Shortest-proof-game challenge
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@6726
EvinSung wrote:
#6726
Unique SPG in 14.5. The knight swap is needed.
Ignore the above post, it isn’t unique: Ng8 has multiple ways to g1.
Here is EvinSung’s edited position.
daStrwbrry wrote:
Ignore the above post, it isn’t unique: Ng8 has multiple ways to g1.
Here is EvinSung’s edited position.
Gotta love chess.com's unlimited edit policy.
Leaves solvers spinning their wheels, trying to hit a moving target.
The end lesson is not to engage posts so quickly. Just what any healthy forum needs.
Leither123 wrote:
#6731
13.0
Leither123 wrote:
#6733
14.0
@6736
First try:
EvinSung wrote:
#6736
Unique SPG in 14.5.
Two questions:
1. Is this position's SPG unique?
2. For what other move count does the position have a unique proof game?
n9531l1 wrote:
Two questions:
1. Is this position's SPG unique?
2. For what other move count does the position have a unique proof game?
1. Yes
Please don't use computers. I did a test already. It's sound.
Hardly original, but seems to be the shortest possible problem of this theme.
BigDoggProblem wrote:
Please don't use computers. I did a test already. It's sound.
Hardly original, but seems to be the shortest possible problem of this theme.
Is "this theme" the theme of a position with unique proof games of different lengths?
n9531l1 wrote:
BigDoggProblem wrote:
Please don't use computers. I did a test already. It's sound.
Hardly original, but seems to be the shortest possible problem of this theme.
Is "this theme" the theme of a position with unique proof games of different lengths?
No, it's a different theme. I wouldn't have said "shortest" for a thing like that.
Is there a name for this idea where the knight visits every knight square?
I don’t think there is a name for this [...]
I suppose it could also be a very literal knight's tour.