About Endgame Conditions

This pages do not strictly belong to the Rules of Go section. But the ideas discussed here are very basic, and crucial for all beginners to be familiar with.

Over or Not Over?

Over the years of playing and teaching Go, I found out that them concept which poses the most difficulties to beginners is the concept of the end of game. Why is that so? Well, probably because Go, in this respect, is completely different that most of the other games people are already familiar with. Each of the "normal" and "popular" games has a clearly defined condition for ending the game. Lets look at a few examples.

• Chess — the game is over when a king is mated, when a stalemate occurs, when one of the players resigns, or when a draw is agreed upon. I exclude here the murky 50-moves rule, but there is that one too.
• Reversi — the game is over when all the fields are filled.
• Checkers — the game is over when all the pieces of one color are off the board.
• Tic-Tac-Toe — the game is over when one player obtained a three-in-the-row or when all the fields are occupied.
• Monopoly — the game is over when all but one players are bankrupt (or when everybody is too tired or bored and they agree to stop.)
• Bridge — the game is over when all the cards are played.
• and so on...

As you can see, in all of the games, the condition for ending the game is not only well defined and cannot be missed, but often it also gives an immediate clue as to the outcome of the game. Go is different.

So, what about Go?

In Go, unlike in most other games, the end of the game is reached by agreement. Unless, of course, one of the players resigns, but I will refrain from discussing this for now. The subject is covered in some detail here.

Reaching an agreement means that both players have to actually talk and agree that the game is done and that the scoring process should begin. The mechanics of that varies, but usually it is accomplished by both players saying "Pass" instead of playing their move. The two passes must be consecutive. That means that when one player passes, the other has to pass immediately after, or the game will continue (if s/he makes a move instead of passing.)

Sound easy, I know. But a very important, and not always simple, evaluation must be performed before the decision about ending the game can be reached. This evaluation is as follows:

Endgame Conditions:
— Each of the players must, separately, decide that they cannot gain any more points to be gained by further play!
— Each of the players must, separately, decide that they cannot lose any more points by passing and thus declining a move.
— Both players must communicate their decisions to each other and then agree.
— Once the above happens, both players pass and the game is over - the scoring process can begin.

I will talk more about when and how to pass here.

During formal settings, like in a tournament, it is usually specified by the rules what constitutes a pass. It can be, for example, pressing one's game clock without making a move. Such non-verbal communication can be useful when playing against people who speak a different language, for example.

In a less formal setting, like in a friendly club game, the options to pass can be almost anything. You can look at your opponent and ask "Over?", for example? Or you can say "Let's score". Or anything. The exact words and procedures are not crucial, as long as a communication is made and an agreement is reached.

The important thing here is to understand that at any point during the game, if it is your turn to play, you have these two choices - you can make a move by placing a stone on the board or you can pass thus refusing to make a move. Your opponent, during his turn, has the same right to choose. When both players pass consecutively, it signifies that they both agree that the game should stop and the scoring should begin.

One important issue to address before anything else is the simple possibility - what if the players disagree as to the end of the game? This whole thorny issue is covered on the next page, in some detail as it deserves.