Castle Rock Sidings is a puzzle as well as a simple sidings.

So far the easy version of the game is that the player has to pull out three or four cards from the pile which represents the wagons that must be shunted into position, however, the player must first shunt any brake van into the train first, as brake vans are a necessity on trains. Once the train is completed, the player wins. 

The harder version of the game is the player must pull out wagon-cards from the pile and put them in order of the four sidings, this time not making a train but instead rearranging the sidings. This is harder because the player now must shunt all the wagons on the four tracks, which so far is an estimation of just under 20 wagons.

To make both the games even more difficult, there could be a time limit.

Talking of time limits; one of the WW2 events at Castle Rock is a re-enactment of a gunpowder van in a shunters yard which is based on actual events (see Castle Rock events blog entry) 

In this game, an ‘air raid’ can randomly occur and a wagon next to the gunpowder van catches fire (with LEDs)  The player must shunt the wagons to get to the gunpowder van, which by then would have had a small fire start on it and take it to the water tower to be extinguished in under 3 mins. If the time runs out, the gunpowder van ‘explodes’ (with a speaker inside that goes ‘BANG!!’).

If Castle Rock Sidings ever reaches a mode event, you can come and see these games in action. Maybe you could try your skills at it too.