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| Thread: Chess courses with pics! |  This thread is pages long: 1 ... 4 5 6 7 8 ... 10 20 30 · «PREV / NEXT» |
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Doomforge
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posted August 04, 2008 03:19 PM |
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you lose the equivalent of 8 pawns and your opponent loses 6. Not a good trade 
The way I rate the pieces:
Knight = 3 pawns
Bishop = 3 pawns
Rook = 5 pawns
Queen = 9 pawns
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Asheera
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Elite Assassin
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posted August 04, 2008 03:20 PM |
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Quote:
you lose the equivalent of 8 pawns and your opponent loses 6. Not a good trade
Sometimes it is, it depends on the situation
But in general it's not a good trade, I agree
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keldorn
Promising
Known Hero
that casts green flames
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posted August 05, 2008 08:56 AM |
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Hi.
I'm back with an interesting exercise. Not too difficult, but interesting
Balck to move and checkmate in 2. Not too hard IMO. Good luck.
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Doomforge
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posted August 05, 2008 09:24 AM |
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indeed very easy!
e4 c3 +
b1 a1
g8 x a2 ++
Took me 5 seconds, hope next one will be much harder 
Just DLed chessmaster 11, btw.
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Lexxan
Honorable
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Unimpressed by your logic
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posted August 05, 2008 09:48 AM |
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But can't white attack your Knight with his pawn/queen then ?
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Coincidence? I think not!!!!
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keldorn
Promising
Known Hero
that casts green flames
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posted August 05, 2008 09:50 AM |
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Edited by keldorn at 09:50, 05 Aug 2008.
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Excellent.
OK, the explanation, perhaps needed for others.
Note that the black bishop has a discovered check wherever the knight moves. But here we need double-check. Otherwise the white knight could capture our bishop, with his own check. But if you deliver 2 checks at the same time, the king must get out of both. (as if you take one of the attackers, the other will still be checking the king, so every capture moves are illegal)
King to a1-only move.
And now the queen can deliver mate.
Nice work. Will post another soon.
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Doomforge
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Retired Hero
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posted August 05, 2008 10:44 AM |
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Don't know if I'll be online when you post it, gotta reformat all my drives (1100 GB in total) and set to RAID 0 again (too many bad sectors TT). Will take a while 
So good luck guys
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keldorn
Promising
Known Hero
that casts green flames
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posted August 05, 2008 12:27 PM |
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The next problem is based on a very famous endgame position. The main objectve for white of course, is to promote its pawn and win. But how? If the rook moves, black will devour the pawn. This is a special type of pin. Black is pinning your rook. How do you break this pin? White to move and achieve a winning position.
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homm3megejas
Adventuring Hero
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posted August 05, 2008 01:05 PM |
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Too easy. 1.Rh8! Rb7* 2.Rh7+ K~ 3.Rb7*, white has a extra rook and easily wins. If black rook try to check white king, he just diagonally, moves next to him and chases away, example: 1. ... Rb2+ 2.Kf3 Bb3+ 3.Ke4 Bb4+ 4.Kd5 Bb5+ 5.Kc6 and black rook must run away. If black moves with king, or ~, white do 2.b8Q an with extra queen wins, if black try 2. ... Rb8*, then 3.Rb8* and white still left with a rook. It's very typical position, in this situation black (if they could move) will go 1. ... Kg7 and force a draw .
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TheDeath
Responsible
Undefeatable Hero
with serious business
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posted August 05, 2008 04:06 PM |
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Edited by TheDeath at 16:07, 05 Aug 2008.
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Move the King?
This really puts me to think...
@Doomforge:Quote:
gotta reformat all my drives (1100 GB in total)
And I don't know what to do with my 160 GB 
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The above post is subject to SIRIOUSness.
No jokes were harmed during the making of this signature.
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Asheera
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posted August 05, 2008 07:42 PM |
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Edited by Asheera at 19:46, 05 Aug 2008.
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Quote:
Too easy. 1.Rh8! Rb7*
Why black has to eat the pawn? He could move the king: f7-g7 and then White is screwed (will lose the pawn)
I'll say that White has to move the king... it won't be a short answer
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TheDeath
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with serious business
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posted August 05, 2008 07:54 PM |
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Quote:
Why black has to eat the pawn? He could move the king: f7-g7 and then White is screwed (will lose the pawn)
Yeah but then White will promote the pawn into a Queen, Black will be forced to take the Queen, and White will take Black's Rook
But Black can still check the white king instead...
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The above post is subject to SIRIOUSness.
No jokes were harmed during the making of this signature.
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Asheera
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posted August 05, 2008 08:09 PM |
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Edited by Asheera at 20:49, 05 Aug 2008.
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Quote:
Yeah but then White will promote the pawn into a Queen, Black will be forced to take the Queen, and White will take Black's Rook
Hmm, it seems it's the same "loss" after all
Quote:
But Black can still check the white king instead...
I don't think checking the white king solves anything though
And there IS possible to deliver a mate with only one rook.
Example:
8 - - - - - - - k
7 - - - R - - - -
6 - - - - - - K -
5 - - - - - - - -
4 - - - - - - - -
3 - - - - - - - -
2 - - - - - - - -
1 - - - - - - - -
A B C D E F G H
It's white's turn and he does a d7-d8# move
R - White Rook
K - White King
k - Black King
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Doomforge
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Retired Hero
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posted August 05, 2008 09:35 PM |
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Quote:
And I don't know what to do with my 160 GB
well each disc added to RAID 0 speeds up things, so the more you have, the faster they work
As for the recent puzzle: Since I know the answer (It's covered in one of the chess books I have), I won't participate
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homm3megejas
Adventuring Hero
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posted August 07, 2008 01:04 PM |
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When will be the next puzzle?
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keldorn
Promising
Known Hero
that casts green flames
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posted August 08, 2008 02:17 PM |
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Edited by keldorn at 14:26, 08 Aug 2008.
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Right now .
(I had some problems with my net again, but it's now fixed.)
A simple one to re-warm-up you all
Black to move. We need a fork. Study the whole board.
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homm3megejas
Adventuring Hero
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posted August 08, 2008 03:35 PM |
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Good to know , my answer: 1. ... Qa5+ 2.K~(Nd2, c3, Rc3, Qd2, white must defend a king) Qh5* black wins a knight. If 2.Qc3! (tricky), then 2. ... Bb4 and 3. ... Bc3* black wins a queen for a bishop (white queen can't run away, because this will open a check for white king in e1). Also black can't after 2.Qc3 go 2. ... Qh5*, because 3.Qg7* and white wins .
King in the centre means problems (often), so try O-O or O-O-O to do early.
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keldorn
Promising
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that casts green flames
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posted August 08, 2008 03:51 PM |
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White won't play Qc3 he's not silly
But the first idea is good! Queen to a5 check, and after the king moves, black grabs the unprotected knight on the opposite side of the board.
This could have been a bit difficult as you needed to examine the entire setup. Nice work!
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keldorn
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Known Hero
that casts green flames
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posted August 09, 2008 10:32 AM |
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Here is the next. Be careful, this one is a bit harder.
White to move and win.
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Doomforge
Admirable
Undefeatable Hero
Retired Hero
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posted August 09, 2008 10:38 AM |
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Hey, back to the game
b3 x g8+
f8 x g8
h1 h8 ++
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