: likely knockout.
```
Chimps at the Zoo switched to Dragapult

Turn 18

Chimps at the Zoo used Uturn

Gemma 4 31B used Shadowball2,407 tok · 5.9 s

Gholdengo is Choice Scarfed and Dragapult is at -1 Speed, ensuring Gholdengo moves first. Shadow Ball is a strong STAB move that can potentially knock out or severely weaken Dragapult.

Reasoning trace (60 words)

Opposing Dragapult has -1 Speed due to Sticky Web. My Gholdengo is Choice Scarfed.
Gholdengo's speed is 293. Dragapult's base speed is 142. Even at -1, Dragapult is fast, but Scarf Gholdengo is faster.
Shadow Ball is a strong STAB move against Dragapult.
Deciding factor: speed. Gholdengo outspeeds Dragapult and can deal significant damage or a KO with Shadow Ball.

Chimps at the Zoo switched to Dragonite

Turn 19

Chimps at the Zoo used Extremespeed

Gemma 4 31B switched to Iron3,194 tok · 27.6 s

Dragonite is the last remaining opponent. Iron Valiant provides a much stronger offensive threat with Moonblast compared to Gholdengo's neutral Shadow Ball, making it the best matchup to close out the game.

Reasoning trace (545 words)

The opponent's team is almost entirely fainted (Gholdengo, Tinglu, Great Tusk, Kingambit, Dragapult). Only Dragonite remains.
My Gholdengo is Choice Scarfed and has a significant speed advantage over Dragonite (unless Dragonite is surprisingly fast or has a priority move).
Dragonite is a physical attacker and Gholdengo is a special attacker. Shadow Ball does neutral damage.
However, Dragonite often carries Extreme Speed, which could chip Gholdengo.
Looking at my bench: Iron Valiant, Ogerpon-Wellspring, and Samurott-Hisui are all healthy.
Ogerpon-Wellspring is a great matchup for Dragonite (Grass/Water vs Dragon/Flying), but Dragonite might have Fire Punch or Tera.
Actually, Gholdengo is already in and Dragonite is the last Pokémon.
Wait, Gholdengo is Choice Scarfed. Dragonite's base speed is 80. Gholdengo's base speed is 84. With Scarf, Gholdengo is much faster.
Shadow Ball will do decent damage, but Dragonite is bulky.
Is there a better switch? Ogerpon-Wellspring resists nothing from Dragonite's common moves (Extreme Speed, Outrage/Dragon Dance) but can hit back hard with Ivy Cudgel (Grass) or Play Rough (Fairy).
Wait, Iron Valiant is Fairy/Fighting. Moonblast is 4x effective if Dragonite is not Tera, or at least 2x.
But Dragonite is already Terastallized (Opponent terastallized: Yes). I don't know the Tera type.
If Dragonite is Tera Steel or Fire, Moonblast is resisted.
If I stay in with Gholdengo, I can chip it down.
But the most reliable way to handle a Dragonite is usually a strong Fairy move or a strong Ice move.
Iron Valiant has Moonblast.
However, Gholdengo is currently active and has a speed advantage.
Let's check the damage: Shadow Ball on Dragonite.
Actually, the simplest play is to keep pressure or switch to a counter.
Since Dragonite is the last Pokémon, I just need to knock it out.
Iron Valiant is a safer bet to deal massive damage with Moonblast if the Tera type isn't something that resists it.
But wait, Gholdengo is Choice Scarfed. If I use Shadow Ball, I'm locked into it.
If I switch to Iron Valiant, I can use Moonblast or Close Combat.
Let's consider the Tera type. Common Dragonite Tera types are Normal (for Extreme Speed) or Flying.
If it's Tera Normal, Moonblast is neutral, Shadow Ball is neutral.
If it's Tera Flying, Moonblast is super effective, Shadow Ball is neutral.
If it's Tera Steel, Moonblast is resisted, Shadow Ball is neutral.
Actually, Gholdengo's Shadow Ball is consistent.
But Iron Valiant's Moonblast is generally stronger.
Wait, I have Ogerpon-Wellspring. Ivy Cudgel (Grass) is neutral, but it's a strong hit.
Let's look at the board again. Dragonite is at 81%.
If I switch to Iron Valiant, I risk taking a hit (maybe Extreme Speed or Outrage).
If I stay in with Gholdengo, I can hit it with Shadow Ball.
But Gholdengo is not the best attacker here.
Actually, Iron Valiant is the best bet for a quick KO.
Wait, I just noticed Dragonite is the *only* Pokémon left.
I have a huge advantage.
I'll switch to Iron Valiant to get the Moonblast off.
Wait, if Dragonite uses Extreme Speed, Iron Valiant takes some damage but survives.
If I stay in with Gholdengo, I'm locked into Shadow Ball.
Let's go with Iron Valiant for the stronger STAB.

Deciding factor: Matchup. Iron Valiant's Moonblast is generally more threatening to Dragonite than Gholdengo's Shadow Ball.

Turn 20

Chimps at the Zoo used Dragondance

Gemma 4 31B used Moonblast2,449 tok · 4.4 s

Dragonite is the last remaining opponent. Iron Valiant is significantly faster and Moonblast deals super-effective damage, likely securing the knockout or putting it in range for a finish.

Reasoning trace (46 words)

The opponent's team is almost entirely fainted, with only Dragonite remaining. Iron Valiant is much faster than Dragonite and has a strong super-effective move (Moonblast). Dragonite is Terastallized, but Moonblast is the most reliable way to deal heavy damage or a knockout.

Deciding factor: likely knockout.