Posers and Puzzles
18 Apr 08
19 Apr 08
3 edits
Originally posted by ZweiteA proof game means that you are to construct a legal game ending in the diagram position. The "21.0" part means that the position should occur after 21 moves by both sides [in other words, after Black's 21st move].
What constitutes a proof game? Excuse my ignorance.
The moves need only be legal, and White and Black move cooperatively with the sole goal of reaching the specified position.
"PG in 19.5 moves" would mean that White makes 20 moves and Black 19 to reach the diagrammed position.
19 Apr 08
Originally posted by SwissGambitThanks for the clarification... I'll try this one, but maybe I should start with something more basic like:
A proof game means that you are to construct a legal game ending in the diagram position. The "21.0" part means that the position should occur after 21 moves by both sides [in other words, after Black's 21st move].
The moves need only be legal, and White and Black move cooperatively with the sole goal of reaching the specified position.
"PG in 19.5 moves" would mean that White makes 20 moves and Black 19 to reach the diagrammed position.
Proof game in 0.5
😉
19 Apr 08
Originally posted by JirakonSo if you say 'no', you mean that it could be but that there is another possibility.
Then it must be
WHITE: K-d1 K-c1 K-b1 K-a2 k-b3
BLACK: Q-a1 Qxf1 Qxh1 Q-a1 Q-a5 Q- b5
White: K-a2 K-b3 etc.
No.
By the way, when I say "No", I don't mean that's not how it's done, I just mean, with a superficial look, one can't determine that it's definitely the method.
19 Apr 08
Originally posted by Thomasterby no he meant that you cant just say that each piece must move in a certain pattern, sometimes there are multiple variations to come to the same position but until you "prove" the entire game you can not always be certain which is the correct variation....
So if you say 'no', you mean that it could be but that there is another possibility.
Right Jirakon? 😉