#### Posers and Puzzles

SwissGambit
Posers and Puzzles 05 Mar '08 00:35
1. SwissGambit
Caninus Interruptus
05 Mar '08 00:35

Helpmate in 3
a) diagram
b) -Nb7

In a helpmate, Black moves first, and both sides collaborate to checkmate Black within the time given.
2. 05 Mar '08 02:271 edit
i've never done one of these before but how about...

...Nd8 cxd8=Q+..Kxd8 b7 oh whoops that attacks c8 square so ..Kc8 b8=Q# is no good. not to mention it's not even mate lol

but is that the correct number of moves for a helpmate? would that be a successful helpmate in 3 were black to be checkmated at the end?
3. 05 Mar '08 02:371 edit
In a helpmate, Black moves first, and both sides collaborate to checkmate Black within the time given.[/b]
could do it two different ways with white checkmating on their 4th move...
on the 3rd, can't see how... yet...
4. SwissGambit
Caninus Interruptus
05 Mar '08 03:49
Originally posted by Aetherael
i've never done one of these before but how about...

...Nd8 cxd8=Q+..Kxd8 b7 oh whoops that attacks c8 square so ..Kc8 b8=Q# is no good. not to mention it's not even mate lol

but is that the correct number of moves for a helpmate? would that be a successful helpmate in 3 were black to be checkmated at the end?
Yes, you get three moves for each side. White's 3rd move should give mate.
5. 05 Mar '08 03:56
Originally posted by SwissGambit
[fen]b1k5/KnP5/1P6/8/8/8/8/8[/fen]
Helpmate in 3
a) diagram
b) -Nb7

In a helpmate, Black moves first, and both sides collaborate to checkmate Black within the time given.
it seems you r a genious i could find 5 ways for mate in 4 but......
6. 05 Mar '08 05:52
That was annoying!
7. SwissGambit
Caninus Interruptus
05 Mar '08 06:41
Originally posted by alexdino
it seems you r a genious i could find 5 ways for mate in 4 but......
This one is not my composition. I usually don't give the composer's name right away, to avoid people "solving" by just looking up the name.

These days, most composers will computer-test a problem before they have it printed, just to make sure there are no unwanted solutions.
8. SwissGambit
Caninus Interruptus
05 Mar '08 06:42
Originally posted by Jirakon
That was annoying!
Isn't it, though? For some reason, I was stalled on a), but got b) really quickly once I set a) aside for a bit.
9. 05 Mar '08 09:311 edit
Very hard.

What do you mean by -Nb7 in (b)?
10. 05 Mar '08 15:051 edit
ARGHHHHHHH
I noticed now....
I started solving the problem with the white king in a6...... gonna start all over....
11. 05 Mar '08 16:53
No way... there' no solution...
Initially, there are only 5 moves... 4 with knight, one with king.
Neither gives mate in 3 by white.
12. Yuga
Renaissance
05 Mar '08 17:32
No way... there' no solution...
Initially, there are only 5 moves... 4 with knight, one with king.
Neither gives mate in 3 by white.
Once you have the correct idea for limiting King squares, the problem is much easier. Quite annoying though until you find it!
13. SwissGambit
Caninus Interruptus
05 Mar '08 17:38
Originally posted by sb3700
What do you mean by -Nb7 in (b)?
It means that you are to remove the Nb7 from the diagram and find another helpmate in 3.
14. 05 Mar '08 18:12
argh... PM a clue, please... I'm going nuts...
15. 06 Mar '08 01:19
well if you take out Nb7 than its ok: 1.a8-c6 1.b6-b7;2.c8-d7 2.c7-c8(bishop) 3.d7-c7 3.b7-b8(Queen) =mate
But i can't wait to see it done with Nb7