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Ribannah
Hired Hero
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posted February 11, 2006 01:03 AM |
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In case of a three-mover (or more), you will need to give the main variations as well. Just a key is not a solution.
____________
If you have no feet, don't walk on fire.
[url=http://www.castlegobs.nl/]Castle Gobs[/url]
Project Lead of the Might and Magic Tribute game
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Nebuka
Promising
Supreme Hero
Save me Jebus!
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posted February 11, 2006 01:43 AM |
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Edited by Nebuka on 10 Feb 2006
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Will be there soon, just to write them. 
EDIT:
1. f5xe6 d7xe6
2. Nd5e7+ Kd6xc7
3. Ba1e5++
1. f5xe6 Re8xe6
2. Ka5b6 a)Re6e7 b)rook anywhere but on e7 c)Bf8e7
3. a)Nd5e3++ b)Rc7xd7++ c)Nd5b4++
1. f5xe6 Re8e7
2. e6xd7 a)Re7xd7 b)Re7e8 c)rook anywhere else
3. a)Rc7c6++ b)d7xe8N++ c)d7d8Q++
1. f5xe6 Re8c8
2. Rc7xd7+ Kd6c5
3. Ba1d4++
1. f5xe6 Re8d8
2. e6xd7 a)Rd8xd7 b)Rd8c8 c)every other move
3. a)Rc7xd7++ b)d7xc8N++ c)Rc7c6++
And some more (black rook on a8, b8, bishop to e7...all lead to 2. Rc7xd7 Kd6c5 3. Ba1d4++)
Quite a fun composition. Thanks for it.
____________
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csarmi
Supreme Hero
gets back
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posted February 11, 2006 07:14 AM |
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Edited by csarmi on 11 Feb 2006
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If fxe6 is indeed the solution, this is a very unusual composition. Key moves are seldom so violent (rude) and obvious.
The variations seem correct to me and still, I am doubtful. Checked, it works. :-(
Use that "++" then if you like it better.
Taking a bishop in C6 is not gonna work because as soon as you do it, you are left with unsufficient material (black claims a draw right away, claiming that your bishop is black-colored and his king can't be forced out of a6.)
A hint for C1: robots can't solve it.
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Ribannah
Hired Hero
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posted February 11, 2006 12:32 PM |
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Nebuka's solution is correct. In the usual shorthand:
1.fxe6 threat 2.Rxd7+ Kc5 3.Bd4
(a) 1...Rd8 2.exd7 threat/Rc8 3.Rc6/dxc8=N
(b) 1...Re7 2.exd7 threat/Rc6 3.Rc6/d8=Q
(c) 1...dxe6 2.Ne7+ Kxc7 3.Be5
(d) 1...Rxe6 2.Kb6 tempo R~/Re7,Be7 3.Rxd7/N~
The main lines, (a) and (b) show the Excelsior theme, where a pawn makes all the moves until it promotes and mates. In (a) it even captures on all moves, on a diagonal line, which makes an in other circumstances rude key look appealing. The side variations show different blockades on e7, in (c) by White and in (d) by Black.
The Excelsior theme was first shown by Sam Lloyd himself in a five-mover, where a pawn went all the way from b2 to a8.
____________
If you have no feet, don't walk on fire.
[url=http://www.castlegobs.nl/]Castle Gobs[/url]
Project Lead of the Might and Magic Tribute game
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Nebuka
Promising
Supreme Hero
Save me Jebus!
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posted February 11, 2006 10:35 PM |
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You guys have some more?
I'm stumbled on C1 and C5...
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csarmi
Supreme Hero
gets back
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posted February 11, 2006 11:53 PM |
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Edited by csarmi on 13 Feb 2006
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C7: Kg1, a7, b6, c5, d4, e3, f2 - Ka8, b7, c6, d5, e4
white to play and win
C8: Kf5, a7, b7, f6 - Kf7 : mate in 3 moves
C9: Kg8, a2 - Kg6, a3 : white to play and draw
C1 is a very nice problem, but there is a nasty trick in it
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Ribannah
Hired Hero
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posted February 12, 2006 01:48 PM |
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Let's see ...
Mate in 4 (The Jolly Bard)
____________
If you have no feet, don't walk on fire.
[url=http://www.castlegobs.nl/]Castle Gobs[/url]
Project Lead of the Might and Magic Tribute game
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csarmi
Supreme Hero
gets back
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posted February 13, 2006 12:51 AM |
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Edited by csarmi on 12 Feb 2006
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angelito
Honorable
Undefeatable Hero
proud father of a princess
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posted February 13, 2006 02:04 PM |
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1. Kf1 e3
2. Kg1 e2
3. Kf2 Kh4
4. Kf3#
____________
Better judged by 12 than carried by 6.
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Russ
Promising
Supreme Hero
blah, blah, blah
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posted February 13, 2006 07:08 PM |
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Damn, I was too late for this one. The moment I scrolled down to this puzzle, I saw someone's solution 
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csarmi
Supreme Hero
gets back
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posted February 13, 2006 11:17 PM |
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Edited by csarmi on 13 Feb 2006
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Ok, here are the problems one-by-one now:
Here is C1. Look for the unusual.
That's C4 (if I did not mess up the numbers). The solution is quite logical.
Well, C6 next. Good ideas so far, but not enough. So?
About C7 - it's pretty straightforward, but looks cool.
C8 is a pretty miniature with an amazing solution.
C9 is a classic endgame.
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Ribannah
Hired Hero
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posted February 15, 2006 02:21 AM |
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R3. Mate in 7 (The Jolly Bard)
Seven moves, but really not so complicated, so everyone can have a go.
R4. Helpmate in 3 (The Jolly Bard & John Nunn)
This one is a bit different. A helpmate is where Black begins and helps White to mate him. Both sides have 3 moves here.
Also not too hard, but you have to adjust your thinking.
____________
If you have no feet, don't walk on fire.
[url=http://www.castlegobs.nl/]Castle Gobs[/url]
Project Lead of the Might and Magic Tribute game
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csarmi
Supreme Hero
gets back
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posted February 15, 2006 11:13 AM |
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Edited by csarmi on 1 Mar 2006
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Qb8 - Nb2
Kc3 - 0-0-0
Qb4 - Rd3#
Here is a funny problem:
C10: Kc1, Qa1, Rg1, Rh1, Nf1, Nb1; a3, b2, c3, d2, e3, f4, g3, h2 - Kb5, a4, b3, c4, d3, e4, f5, g4, h3
White to play and win.
The next one is for a famous theme:
C11:
Kb4, Ba5, BB7, Nd8, c7, c6 - Ka7
Mate in two
a, the original diagram
b, remove the c6 pawn
c, further remove the b7 bishop
d, get rid of the other bishop too
... and now for something completely different! - a cylinder chess problem
Kf3, Qf7, Bb4 - Kb8
Mate in 3 moves. (there is a nice thematical solution in 4 moves too!)
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Russ
Promising
Supreme Hero
blah, blah, blah
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posted February 15, 2006 07:58 PM |
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Edited by Russ on 15 Feb 2006
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C1:
Wow! That one is hard!!!
It is impossible to checkmate in 3 moves with just a king and a rook, so sacrifising a pawn is not an option. Moving the king first looks kind of pointless. Making a knight, a bishop, or a rook does not seem to give enough firepower for a checkmate. So, the only option is to make a queen, but I don't see a way of checkmating in 3 even with a queen when black moves to d6.
C4:
1. Qg2 Nc4
2. Qg7 Nb2
3. Qxb2#
(the queen checkmates! who would have thought?  quite logical indeed)
C6:
1. Kb8 Kb6
2. Ka8 Ka6
3. Nb8+ Kb8
4. Nd7+ Kc6
5. Ne5+ Kb6 (if the black king goes after the pawn, white will defend it on b2, eat the black pawns and win)
6. Kb8 Ka6 (same as above)
7. Nc6 Kb6
8. Nxa7 Ka6 (if the black king goes after the pawn, white will defend it on b6)
9. Nc6 Kb6
10. Ne5 Ka6
11. Kc7 ...
(The idea here is to make a knight and screw around with it until it eats the a7 pawn )
C7 (AKA checkmate in 1000 moves ):
1. f3 exf3
2. Kf1 f2
3. e4 dxe4
4. Kxf2 e3+
5. Ke1 e2
6. d5 cxd5
7. Kxe2 d4
8. Kd2 d3
9. c6 bxc6
10. Kxd3 Kb7
11. Kc4 ...
C8:
1. a8N Ke8 (if black moves the other way - move the king instead)
2. Nb6 Kd8
3. b8Q#
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csarmi
Supreme Hero
gets back
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posted February 15, 2006 08:39 PM |
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Edited by csarmi on 15 Feb 2006
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Russ, you forgot an option in C1.
The solution of C4 is incorrect. Qg2 - Nc4 and now you have no way to stop Nd2+.
C7 is incomplete, I'd be interested in the 13th white move.
In C8, a8N does not work because after Nb6 I simply play Kf7...
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Russ
Promising
Supreme Hero
blah, blah, blah
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posted February 15, 2006 10:21 PM |
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Quote:
Russ, you forgot an option in C1.
Well, if white moves the rook, black eats the pawn => no mate in 3.
Moving the king first doesn't seem to help much.
And I think I've listed all the pawn options (I didn't see a way any of those can checkmate).
What did I miss?
Quote:
The solution of C4 is incorrect. Qg2 - Nc4 and now you have no way to stop Nd2+.
Damn, nice puzzle! I have to think more about it.
Quote:
C7 is incomplete, I'd be interested in the 13th white move.
11. ... c5
12. Kd5 c4
13. Kd6 c3
14. a8Q+ Kxa8
15. Kc7 c2
16. b7+ Ka7
17. b8Q+ Ka6
18. Qb6#
Quote:
In C8, a8N does not work because after Nb6 I simply play Kf7...
Oops, my bad, you need a white bishop to prevent this. I didn't think much because it looked too easy
1. a8B Ke8
2. Ke6 Kd8
3. b8Q#
or ... Kf8
2. b8Q+ Kf7
3. Bd5#
What do you need to do in C9, btw? Avoid a loss for white?
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csarmi
Supreme Hero
gets back
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posted February 15, 2006 11:57 PM |
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for C1; the solution is nice and symmetric - and tricky
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Ribannah
Hired Hero
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posted February 16, 2006 12:58 AM |
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And not really fair from Dr. Kraemer.
So maybe this one:
R5. Kh1,Qg7,c6,e7,f2,g3 / Kh3
Mate in two (by L. Kubbel).
____________
If you have no feet, don't walk on fire.
[url=http://www.castlegobs.nl/]Castle Gobs[/url]
Project Lead of the Might and Magic Tribute game
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Nebuka
Promising
Supreme Hero
Save me Jebus!
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posted February 16, 2006 04:38 PM |
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C4) Rd6!
If black eats rook with pawn, then queen at h8, with mate at a1. Black pawn passes on e6 or e5, white rook on d2 then, with mate on a2. Same thing if black knight goes to b7 or c6. But if goes to c4, then white queen eats pawn at b3 with check, and then rook mates at d3.
____________
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Russ
Promising
Supreme Hero
blah, blah, blah
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posted February 16, 2006 05:37 PM |
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C1:
Still too tricky for me
C4:
1. Rd6 exd6 (Nc4 causes Qxb3+, Rd3#)
2. Qh8 b2 (to avoid Qa1#)
3. Qxb2#
C9 (if I understood the objective correctly):
1. Kh8 Kf5
2. Kh7 Ke4
3. Kg6 Kd3
4. ...
As soon as the black king eats the pawn the stalemate is unavoidable.
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