Here's a proof game in 10 moves with a unique solution I created almost 30 years ago.
Check out my new blog about proof games that show a paradoxical theme. Name of blog is a spoiler for the above diagram!
Shortest-proof-game challenge
Sort:
Dec 20, 2024
0
#6903
Rocky64 wrote:
Here's a proof game in 10 moves with a unique solution I created almost 30 years ago.
Check out my new blog about proof games that show a paradoxical theme. Name of blog is a spoiler for the above diagram!
I'm surprised I got this so fast.
Dec 21, 2024
0
#6904
Rocky64 wrote:
Here's a proof game in 10 moves with a unique solution I created almost 30 years ago.
Check out my new blog about proof games that show a paradoxical theme. Name of blog is a spoiler for the above diagram!
One of my first proof games on this thread uses this exact theme.
Dec 21, 2024
0
#6906
BishopTakesH7 wrote:
Rocky64 wrote:
Here's a proof game in 10 moves with a unique solution I created almost 30 years ago.
Check out my new blog about proof games that show a paradoxical theme. Name of blog is a spoiler for the above diagram!
One of my first proof games on this thread uses this exact theme.
Good job in solving mine quickly! Is yours a unique game and how many moves?
Dec 21, 2024
0
#6907
Rocky64 wrote:
BishopTakesH7 wrote:
Rocky64 wrote:
Here's a proof game in 10 moves with a unique solution I created almost 30 years ago.
Check out my new blog about proof games that show a paradoxical theme. Name of blog is a spoiler for the above diagram!
One of my first proof games on this thread uses this exact theme.
Good job in solving mine quickly! Is yours a unique game and how many moves?
It is a unique game in 8 moves.
Dec 21, 2024
0
#6908
BishopTakesH7 wrote:
It is a unique game in 8 moves.
Great! Took me a while despite knowing the theme. At first I tried to solve it without a knight-switch and found this solution in 7.5 moves. (Not sure if this had been discussed previously; with 300+ posts in this thread I couldn't find the earlier mention.)
The sequence above is apparently unique too, and also quite different from the 8.0 solution, so I think it's worthwhile to set it as a 2-part problem. The 8.0 move game is:
Very nice!
Is there a unique 8.5 solution to #6940?
Hi
Mar 24, 2025
0
#6911
My friend has found a proof game of 69 moves for both sides. Can you reach this position with white to move faster?
BishopTakesH7 wrote:
My friend has found a proof game of 69 moves for both sides. Can you reach this position with white to move faster?
Yes. Here is a proof game in 36 moves, which I believe is the shortest:
daStrwbrry wrote:
BishopTakesH7 wrote:
My friend has found a proof game of 69 moves for both sides. Can you reach this position with white to move faster?
Yes. Here is a proof game in 36 moves, which I believe is the shortest:
It can be done in 35.5 [bB can go straight to h1 without stopping on g2]:
BigDoggProblem wrote:
It can be done in 35.5 [bB can go straight to h1 without stopping on g2]:
Perhaps I should have specified that my proof game was the shortest with "white to move", as requested. But 35.5 is indeed the shortest without any constraints - good spot.
Leither123 wrote:
Short little position I made
SPG in 12.0 moves. Could be unique, although I'm not sure.
FEN: 8/4pppp/8/8/8/PkPp4/1PpPPPP1/RqKB4 w - - 0 1
we're so close to the number
A proof game in 28