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ohforfsake
Promising
Legendary Hero
Initiate
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posted December 16, 2009 02:33 PM |
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Hi
I went home for christmas some time ago, where I have had a other priorities than usually. Therefore, as the quiz' unfortunaly have been held at a bad timing for me, I have not had the ressources to be participating.
I'll probably, at some later time, have the possible net visiting higher up in my list of priorities once again and can do more than just the occasional lourking around.
Merry christmas everyone and so far thanks for the thread Keldorn, it has really been a pleasure to both read and participate in.
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Only 2 participants is terrible  .
[Sorry for OT]
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Living time backwards
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keldorn
Promising
Known Hero
that casts green flames
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posted December 17, 2009 08:22 PM |
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Edited by keldorn at 20:24, 17 Dec 2009.
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While I'm preparing the next quiz (this time only 4-5 puzzles at a time), I brought you a very interesting study composed by Sam Lloyd, which is one of the most amazing, brilliant and possibly the most difficult problem ever seen in the world of chess.
This problem is so difficult that it requires a whole community to be solved, so this time, let's forget HCM so that we can share our ideas, correct them or give advice/analysis of other's thoughts.
Here we go, white to move and mate in 3.
Good luck.
EDIT: please ignore the highlighted h2 square, I just left the cursor there before making the pic.
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ohforfsake
Promising
Legendary Hero
Initiate
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posted December 18, 2009 12:22 AM |
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Since you claim the problem to be very difficult and since I have not used many pieces in my idea of a solution, I am probably wrong, but anyway it is a start [I understand we're not supposed to use hcm, but write here this time, right?]
Bxe8 check
Black king can only move to two squares, so we take them one at a time, from here it must be mate in 2.
Kxe4
Bg6 check - Kd4
Now if I am not mistaken, simply moving the rook at f6, keeping it in the f line would be a mate? So something like Rf7 checkmate. All in all:
Bxe8 check - Kxe4
Bg6 check - Kd4
Rf7 checkmate
Second scenario is where the king refuses to take the knight and in stead of moves directly to d4
Kd4
Now the knight is hindering the check at g6, but how about Rf4 check, blocking black bishop and guarding white knight at e4
At which black can only move Kd3 and here I think Bb5 mates.
So
Bxe8 check - Kd4
Rf4 check - Kd3
Bb5 checkmate
Or maybe I have missed something? Anyway, nice puzzle as always. 
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Living time backwards
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TheDeath
Responsible
Undefeatable Hero
with serious business
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posted December 18, 2009 12:46 AM |
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Quote:
Bb5 checkmate
can't the king go to C2?
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TheDeath
Responsible
Undefeatable Hero
with serious business
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posted December 18, 2009 12:57 AM |
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Edited by TheDeath at 01:03, 18 Dec 2009.
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what about mate in 2?
Bb5-c6+
Ke5-d4
Rf6-f3++
EDIT: actually black can then do Pe6-e5.
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ihor
Supreme Hero
Accidental Hero
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posted December 18, 2009 08:31 AM |
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Bd3+ Kd4
Rf3
1)e6-e5 -> Rd5# - Rook is covered by knight, not bishop - that is idea first move is Bd3, not Bc6.
2)Be5 -> Bxe5# - white bishop is covered from black's rook by that pawn.
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keldorn
Promising
Known Hero
that casts green flames
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posted December 18, 2009 02:07 PM |
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Quote:
Bd3+ Kd4
Rf3
1)e6-e5 -> Rd5# - Rook is covered by knight, not bishop - that is idea first move is Bd3, not Bc6.
2)Be5 -> Bxe5# - white bishop is covered from black's rook by that pawn.
1) e6-e5 Rd5+?? Bxd5
Quote:
So
Bxe8 check - Kd4
Rf4 check - Kd3
Bb5 checkmate
Bxe8+ Kd4
Rf4+ e5!! and there's no mate.
Anyway, keep trying  we're definitely on a good way.
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TheDeath
Responsible
Undefeatable Hero
with serious business
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posted December 18, 2009 06:04 PM |
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Bb5-a4?
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keldorn
Promising
Known Hero
that casts green flames
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posted December 18, 2009 07:31 PM |
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Well, what are your ideas about that?
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TheDeath
Responsible
Undefeatable Hero
with serious business
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posted December 18, 2009 08:00 PM |
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Edited by TheDeath at 20:02, 18 Dec 2009.
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My thoughts:
Bb5-a4+
Case 1:
Ke5-e4
Rf6xe6+
Kd4-d3
Ra5-d5++ 
Case 2:
Ke5xe4
Ba4-c2+
Ke4-d4
Rf6-f4++
I prolly missed something.
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keldorn
Promising
Known Hero
that casts green flames
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posted December 18, 2009 08:47 PM |
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Well, I analysed 1.Ba4+ but it is only a mate in 4 instead of 3.
Ba4+ Kd4
Nc5 cxd2
Rf3+ e5
Rd3#
Not too bad, but the difficulty of this puzzle is based on the fact that it is a mate in 3.
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TheDeath
Responsible
Undefeatable Hero
with serious business
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posted December 19, 2009 07:08 PM |
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Is this a helpmate puzzle, cause I don't see any solution at all with normal play
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keldorn
Promising
Known Hero
that casts green flames
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posted December 20, 2009 12:35 PM |
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No, it's absolutely normal, altough the moves you need are far from normal
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keldorn
Promising
Known Hero
that casts green flames
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posted December 20, 2009 07:04 PM |
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The first part of quiz 3 is ready, so let me show it.
I. Mate in X
2 points for all.
Bonus puzzles for the I. topic
First, if you have some extra time to solve my previous mate in 3, it worths +2(!).
Second, I've prepared something interesting for +1 points.
Here it is white to move and mate. You have to find the shortest mate possible. How many moves are needed and what are these moves?
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netserk
Tavern Dweller
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posted December 21, 2009 10:34 PM |
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For the bonus puzzle
If black's last move was b7-b5, then an en passant should be possible with a5-b6, which will put a checkmate on black, since it can't move c7-b6 because of the rook.
I know that this requires the above mentioned move, but you said 'the shortest mate possible', which this is.
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keldorn
Promising
Known Hero
that casts green flames
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posted December 29, 2009 09:54 AM |
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I see there was a long break in this topic, probably because of Christmas, so let's go on from where we stopped.
Yes, Netserk that's correct answer. All the pieces are stalemated for black except for that pawn, so his last move was either b5. But did it come from b6 or b7?
Well, it couldn't have come from b6, because then the white king whould have been in check, so it must have been white to move. But it was black to move, so the move was b7-b5, so axb6ep# is a mate in 1.
BTW, how are you doing whith the above puzzles? Because the next section is ready.
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Ecoris
Promising
Supreme Hero
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posted December 30, 2009 05:49 PM |
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I've been away for a week or so and with new year around I won't have time to look at the puzzles until January 5th or 6th.
Happy New Year everyone.
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keldorn
Promising
Known Hero
that casts green flames
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posted December 30, 2009 07:58 PM |
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Yeah, I thought that the lack of time is the source of the problem. No pro, I'm also going away for 3 days tomorrow, so Happy New Year
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dimis
Responsible
Supreme Hero
Digitally signed by FoG
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posted March 17, 2010 10:11 PM |
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dimis
Responsible
Supreme Hero
Digitally signed by FoG
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posted April 30, 2010 09:22 PM |
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Topalov - Anand
Hey,
Do you guys follow their games these days ?
chessdom.com
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