Extremely difficult 'mate in n' problems

With roughly 3 < n < 25. Know any?

Originally posted by heinzkat
With roughly 3 < n < 25. Know any?

Originally posted by SwissGambit
[fen]b5nq/K2Npp2/2pp1Ppr/2pk4/Q1R2pB1/2P1b3/R2p4/n2r4 w[/fen]
Mate in 6

I'm not sure how difficult this will be, since I didn't try solving it myself, but the composer has a reputation for being tough...

This is a nice puzzle. Can you tell me the composer?

Originally posted by h9i9j9
This is a nice puzzle. Can you tell me the composer?

pm'd the answer pretty good puzzle my friend

SOLVED already?

Originally posted by Skunk Juice2
pm'd the answer pretty good puzzle my friend

Originally posted by SwissGambit
SOLV'D [main line given; ideally, a solution should give the threat and all relevant defenses]

Here is another nice moremover.

Mate in 7.

Originally posted by David113
Here is another nice moremover.
[fen]1N6/rpR1K1p1/3pp1P1/1B1kppNb/1Pp4r/2B3bq/6p1/6n1[/fen]
Mate in 7.

Originally posted by heinzkat
Why not just 1. Nc6 with 2. Ne7# or 2. Bxc6#?

Nice try, I set up the position incorrectly, with Ke7->d7. :-( (sad smiley face)

OK, I'll supply one too, here's one by Sawtschenko.



White to move, mate in eight.

Originally posted by heinzkat
Composer?