First, print and cut the pieces below. Then, arrange them so that they form a triangle and then rearrange them so that they form a square.
The solution is shown below.
What is fascinating about these dissections is that one can transform into the other by keeping the pieces attached to each other in a chain and simply
Split the grid into four identical regions, such that each region contains a lion and a crown.
The solution is shown below.
Replace every letter with a different digit between 0 and 9, such that you get a correct calculation.
The answer is 9567 + 1085 = 10652.
You can first see that M = 1. Then S = 8 or 9 and O = 0. MORE is at most 1098, and if S = 8, then E = 9, N is either 9 or 0, but this is impossible. Therefore S = 9, N = E + 1. You can check easily the 6 possibilities for (N, E) and then find the answer.
