Opportunist
Created 9/13/2026
Active
Plays nice by default, forgives the occasional betrayal so grudges don't spiral, cuts off anyone who's clearly hostile and quietly tests soft targets to see if they'll let it get away with defecting for good.
Avg score
6.044
Wins
5573
Losses
3959
Win rate
52.9%
Total battles: 10528
Score history
Avg: 6.044
Recent battles
- Opportunist 7.66 vs 7.36 The Generous
- Opportunist 6.2 vs 6.2 tie Tie
- Opportunist 5.16 vs 5.57 OmegaTitForTat
- rollingdabeff 6.93 vs 7.26 Opportunist
- Aura67 5.3 vs 5.24 Opportunist
- Opportunist 6.92 vs 5.24 NexBot V
- goatbotv3.2 5.19 vs 5.61 Opportunist
- DR MUNDO v0.3 5.54 vs 5.32 Opportunist
- Opportunist 5.17 vs 5.3 OmegaTFT
- Opportunist 5.16 vs 5.39 Apex
- Opportunist 6.28 vs 5.73 Agnes-distill-Tachyon-v2
- Opportunist 4.93 vs 5.06 Always Defect
- GenerousTitForTat 7.44 vs 7.93 Opportunist
- Opportunist 5.54 vs 5.26 Test
- copycat 1 vs 8 Opportunist
- tic tacs 5.6 vs 5.66 Opportunist
- Opportunist 6.4 vs 6.33 Královecký kraj
- Opportunist 5.59 vs 5.54 Sigma Bot v2
- cop until 2 defect 5.66 vs 6.01 Opportunist
- FlippityFloppity v3 4.85 vs 4.79 Opportunist
- Opportunist 4.94 vs 5.05 Test2
- Opportunist 6.3 vs 5.74 Tachyon-v1
- Opportunist 8.38 vs 2.69 Always cooperates
- Opportunist 6.38 vs 5.9 Tit for Two Tats
- 2 Tit for Tat (4) 5.45 vs 5.31 Opportunist
- Opportunist 6.81 vs 4.9 Defect Half v2
- Opportunist 5.26 vs 5.19 Tuff9
- Opportunist 7.51 vs 6.89 ApexUltimate v4
- Test 5.42 vs 5.23 Opportunist
- Opportunist 5.33 vs 5.33 Tuff8 Tie
- Smarty Pants V2 5.24 vs 5.36 Opportunist
- Opportunist 4.93 vs 5.04 FirstBot
- Opportunist 6.35 vs 6.28 Tuff8
- Opportunist 6.69 vs 6.69 Tuff9 Tie
- Opportunist 5.8 vs 5.8 Veritasium Tie
- Opportunist 6.66 vs 6.35 IDK Bot
- Opportunist 4.98 vs 5.02 Dev defect def
- Redgux 5.23 vs 5.23 Opportunist Tie
- Opportunist 5.59 vs 5.59 eyk6 Tie
- BestBot TFT Safe 6.65 vs 6.9 Opportunist
- Opportunist 4.97 vs 5.03 Mabey
- Opportunist 4.89 vs 5.07 FirstBot
- Swimmingbot3 5.62 vs 5.88 Opportunist
- AaravC Bot 1 7.04 vs 7.55 Opportunist
- Opportunist 5.69 vs 5.62 tit for tat
- Opportunist 5.22 vs 5.49 Gridger
- Grudger 5.36 vs 5.3 Opportunist
- greedy tic tacs 6.92 vs 6.92 Opportunist Tie
- Smarty Pants V1 5.53 vs 5.27 Opportunist
- Opportunist 5.68 vs 5.38 Pls work!
Source
export default function bot({ history, memory }) {
memory = memory ?? { oppD: 0, confidence: 0, probing: false, nextProbe: 8 }
const round = history.length
if (round === 0) return ["C", memory]
const last = history.at(-1)
if (last.opponent === "D") memory.oppD++
if (memory.probing) {
memory.probing = false
if (last.opponent === "D") {
memory.confidence = 0
memory.nextProbe = round + 20
} else {
memory.confidence++
memory.nextProbe = round + Math.max(2, 6 - memory.confidence)
}
}
if (memory.confidence >= 6) return ["D", memory]
const rate = memory.oppD / round
if (round >= 10 && rate > 0.75) return ["D", memory]
if (last.opponent === "D") {
return [Math.random() < 0.1 ? "C" : "D", memory]
}
if (round >= memory.nextProbe) {
memory.probing = true
return ["D", memory]
}
return ["C", memory]
}