Mined Squares

This position is a simple example of both mined squares and triangulation in chess endgames

in this position e3-e5 are mined squares

because if any king try to sit on e3 or e5 then they will fall into zugzwang

the other name of mined squares are untouchable squares 

ok

lets suppose its black to move inthe given diagram

Ke5 then white simply play Ke3 gained the opposition and see black is sitting on the mined square e5 bbefore white king so now e4 will going to lose

And suppose its white to move then this position will easily solve by the concept of triangulation

here is the link

https://en.wikipedia.org/wiki/Zugzwang#Mined_squares

i know my english is not easy to understand so i hope this wiki will be useful for u

There are many types of squares like Floating Squares, mined squares, key squares,and the corresponding squares

etc etc etc

in future i will post more about squares

There are also toilet paper squares right?