Puzzles
14 December
You start at the point marked A in the picture below. You want to get to the point marked B. You may travel to the right, upwards, or to the left along the black lines, but you cannot pass along the same line segment more than once.
![](javascript:showlimage("advent2021-routes.png"))
Today's number is the total number of possible routes to get from A to B.
12 December
You start at the point marked A in the picture below. You want to get to the point marked B. You may travel to the right or upwards along the black lines.
Today's number is the total number of possible routes to get from A to B.
5 December
You start at A and are allow to walk left, right, up or down along the grid. The grid continues forever in every direction. After you have walked thirteen units, how many different locations could you be in?
![](javascript:showlimage("grid2017.png"))
9 December
You start at A and are allowed to move either to the right or upwards.
![](javascript:showlimage("routes2016.png"))
How many different routes are there to get from A to B?
9 December
You start at A and are allowed to move either to the right or upwards.
![](javascript:showlimage("routes.png"))
How many different routes are there to get from A to B?