Proof Games and more Proof Games

Do you want me to post a screenshot?

I've no idea why you'd do that since the record already shows it. :P

Let the record show that the record shows the record showing Frankwho offering evidence to substantiate his substantiatied claim in a less redundant manner than the redunancy of the record.

Let the record show that the record shows the record showing Frankwho offering evidence to substantiate his substantiatied claim in a less redundant manner than the redunancy of the record.

I couldn't resist double posting on this 

Speaking of redundant...you just double-posted.

Are you saying you saw the message?

I'm sorry. So very, very sorry.

That was quick!

I was still working on the van den heuvel ... after I finally cracked it, I discovered that BigDoggProblem had revealed the answer about half an hour earlier. Worth the effort though,

I noticed black's pieces kinda set up a wall to block out the bishop so I found the bishop tour trying to get it through.

I would call McCracken's one quite an honest PG. Black's moves are uniquely determined, and then you just have to find the wBh8 a way through the machinery.

van den Heuvel's is sneakier. The thematic content is very well hidden. Black's moves are initially not all completely determined, and white appears to not be in time trouble. A good example of the madness that can happen in PGs though.

Hashimoto's I think is somewhere in between the two in difficulty. Always in the initial phase of solving working out optimal rook paths is a headache - white's rooks here offer the usual frustration, but also lead you to seeing the thematic content.

Hmm..."honest"....not sure he'd take that as a compliment. But it's probably true. The intent there isn't as hard to guess.

BTW, Hashimoto's PG was SOLV'D by uncia_uncia.

Here's another.

Composer: tell ya later.

PG in 18.5

I can hazard a good guess as to the composer from the presentation of the problem alone.

SOLV'D [Remellion]

Rem guessed that the composer was D. Pronkin. It was actually K. Prentos and H. Grudzinski.

Incidentally, computers have trouble solving this one, so it's proved very handy at detecting cheats. [On other sites, I've had 'newcomers' show up and solve even the most difficult problems in minutes, but they choke on this one!]

I'm late again:

Next:

Ah, my guess was wrong. Still, great problem - wB/wR Pronkins and a tricky hidden cross-capture. And interesting to know it trips up PG engines... do (online) solving tourneys usually have measures against that?

Also BigDogg, I just realised you've been giving more information than intended. The FENs contains exploitable retro information: castling rights, and the ply count since last pawn move/capture. Not that it makes finding the solution any less tricky though. Manually inputting the position, posting as a static diagram, or manually changing the castling rights to "-" and the 2nd last number to "0" before posting would hide those.

Meh, too much extra work. If people really want to solve without help, all they have to do is not look at the FEN.