View Full Version : Chess Puzzle: White Mates in Two


Deslock
12-15-2005, 12:32 PM
Dunno how many chess players there are here, but attached is a pretty tough puzzle. It's white's turn, and he can mate in two moves.

Feras
12-15-2005, 12:38 PM
rook in a8 to b8
king in c5 to b5
maybe?

spr grn8
12-15-2005, 12:38 PM
white: pawn c-6 to b-6
Black: pawn a-7 to b-6 takes pawn, check
white: King to b-6 Mate!

lurch519
12-15-2005, 12:41 PM
kinda hard to solve as we dont know which end of the board is whites and which is blacks

Feras
12-15-2005, 12:45 PM
how bout this move the classic knight jumps queen, bishop jumps queen, pawns jump queen, gangbang!

dtorre
12-15-2005, 12:47 PM
White: King C3
Black: King B6
White: Rook B8

easy

Photic
12-15-2005, 12:50 PM
My bad, that is a king isn't it.

Feras
12-15-2005, 12:50 PM
i think white is moving up black is moving down. dtorre how is the white king moving from c5 to c3?

Luftwaffle
12-15-2005, 12:56 PM
We're playing flying kings?

Deslock
12-15-2005, 12:58 PM
In puzzles like this, white's pawns are advancing upwards. Don't worry about "official" chess notation, as long as you write something descriptive. For instance, this works:

white moves pawn c6 to c7
black moves pawn b5 to b4
(but it's not the correct solution)

Asmoran
12-15-2005, 01:04 PM
White: Rook to B8
Black: Pawn to B4
White: Rook to B6

Celronx
12-15-2005, 01:06 PM
I can only get it in 3 moves. What's the answer?

Feras
12-15-2005, 01:06 PM
White: Rook to B8
Black: Pawn to B4
White: Rook to B6
if i was black the better move is king to a5 king takes pawn.

Feras
12-15-2005, 01:11 PM
hows about this
white: king to b4
black: (black has no move at this point) pawns can't move and if king moves into either open square he gets taken by a pawn. (does this count?)

is this one move or two? i never play eletronic chess with numbers and letters

Asmoran
12-15-2005, 01:12 PM
ah, yeah. Missed that about the pawn.

Your solution results in a stalemate, so considering deslock's twisted logic, you've got the answer ;).

stalemate

he never specified the type of mate.

Steakboy42
12-15-2005, 01:19 PM
Answer:
white pawn in C6 to C7
black pawn in B5 to B4
White Pawn in C7 to C8, changes to queen or bishop checkmate

-Steakboy

Feras
12-15-2005, 01:20 PM
wooo go me! but im still looking for a checkmate answer.

Asmoran
12-15-2005, 01:20 PM
Answer:
white pawn in C6 to C7
black pawn in B5 to B4
White Pawn in C7 to C8, changes to queen or bishop checkmate

-Steakboy
not checkmate - black king takes white pawn @ a5

Deslock
12-15-2005, 01:24 PM
Your solution results in a stalemate, so considering deslock's twisted logic, you've got the answer ;).

stalemate

he never specified the type of mate.LOL. White can produce a stalemate in one move, I believe:

King to B4

The question is how does white get a checkmate in 2 moves! (3 moves is easy) This is a very tricky puzzle... it's not nearly as straight forward as the previous ones I posted. No one has come up with the correct answer yet, so here's a hint:

Advancing the pawn from c6 to c7 does not lead to a solution because Black can move b5 to b4. If White's next move is to a8 x a7, the Black king can then capture the White rook (a6 x a7). If White moves to c8, the Black king captures the White pawn (a6 x a5).

I already have my next puzzle ready to go for after this one is solved :mdrmed:

Celronx
12-15-2005, 01:27 PM
Ok, I've got 2 (2) move mates. One would require you to be playing against a moron, the other depends on the rules you play.

1st
White : Pawn to c7, or Pawn to d6
Black : King to a5
White : Rook to a7

This one requires the moron because anyone who could thing about the next move wouldn't take the pawn at a5 on that move.

2nd
White : Rook to b8
Black : King to a5
White : King to b5

This one you move yourself into check, but it's covered by the rook....not really correct by the rules I always play by.

Asmoran
12-15-2005, 01:27 PM
No fair changing the question!
:pfanndina :pfanndina :pfanndina

And I know white could stalemate in 1, but the question specified 2 :P

Asmoran
12-15-2005, 01:29 PM
2nd
White : Rook to b8
Black : King to a5
White : King to b5

This one you move yourself into check, but it's covered by the rook....not really correct by the rules I always play by.
Yeah, that one isn't legal

Celronx
12-15-2005, 01:31 PM
^
I agree, but you never know..........

Feras
12-15-2005, 01:39 PM
white: a8 to b8
black: if a6-a5 then white b8-b5
if b5-b4 then white b8-b6

i figured its the same move for white #2 just different length of movement based on black.

Asmoran
12-15-2005, 01:41 PM
if a6-a5 then white b8-b5


That doesn't initiate checkmate. Black king can go to either a6 or a4 to get out of check.

Feras
12-15-2005, 01:44 PM
That doesn't initiate checkmate. Black king can go to either a6 or a4 to get out of check.
damn you're right sigh

blue flash
12-15-2005, 01:50 PM
check mate in 2 moves can't be done sorry try arain.

Asmoran
12-15-2005, 01:56 PM
I have to agree. I think feras and I hit on the correct answer in posts 14 and 15

Deslock
12-15-2005, 01:57 PM
check mate in 2 moves can't be done sorry try arain.Yes it can. But it's very tricky... only an observant player with a thorough understanding of the game has a chance at figuring this one out.

blue flash
12-15-2005, 02:04 PM
i play chess alll the time and you can't get checkmate in 2 moves .if u are thinking of using the rook you can't because the white king would be in check .

Asmoran
12-15-2005, 02:05 PM
White: C6 to C7
Let's say the black player is aggressive, and he goes A6 to B7 to threaten the rook.
White: C7 to C8, swap with Queen - checkmate


But again, that would be a pretty stupid move on black's part.

Asmoran
12-15-2005, 02:09 PM
Actually, I think that's it:
White: C6 to C7
Black has 3 moves:
1) A6 to B7
2) A6 to B5
3) B5 to B4

Case 1) C7 to C8, swap with queen, checkmate
Case 2) A8 to A7, checkmate
Case 3) Ignore the pawn, C7 to C8, swap with queen, checkmate

Asmoran
12-15-2005, 02:10 PM
Doh, nvm - case 3 is flawed

Asmoran
12-15-2005, 02:11 PM
Okay, I really give up this time. (I've told myself that like 7 times now, lol)

Let's hear it.

Deslock
12-15-2005, 02:17 PM
Sorry Asmoran, that's not it (nice try though).

blue flash, there is a solution, but again it's very tricky and only an observant player with a thorough understanding of the game has a chance at figuring it out.

Once the solution is posted, I anticipate I'll be getting those death threats I mentioned (http://www.rx8club.com/showthread.php?t=78675).

:Kill1:

blue flash
12-15-2005, 02:18 PM
3 moves it the closest you can do it.no stalemate, checkmate in 3.i know how to play and play very well .i beat 50%of my opponents in 4 moves . :fingersx:

xr2
12-15-2005, 02:25 PM
White: C6 to C7

if
Black:b5- b4 white: c7-c8 Queen
black:a6-b7 white: c7-c8 Queen
black a6-a5 white: a8-a7

staticlag
12-15-2005, 02:28 PM
Got it.

En passant.

a5-b6 white pawn takes black pawn.
a6-a5 black king forced move
a8-a7 white rook takes black pawn, Mate!

Steakboy42
12-15-2005, 02:32 PM
Got it.

En passant.

a5-b6 white pawn takes black pawn.
a6-a5 black king forced move
a8-a7 white rook takes black pawn, Mate!

black pawn is in b5, not b6, sorry

-steakboy

blue flash
12-15-2005, 02:32 PM
this is your answer but it is wrong!!rook to b8 then king to b5 checkmate .but the king cannot move into to check so the game continues.

trickshot
12-15-2005, 02:34 PM
Got it.

En passant.

a5-b6 white pawn takes black pawn.
a6-a5 black king forced move
a8-a7 white rook takes black pawn, Mate!
Well done!! :bowdown:

Asmoran
12-15-2005, 02:35 PM
Ah dang. I thought that pawn was too far down for that.....

Deslock
12-15-2005, 02:37 PM
ding ding ding! staticlag got it. Here's the explanation:

There is no solution unless you think about the most recent move by Black that led to the current positions. The only move Black could have made to result in the current board is Black's pawn from B7 to B5. Thus White's first move is pawn from A5 to B6 (legal because of en passant). Black must move A6 to A5. White moves A8 to A7, capturing the pawn and mate.

Steakboy42
12-15-2005, 02:40 PM
I did not know that rule...

-Steakboy

xr2
12-15-2005, 02:40 PM
Sorry I'm not very good a chess, but can someone please tell me where my solution falls apart?

White: C6 to C7

if
Black:b5- b4 white: c7-c8 Queen
black:a6-b7 white: c7-c8 Queen
black a6-a5 white: a8-a7

Asmoran
12-15-2005, 02:41 PM
^ The black king can take the white pawn and move out of checkmate

xr2
12-15-2005, 02:43 PM
^ The black king can take the white pawn and move out of checkmate

Of course I account for it in once case, but not another. This is why I'm not very good at chess.

Thanks.

blue flash
12-15-2005, 02:47 PM
you have the pawn moving in the wrong direction look @howthe board is set up white is in the right corner and white starts at the bottom of the board.

Steakboy42
12-15-2005, 02:49 PM
I dont someone can explain the rules of en passant for me?

-Steakboy

staticlag
12-15-2005, 02:57 PM
I dont someone can explain the rules of en passant for me?

-Steakboy

Look under the piece pawn, they have a good visual explanation.
http://www.chessvariants.com/d.chess/chess.html

Steakboy42
12-15-2005, 02:59 PM
Makes total sense. Thank you, you just furthered my knowledge of the game of chess.

-Steakboy

xr2
12-15-2005, 03:00 PM
I dont someone can explain the rules of en passant for me?

-Steakboy

Sorry if this doesn't make sense, I'll try.

First, En Passant means "In Passing". You know how a pawn on it's first move can move 2 squares forward instead of one. What a pawn does move two squares, if on the very next move, and only on the next move, if the opponent has a pawn that could have taken the pawn that just double moved if it only moved one square, it may do so.

This may do better: http://en.wikipedia.org/wiki/En_passant

lshu
12-15-2005, 03:11 PM
Damn! I already was thinking about en passant in my solution but I got it all wrong. I thought the black piece b5 takes white a5. Got it backwards!! :crazy:

Deslock
12-15-2005, 03:11 PM
Here's another explanation of en passant (similar to the wikipedia one):
http://www.chessclub.com/resources/rules/Prise-En-Passant.html

Also, the next rx8club lounge puzzle is up:
http://www.rx8club.com/showthread.php?p=1161429

Altair4
12-15-2005, 05:07 PM
White Pawn c6 to c7
if Black King takes pawn a5
Rook takes pawn a7 checkmate

if Black Pawn to b4
Pawn to c8 (Queen or Bishop) checkmate

blue flash
12-15-2005, 05:08 PM
sorry but you still don't have check mate .please try again.nice ruling on the en-passant never knew that 1.