Chapter 107: Repair time and the running track
Twenty yards of repair time and the running track
A repair job takes time: the car must stand at its service track for a set number of moves, and taking it away part way through starts the work over.
A running track loops to a far lead and far ladder, so open tracks can be worked from either end. One move takes the engine and its cut round the loop.
20 yards, pars from 5 to 15 moves. Beside its theme, chapter 107 draws on the hump, kicks and open slots, with two breathers of plain sorting and extra cars. Difficulty runs as a sawtooth: runs of easy yards, a spike, a breather.
The yards
| # | Yard | Par | The job |
|---|---|---|---|
| 1 | Yard 107.1 | 8 | Dover on 1, Albany on 2, Concord on 3, Erie on 4. Watch for a running track to the far lead, cars that need the shop first. |
| 2 | Yard 107.2 | 5 | Albany on 1, Dover on 2, Erie on 3, Concord on 4. Watch for a hump yard. |
| 3 | Yard 107.3 | 9 | Albany on 1, Concord on 2, Boston on 3, Dover on 4. Watch for a running track to the far lead, cars that need the shop first. |
| 4 | Yard 107.4 | 5 | Dover on 1, Erie on 2, Boston on 3, Albany on 4. Watch for 1 kick allowed. |
| 5 | Yard 107.5 | 9 | Albany on 1, Dover on 2, Erie on 3, Concord on 4. Watch for a running track to the far lead, cars that need the shop first. |
| 6 | Yard 107.6 | 7 | The outbound Albany, Albany, Albany, Dover, any car on Track 1, Concord on 2, Boston on 3, Erie on 4. |
| 7 | Yard 107.7 | 9 | Albany on 1, Concord on 2, Boston on 3, Dover on 4. Watch for a running track to the far lead, cars that need the shop first. |
| 8 | Yard 107.8 | 6 | Boston on 1, Erie on 2, Dover on 3, Albany on 4. Watch for a hump yard. |
| 9 | Yard 107.9 | 10 | Dover on 1, Concord on 2, Erie on 3, Albany on 4. Watch for a running track to the far lead, cars that need the shop first. |
| 10 | Yard 107.10 | 6 | Albany on 1, Erie on 2, Dover on 3, Concord on 4. |
| 11 | Yard 107.11 | 9 | The outbound Dover, Erie, Dover, Erie on Track 1, Albany on 2, Boston on 3, Concord on 4. Watch for a running track to the far lead, cars that need the shop first. |
| 12 | Yard 107.12 | 7 | The outbound any car, Dover, Albany, any car on Track 1, Concord on 2, Boston on 3, Erie on 4. |
| 13 | Yard 107.13 | 14 | Albany on 1, Erie on 2, Dover on 3, Concord on 4. Watch for a hump yard, a running track to the far lead, cars that need the shop first. |
| 14 | Yard 107.14 | 6 | Boston on 1, Dover on 2, Albany on 3, Concord on 4. |
| 15 | Yard 107.15 | 8 | The outbound Boston, Dover, Dover on Track 1, Albany on 2, Concord on 3, Erie on 4. Watch for a running track to the far lead, cars that need the shop first. |
| 16 | Yard 107.16 | 7 | The outbound Dover, Dover, Albany on Track 1, Erie on 2, Boston on 3, Concord on 4. Watch for 2 kicks allowed. |
| 17 | Yard 107.17 | 13 | The outbound Boston, Albany, Boston, any car, Boston on Track 1, Dover on 2, Concord on 3, Erie on 4. Watch for a running track to the far lead, cars that need the shop first. |
| 18 | Yard 107.18 | 7 | The outbound Concord or Erie, Albany, Albany or Dover on Track 1, Boston on 2, Dover on 3, Erie on 4. |
| 19 | Yard 107.19 | 15* | The outbound Concord, Concord, Concord, Dover, Dover on Track 1, Albany on 2, Boston on 3, Erie on 4. Watch for a running track to the far lead, cars that need the shop first. |
| 20 | Yard 107.20 | 10 | Erie on 1, Albany on 2, Boston on 3, Concord on 4. Watch for a hump yard, a running track to the far lead, cars that need the shop first. |
* A par marked with a star is the best known line for a yard too large to solve outright.
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