02 — Run · Round 1 · Tokyo 1957: monster attack · sonnet5-tokyo-s2
Claude Sonnet 5 plays Tokyo 1957
A monster attacks Tokyo in 1957. Rebuild and get the city score above 500 within 5 years. Ended Jan 1962: lost, city score 346.
GOAL MISSED seed 2
Claude Sonnet 5
anthropic/claude-sonnet-5
LOST: City score 346 (goal > 500); engine verdict: lost
Population (start → end)113,100 → 22,400
Peak population113,100City score (start → end)500 → 346
Funds at the end$3,888Crime / pollution / traffic20 / 56 / 7
Zones R / C / I132 / 92 / 80
Power plants (coal / nuclear)8 / 0Police / fire stations17 / 4
Turns (model / failed)20 (20 / 0)
Actions applied / rejected88 / 29
Mean turn latency9.0sModel cost$0.377Wall clock3.1 min
Jetty run ID72ed89e1
The city over time
Population
People, after every turn
Funds
Treasury, after every turn
City score
0–1000, re-evaluated each January
Table view
| Turn | Date | Population | Funds | City score | Crime | Pollution |
|---|---|---|---|---|---|---|
| 0 | Jan 1957 | 113,100 | $20,000 | 500 | 31 | 63 |
| 1 | Apr 1957 | 108,620 | $19,980 | 668 | 31 | 63 |
| 2 | Jul 1957 | 104,200 | $19,779 | 668 | 73 | 66 |
| 3 | Oct 1957 | 97,220 | $19,674 | 668 | 81 | 67 |
| 4 | Jan 1958 | 90,100 | $17,841 | 529 | 81 | 67 |
| 5 | Apr 1958 | 83,740 | $16,799 | 529 | 64 | 67 |
| 6 | Jul 1958 | 78,920 | $16,289 | 529 | 55 | 64 |
| 7 | Oct 1958 | 73,960 | $16,227 | 529 | 55 | 64 |
| 8 | Jan 1959 | 69,540 | $13,656 | 437 | 49 | 65 |
| 9 | Apr 1959 | 64,460 | $13,656 | 437 | 46 | 64 |
| 10 | Jul 1959 | 59,240 | $13,603 | 437 | 46 | 62 |
| 11 | Oct 1959 | 52,780 | $13,570 | 437 | 43 | 62 |
| 12 | Jan 1960 | 48,180 | $10,475 | 389 | 35 | 61 |
| 13 | Apr 1960 | 43,840 | $10,475 | 389 | 35 | 60 |
| 14 | Jul 1960 | 39,320 | $10,454 | 389 | 31 | 60 |
| 15 | Oct 1960 | 35,780 | $10,424 | 389 | 27 | 58 |
| 16 | Jan 1961 | 32,240 | $7,508 | 352 | 27 | 55 |
| 17 | Apr 1961 | 29,360 | $7,477 | 352 | 24 | 55 |
| 18 | Jul 1961 | 27,040 | $7,394 | 352 | 22 | 55 |
| 19 | Oct 1961 | 23,940 | $7,383 | 352 | 22 | 53 |
| 20 | Jan 1962 | 22,080 | $3,888 | 346 | 20 | 56 |
Final map
Evaluation
failchecks 9/10 verdict: valid run (code checks and checklist) and task goal met (judge)
| Status | Kind | Check | Detail |
|---|---|---|---|
| pass | step | environment | Environment check (snapshot, engine, key) |
| pass | step | launch | Launch run-city as a detached process |
| pass | step | supervise | Supervise in the foreground until run-city exits |
| pass | step | render | Timelapse video rendered |
| pass | step | notes | Append Notes to summary.md |
| pass | code_check | outputs-exist | all present |
| pass | code_check | sim-reached-deadline | ended Jan 1962 after 20 turns; scenario verdict False |
| pass | code_check | decisions-logged | 20 rows for 20 turns |
| pass | code_check | llm-turns-valid | 0/20 model turns failed |
| pass | code_check | video-decodes | duration 30.0s |
| pass | code_check | limits-respected | 3.1 wall-minutes (model budget 45.0 min) |
| fail | judge | scenario-goal | LOST: City score 346 (goal > 500); engine verdict: lost (score 0 / threshold 1) |
| pass | checklist | notes-explain-outcome | summary.md Notes section cites model thoughts from turns 1, 8, and 20 and explains the population collapse and score trajectory |
| pass | checklist | player-matches-request | result.json confirms player=sonnet5, task=tokyo, seed=2, model=anthropic/claude-sonnet-5 |
| pass | checklist | no-silent-outage | run.log shows 20 consecutive turns with 0 LLM failures and no gaps |
Decision timeline
What the mayor thought and did each turn. Click a turn to jump the timelapse there.