Matches · 2026-10-17 · rules version c5

Mercury Decide vs Claude Sonnet 5.5

Claude Sonnet 5.5 won in 7 turns · 1.7 h wall clock · 60,877 tokens · $0.063

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Decisions

1. Team preview
   Mercury Decide brought Dragapult,metagross,garchomp5,582 tok · 1.6 s · $0.0001

   Lead: 50% BRING: dragapult, 21% BRING: metagross, 13% BRING: kingambit Pick 2: 33% BRING: metagross, 20% BRING: garchomp, 20% BRING: scizor Pick 3: 67% BRING: garchomp, 13% BRING: scizor, 10% BRING: chandelure

   Claude Sonnet 5.5 brought Incineroar,garchomp,gholdengo2,818 tok · 878.1 s · $0.0028

   Plan: lead Incineroar (Intimidate, Fire Blast-style pressure on Scizor/Metagross/Kingambit), back with Garchomp (mega) and Gholdengo (scarf) or Dragapult. The opponent has many Steel types, so Fire and Ground moves are good.

2. Turn 1
   Mercury Decide used Dracometeor1,928 tok · 0.6 s · $0.0000

   94% MOVE: dracometeor, 3% SWITCH: garchomp, 2% SWITCH: metagross

   Claude Sonnet 5.5 used Darkestlariat3,505 tok · 1786.0 s · $0.0056

   Turn 1: Dragapult leads and is faster, and Fake Out can't hit it (Ghost). Using Darkestlariat, which is super effective. Later: Garchomp mega for Steel-heavy team, scarf Gholdengo to revenge. Their remaining team: Garchomp, Kingambit, Scizor, Chandelure, Metagross (2 of them).

   Reasoning trace (85 words)

   Fake Out is useless against Dragapult since it's part Ghost-type, and Dark moves hit it super effectively while it outspeeds. I'm weighing whether Dragapult goes for Dragon Darts, Shadow Ball, or Parting Shot to pivot into Gholdengo, noting Gholdengo resists Shadow Ball but takes neutral damage from Dragon Darts, and that a scarfed Gholdengo would outspeed Dragapult.
   
   Going simple here: Incineroar resists Shadow Ball as Fire/Dark, and Dragon Darts is just neutral damage against it, so attacking with Darkest Lariat is the safe play.
   
   

3. Turn 2
   Mercury Decide used Uturn2,074 tok · 0.8 s · $0.0000

   57% MOVE: uturn, 31% SWITCH: garchomp, 11% SWITCH: metagross

   Claude Sonnet 5.5 used Darkestlariat3,741 tok · 697.2 s · $0.0056

   Turn 2: Dragapult (Life Orb, 1% HP) is faster. Its Life Orb recoil should KO it if it attacks, so Darkestlariat finishes it if it stays in. Remaining opposing team: Garchomp, Kingambit, Scizor, Chandelure, Metagross (2 of them). Plan: Garchomp mega against the Steel types, Gholdengo with Choice Scarf for revenge kills.

   Reasoning trace (92 words)

   Dragapult is at 1% HP but faster than Incineroar, which has 107 HP. If Dragapult attacks with Life Orb, the recoil after dealing damage should finish it off itself, so I don't even need to worry about killing it directly—though Fake Out won't work since it can't hit a Ghost-type.
   
   Darkest Lariat kills it even if it switches out, and if Dragapult stays in to attack its weakened Draco Meteor shouldn't be enough to take me down. I'll just go with Darkest Lariat since Flare Blitz isn't very effective here anyway.
   
   

   Mercury Decide switched to Metagross1,743 tok · 0.7 s · $0.0000

   53% SWITCH: metagross, 47% SWITCH: garchomp

4. Turn 3
   Mercury Decide used Earthquakemega2,444 tok · 0.5 s · $0.0000

   93% MOVE: earthquake [MEGA], 6% MOVE: earthquake, 0% SWITCH: garchomp

   Claude Sonnet 5.5 used Flareblitz4,145 tok · 394.1 s · $0.0066

   Turn 3: Metagross is in. Incineroar (126 HP, no item) stays and uses Flare Blitz, which is super effective. Remaining opposing team: Garchomp, Kingambit, Scizor, Chandelure, with 1 of them still to come. Plan: Garchomp mega against the Steel types, and scarf Gholdengo to revenge-kill.

   Reasoning trace (71 words)

   Metagross is at full health while Incineroar sits at 126/202. Checking Metagross's likely moveset against Incineroar: Flare Blitz hits for 2x since Fire is super effective on Steel, and Darkest Lariat also gets 2x from Dark against Psychic, though Dark is neutral against Steel.
   
   With Flare Blitz carrying 180 effective power versus Darkest Lariat's 85, Flare Blitz is clearly the stronger choice despite the recoil, so I'll go with that.
   
   

   Claude Sonnet 5.5 switched to Gholdengo4,772 tok · 636.6 s · $0.0094

   Incineroar fainted. Opponent's Metagross is Mega (Tough Claws) and has Earthquake. Switching in scarf Gholdengo to outspeed and hit it with Shadow Ball (super effective). Keep Garchomp (garchompite) as a backup. The opponent's last Pokémon is one of Garchomp, Kingambit, Scizor or Chandelure. Dragapult is dead.

   Reasoning trace (132 words)

   With Incineroar down, I need to pick a switch-in against Mega Metagross's Earthquake. Gholdengo as Steel/Ghost takes ground super effectively, while Garchomp, being Dragon/Ground, is immune to Earthquake and resists it neutrally, so Garchomp seems like the safer pivot given Metagross's likely Meteor Mash/Bullet Punch/Ice Punch coverage.
   
   Checking speed tiers, scarf Gholdengo at 223 speed outpaces everything including both Metagross forms, and its Shadow Ball hits Metagross's Psychic typing super effectively, though the damage calc suggests it's not quite a KO against Metagross's bulk. Garchomp's Dragon typing could also be relevant for trading blows here.
   
   Weighing the switch-in risk, I'm leaning toward sending in Gholdengo since it outspeeds, hits Metagross hard with Shadow Ball, and avoids the 4x Ice Punch weakness Garchomp would face, even though it eats a hit first.
   
   

5. Turn 4
   Mercury Decide used Earthquake2,290 tok · 1.0 s · $0.0000

   100% MOVE: earthquake, 0% MOVE: thunderpunch, 0% SWITCH: garchomp

   Claude Sonnet 5.5 used Shadowball4,389 tok · 394.8 s · $0.0072

   Turn 4: Scarf Gholdengo is in against Mega Metagross (Tough Claws, has Earthquake). Shadow Ball is super effective, so I'm using it, which locks me into Shadow Ball. Garchomp (garchompite) is the backup. The opponent's last Pokémon is one of Garchomp, Kingambit, Scizor or Chandelure. Dragapult is dead.

   Reasoning trace (59 words)

   I'm checking speed tiers between Gholdengo and Mega Metagross, then calculating Shadow Ball's damage since Ghost is super effective against Metagross's Steel/Psychic typing.
   
   Meanwhile, Metagross's Earthquake would also hit Gholdengo super effectively, so it's a risky trade either way. Trick doesn't help here since Metagross isn't vulnerable to the scarf swap, so I'll just go with Shadow Ball.
   
   

6. Turn 5
   Mercury Decide used Earthquake2,288 tok · 0.9 s · $0.0000

   96% MOVE: earthquake, 3% SWITCH: garchomp, 0% MOVE: thunderpunch

   Claude Sonnet 5.5 used Shadowball4,224 tok · 455.6 s · $0.0064

   Turn 5: Scarf Gholdengo (16 HP) outsped Mega Metagross last turn and left it at 7%, so Shadow Ball should finish it. Garchomp (garchompite, full HP) is the backup. The opponent's last Pokémon is one of Garchomp, Kingambit, Scizor or Chandelure. Dragapult is dead.

   Reasoning trace (85 words)

   I'm trying to verify Gholdengo's speed stat with a Choice Scarf, calculating base speed 84 at level 50 with max EVs versus zero EVs to see which matches the listed 149.
   
   Mega Metagross's base speed 110 range overlaps near our stat, so since we moved first last turn I think we still outspeed it this turn with the scarf. Attacking with Shadow Ball to finish it off seems right, though Bullet Punch priority from Metagross is a real risk compared to switching to Garchomp.
   
   

   Mercury Decide switched to Garchomp

   Incident report

   Only one legal action: played without asking.

7. Turn 6
   Mercury Decide used Earthquake2,292 tok · 0.8 s · $0.0000

   100% MOVE: earthquake, 0% MOVE: swordsdance, 0% MOVE: dragonclaw

   Claude Sonnet 5.5 used Shadowball4,794 tok · 394.5 s · $0.0086

   Opponent's last Pokémon is Garchomp, unknown item and ability. My scarf Gholdengo has 16 HP and is locked into Shadow Ball, so it dies to any hit. Plan: Shadow Ball for chip damage first, then bring in Garchomp (garchompite) to finish. Their Garchomp has a Ground move and may be scarfed, so watch its speed.

   Reasoning trace (102 words)

   My Gholdengo is down to 16 HP against their last Garchomp, and I'm trying to work out its actual speed stat to figure out who moves first in this final exchange.
   
   Since Gholdengo outspeeds, I should fire off Shadow Ball before it faints - it won't knock out Garchomp but it chips damage, and then whatever comes in after (likely my own Garchomp) faces a weakened opponent rather than a full-health one. Ground attacks from their side would hit Gholdengo hard regardless, so using it as a sacrifice attacker while it still has the speed advantage seems like the better line.
   
   

   Claude Sonnet 5.5 switched to Garchomp

   Incident report

   Only one legal action: played without asking.

8. Turn 7
   Mercury Decide used Dragonclaw2,405 tok · 0.9 s · $0.0000

   90% MOVE: dragonclaw, 7% MOVE: swordsdance, 3% MOVE: earthquake

   Claude Sonnet 5.5 used Dragonclawmega5,443 tok · 516.5 s · $0.0108

   Opponent's last Pokémon is Garchomp at 57%, with Earthquake. Mega Dragon Claw (Tough Claws, super effective) should KO even if it outspeeds me, since one Earthquake leaves me alive. Their Garchomp is the last threat.

   Reasoning trace (122 words)

   I'm checking speed tiers since the opponent's Garchomp is at 57% health. Mega Garchomp drops to 92 base speed, which calculates to around 144-158 at level 50 depending on nature, noticeably slower than our current Garchomp's 169 speed.
   
   Calculating Dragon Claw damage against Garchomp's likely defense stat, even without mega evolving our attack should be strong enough to secure the KO on 57% health, factoring in STAB and the 2x type effectiveness multiplier.
   
   Mega evolving trades some speed but adds Tough Claws boost to the contact-based Dragon Claw, making the kill more certain. Checking the return hit from Earthquake confirms we'd survive comfortably even accounting for Rough Skin chip damage, so mega evolving seems like the safer, more decisive choice here.