02 — Run · Round 1 · Grow a city · jev-grow-s2
Jev Router plays Grow a city
Empty generated map, $20,000, 20 years: reach 10,000 people without going bankrupt. Ended Jan 1920: 19,660 people (bankrupt), city score 596.
The model used its 45-minute budget by turn 59; the city ran on untouched from there to the deadline.
GOAL MISSED seed 2
Jev Router
typesafe/jev-router
population 19,660 (goal 10,000), city score 596; BANKRUPT: treasury under $500 for 8 turns in a row
Population (start → end)0 → 19,660
Peak population25,140City score (start → end)500 → 596
Funds at the end$2,545Crime / pollution / traffic99 / 74 / 76
Zones R / C / I55 / 15 / 31
Power plants (coal / nuclear)2 / 0Police / fire stations2 / 0
Turns (model / failed)80 (58 / 10)
Actions applied / rejected141 / 0
Mean turn latency47.6sModel cost$2.137Wall clock46.3 min
Jetty run ID5de24fe4
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 1900 | 0 | $20,000 | 500 | 0 | 0 |
| 1 | Apr 1900 | 0 | $13,122 | 712 | 0 | 0 |
| 2 | Jul 1900 | 380 | $10,010 | 712 | 28 | 60 |
| 3 | Oct 1900 | 1,680 | $5,248 | 712 | 12 | 56 |
| 4 | Jan 1901 | 3,800 | $3,215 | 532 | 12 | 56 |
| 5 | Apr 1901 | 6,380 | $2,129 | 532 | 25 | 56 |
| 6 | Jul 1901 | 8,820 | $1,574 | 532 | 51 | 56 |
| 7 | Oct 1901 | 12,760 | $1,574 | 532 | 51 | 56 |
| 8 | Jan 1902 | 15,800 | $2,360 | 424 | 81 | 68 |
| 9 | Apr 1902 | 18,480 | $2,047 | 424 | 127 | 84 |
| 10 | Jul 1902 | 21,100 | $2,037 | 424 | 127 | 85 |
| 11 | Oct 1902 | 22,040 | $2,037 | 424 | 149 | 85 |
| 12 | Jan 1903 | 22,900 | $3,580 | 239 | 157 | 87 |
| 13 | Apr 1903 | 23,800 | $551 | 239 | 157 | 80 |
| 14 | Jul 1903 | 24,060 | $137 | 239 | 160 | 80 |
| 15 | Oct 1903 | 24,260 | $137 | 239 | 155 | 84 |
| 16 | Jan 1904 | 24,280 | $450 | 340 | 155 | 85 |
| 17 | Apr 1904 | 24,160 | $242 | 340 | 170 | 87 |
| 18 | Jul 1904 | 25,140 | $42 | 340 | 166 | 87 |
| 19 | Oct 1904 | 24,340 | $42 | 340 | 166 | 90 |
| 20 | Jan 1905 | 21,500 | $1,341 | 271 | 163 | 89 |
| 21 | Apr 1905 | 19,340 | $831 | 271 | 143 | 89 |
| 22 | Jul 1905 | 17,620 | $831 | 271 | 143 | 88 |
| 23 | Oct 1905 | 15,200 | $831 | 271 | 119 | 80 |
| 24 | Jan 1906 | 13,480 | $378 | 252 | 80 | 80 |
| 25 | Apr 1906 | 12,580 | $378 | 252 | 80 | 77 |
| 26 | Jul 1906 | 10,360 | $378 | 252 | 68 | 72 |
| 27 | Oct 1906 | 8,960 | $378 | 252 | 57 | 61 |
| 28 | Jan 1907 | 7,760 | $642 | 241 | 57 | 61 |
| 29 | Apr 1907 | 6,480 | $642 | 241 | 51 | 58 |
| 30 | Jul 1907 | 5,820 | $642 | 241 | 40 | 53 |
| 31 | Oct 1907 | 4,800 | $642 | 241 | 40 | 53 |
| 32 | Jan 1908 | 4,420 | $698 | 281 | 36 | 48 |
| 33 | Apr 1908 | 5,120 | $698 | 281 | 32 | 47 |
| 34 | Jul 1908 | 4,560 | $698 | 281 | 32 | 49 |
| 35 | Oct 1908 | 4,400 | $687 | 281 | 27 | 49 |
| 36 | Jan 1909 | 3,920 | $697 | 336 | 24 | 45 |
| 37 | Apr 1909 | 3,240 | $697 | 336 | 24 | 49 |
| 38 | Jul 1909 | 2,500 | $680 | 336 | 19 | 49 |
| 39 | Oct 1909 | 2,120 | $680 | 336 | 15 | 42 |
| 40 | Jan 1910 | 1,560 | $748 | 247 | 15 | 41 |
| 41 | Apr 1910 | 1,520 | $690 | 247 | 13 | 41 |
| 42 | Jul 1910 | 1,220 | $670 | 247 | 14 | 44 |
| 43 | Oct 1910 | 2,440 | $635 | 247 | 14 | 40 |
| 44 | Jan 1911 | 3,160 | $584 | 617 | 11 | 59 |
| 45 | Apr 1911 | 2,920 | $280 | 617 | 14 | 59 |
| 46 | Jul 1911 | 2,900 | $280 | 617 | 14 | 57 |
| 47 | Oct 1911 | 2,400 | $280 | 617 | 16 | 58 |
| 48 | Jan 1912 | 1,920 | $481 | 450 | 15 | 58 |
| 49 | Apr 1912 | 1,860 | $481 | 450 | 15 | 52 |
| 50 | Jul 1912 | 1,640 | $481 | 450 | 16 | 57 |
| 51 | Oct 1912 | 1,620 | $421 | 450 | 14 | 51 |
| 52 | Jan 1913 | 1,440 | $489 | 400 | 14 | 51 |
| 53 | Apr 1913 | 1,440 | $489 | 400 | 13 | 51 |
| 54 | Jul 1913 | 1,280 | $489 | 400 | 13 | 51 |
| 55 | Oct 1913 | 1,120 | $489 | 400 | 13 | 51 |
| 56 | Jan 1914 | 960 | $538 | 354 | 12 | 51 |
| 57 | Apr 1914 | 960 | $538 | 354 | 12 | 53 |
| 58 | Jul 1914 | 960 | $538 | 354 | 12 | 53 |
| 59 | Oct 1914 | 960 | $538 | 354 | 12 | 53 |
| 60 | Jan 1915 | 960 | $587 | 429 | 12 | 53 |
| 61 | Apr 1915 | 960 | $587 | 429 | 12 | 53 |
| 62 | Jul 1915 | 800 | $587 | 429 | 12 | 53 |
| 63 | Oct 1915 | 1,320 | $587 | 429 | 12 | 47 |
| 64 | Jan 1916 | 2,540 | $714 | 714 | 12 | 44 |
| 65 | Apr 1916 | 4,520 | $714 | 714 | 12 | 44 |
| 66 | Jul 1916 | 6,240 | $714 | 714 | 20 | 54 |
| 67 | Oct 1916 | 8,100 | $714 | 714 | 20 | 59 |
| 68 | Jan 1917 | 9,340 | $1,115 | 675 | 34 | 63 |
| 69 | Apr 1917 | 10,840 | $1,115 | 675 | 49 | 63 |
| 70 | Jul 1917 | 11,360 | $1,115 | 675 | 49 | 68 |
| 71 | Oct 1917 | 12,540 | $1,115 | 675 | 59 | 68 |
| 72 | Jan 1918 | 12,600 | $1,526 | 602 | 72 | 68 |
| 73 | Apr 1918 | 13,000 | $1,526 | 602 | 72 | 66 |
| 74 | Jul 1918 | 13,580 | $1,526 | 602 | 77 | 69 |
| 75 | Oct 1918 | 14,500 | $1,526 | 602 | 85 | 69 |
| 76 | Jan 1919 | 15,520 | $2,006 | 570 | 85 | 74 |
| 77 | Apr 1919 | 16,940 | $2,006 | 570 | 90 | 78 |
| 78 | Jul 1919 | 18,380 | $2,006 | 570 | 98 | 77 |
| 79 | Oct 1919 | 18,640 | $2,006 | 570 | 98 | 77 |
| 80 | Jan 1920 | 19,660 | $2,545 | 596 | 99 | 74 |
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 1920 after 80 turns; scenario verdict None |
| pass | code_check | decisions-logged | 80 rows for 80 turns |
| pass | code_check | llm-turns-valid | 10/58 model turns failed |
| pass | code_check | video-decodes | duration 35.6s |
| pass | code_check | limits-respected | 46.3 wall-minutes (model budget 45.0 min) |
| fail | judge | city-goal | population 19,660 (goal 10,000), city score 596; BANKRUPT: treasury under $500 for 8 turns in a row (score 0 / threshold 10,000) |
| pass | checklist | notes-explain-outcome | Notes section cites model thoughts from turns 1, 15, and 19 and explains why the population goal was met but bankruptcy caused failure |
| pass | checklist | player-matches-request | result.json confirms player=jev task=grow seed=2 run-id=jev-grow-s2-retry as requested |
| pass | checklist | no-silent-outage | first run had provider outage (25/48 failures) and was retried once per rules; retry had isolated failures (10/58) with no long silent stretch |
Decision timeline
What the mayor thought and did each turn. Click a turn to jump the timelapse there.