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JakimPL
KieferSmith wrote:

It is white to move

Whoever finds the fastest proof game wins

First try, probably suboptimal:

Second try:

JakimPL
snandorthegreat wrote:

e5 cannot occur in one move, because… let me show you.

What about that one (another solution with e7-e5):

snandorthegreat
JakimPL wrote:
snandorthegreat wrote:

e5 cannot occur in one move, because… let me show you.

What about that one (another solution with e7-e5):

 

god. damnit.

alright, alright, fine. there are now two solutions.

KieferSmith

Next one! I got 30.

snandorthegreat

Definitely suboptimal, but I managed 26.

KieferSmith

Not suboptimal at all! I got 30, but only because I forgot rooks existed. happy.png

JakimPL

Still suboptimal, I believe. 18 is a theoretical lower bound (4 moves per each bishop, 3 moves per each knight, 4 pawn moves) but I don't know whether it is attained.

snandorthegreat

Here’s another shortest proof game with just one solution, this time after black’s 4th move.

KieferSmith
KieferSmith

Oh wait, i missed that the f-pawn was missing.

snandorthegreat
snandorthegreat wrote:

Here’s another shortest proof game with just one solution, this time after black’s 4th move.

I did a bit more fooling around on the analysis board, and… for Christ’s sake, I made another one with two solutions!

KieferSmith
snandorthegreat
KieferSmith wrote:
 

You found one, but there’s another!

bald55
How to trick black into playing as white:
JakimPL
snandorthegreat wrote:
KieferSmith wrote:
 

You found one, but there’s another!

And another!

JakimPL

Another proof game:

White to move, after 8th black's move. How did the game go? (multiple solutions)

snandorthegreat
JakimPL wrote:
snandorthegreat wrote:
KieferSmith wrote:
 

You found one, but there’s another!

And another!

ah… I was thinking of

Thepasswordis1234
zestymallpl wrote:

White to move and win. Difficulty: Easy-Medium

Rb8 wasn't exactly the best move, but still, fun puzzle happy.png

BobarBG
 

What would be this puzzle's rating?
drdos7

This puzzle doesn't quite work because black can play 1...f2+!