This time I really found it. Short and to the point.
Hitoshi Yanami
PR01 Problem Paradise 04-06/1998
PG in 12.0 moves [C+]
Shortest-proof-game challenge
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BigDoggProblem wrote:
This time I really found it. Short and to the point.
Hitoshi Yanami
PR01 Problem Paradise 04-06/1998
PG in 12.0 moves [C+]
An impressive find.
Apr 12, 2024
0
#6744
Well, alright then. Here's that other version that I made which I've computer checked.
QC1 to C5#
For the very first one
Leither123 wrote:
Well, alright then. Here's that other version that I made which I've computer checked.
Apr 12, 2024
0
#6748
n9531l1 wrote:
BishopTakesH7 wrote:
I do like this concept of an (almost) excelsior SPG where a pawn captures all the way to the back rank. I don't suppose our experts know of any?
That will be a good one if someone can find it. Here's a position with a unique SPG including an Excelsior white and a pawn that needs a non-capture move before capturing all the way to the back rank.
Clever.
BishopTakesH7 wrote:
n9531l1 wrote:
Here's a position with a unique SPG including an Excelsior white and a pawn that needs a non-capture move before capturing all the way to the back rank.
Clever.
I think the really clever ones are #6772 found by BigDoggProblem and #6774 composed by Leither123.
BishopTakesH7 wrote:
Captureless proof game. (#6780)
Unique SPG in 21.0.
Here's another captureless proof game. I think it holds the current move length record for a capture-free unique SPG.
n9531l1 wrote:
Here's another captureless proof game. I think it holds the current move length record for a capture-free unique SPG.
It was a long one, but I looked a little more and found a longer one. Maybe it holds the current move length record.
BishopTakesH7 wrote:
Captureless proof game.
This was a good one. ...Rf4! Is a nice touch. Is it your composition?
Apr 14, 2024
0
#6755
BigDoggProblem wrote:
BishopTakesH7 wrote:
Captureless proof game.
This was a good one. ...Rf4! Is a nice touch. Is it your composition?
Yep. Felt like making a captureless game.
I don't know if anyone is working on #6783. I'll help by giving the move count, which is proof game in 38.5. For another hint, although not longest, it might still hold the move length record for a capture-free unique SPG which includes a castling move.
n9531l1 wrote:
I don't know if anyone is working on #6783. I'll help by giving the move count, which is proof game in 38.5. For another hint, although not longest, it might still hold the move length record for a capture-free unique SPG which includes a castling move.
SOLV'D
Tough solve. Took longer than it should to notice the bolt hole on e7 for wK.
BigDoggProblem wrote:
n9531l1 wrote:
I don't know if anyone is working on #6783. I'll help by giving the move count, which is proof game in 38.5. For another hint, although not longest, it might still hold the move length record for a capture-free unique SPG which includes a castling move.
SOLV'D
Tough solve. Took longer than it should to notice the bolt hole on e7 for wK.
Very impressive work. I wonder if the 41.5 move proof game for #6784 will be as tough.
There's no need to put too fine a point on it. One dual is too many for SPG's.
I do like this concept of an (almost) excelsior SPG where a pawn captures all the way to the back rank. I don't suppose our experts know of any?
I was able to find this one:
D. Pronkin, Rex Multiplex 1985
Proof Game in 29.5 moves
C+
Edit: not quite! It's not a capture onto the back rank. Stay tuned...
[and feel free to solve it anyway, if you can]