let's write a book about Hex

What does "equivalent" mean in the examples provided by shalev?

shalev at 2014-07-12

The chapter will be about useless moves. Some of this information is on the Hex wiki, but not everything. For example, I think most people know that this is equivalient to this. However, Many people probably don’t know that this is equivalent to this, or that this is equivalent to this.

Rex,

First, you should ignore the white pieces and only look at the pattern of black pieces (trmph forces me to have an equal number of black and white stones on the board, so I had to dump white stones in the corner).

Second, when I say two patterns are equivalent, I mean that replacing one by the other does not affect who wins the game (assuming both players play well), and that this property would hold no matter what the rest of the board looks like. Thus, if in a real game you encounter one of the patterns I mentioned, you may replace it by the equivalent pattern without changing the outcome of the game.

Hi,I'm very interested by this project !I can translate in french...

Shalev, sorry I didn't see your reply. That clears things up... thanks very much.