2 movers

Wilfriedva

Only Chess

27 Jan 13

RJHinds

The Near Genius

Fort Gordon

Joined: 24 Jan 11
Moves: 13644

28 Jan 13

-1

Originally posted by ChessPraxis
SOLV'D
I know it isn't a hard problem, I was just happy to have had the chance to play it live in a total lost game with seconds ticking away. 🙂

Okay, I see, you just have to give the King room to avoid the stalemate and bring down the pawn to queen.

ChessPraxis

Cowboy From Hell

American West

Joined: 19 Apr 10
Moves: 55013

28 Jan 13

Originally posted by RJHinds
Okay, I see, you just have to give the King room to avoid the stalemate and bring down the pawn to queen.

Sorry I messed up the first edit, it's white's move. 🙁 Sorry RJ

greenpawn34

e4

Joined: 06 May 08
Moves: 43363

28 Jan 13

An Exuma Problem is any set mate and anything the composer does not
mention you are allowed to use. (it must be legal.)

White to play and mate in 3 you must sac the Rook.

RJHinds

The Near Genius

Fort Gordon

Joined: 24 Jan 11
Moves: 13644

28 Jan 13

6 edits

-1

Originally posted by greenpawn34
An Exuma Problem is any set mate and anything the composer does not
mention you are allowed to use. (it must be legal.)

White to play and mate in 3 you must sac the Rook.

[fen]r5k1/2p2pp1/3p1Pb1/1p1P4/pP3PRQ/P5B1/2P2P2/1K6 w - - 0 1[/fen]

You left one thing out -- the funny counting.

RJHinds

The Near Genius

Fort Gordon

Joined: 24 Jan 11
Moves: 13644

28 Jan 13

-1

Anyone solved this White to mate in 2 yet? If so, post the pgn. I give up.

Paul Leggett

Chess Librarian

The Stacks

Joined: 21 Aug 09
Moves: 114073

28 Jan 13

1 edit

Originally posted by RJHinds
[b]Anyone solved this White to mate in 2 yet? If so, post the pgn. I give up.

[fen]8/4KQ2/8/8/4k3/4P3/1B6/2N5 w - - 0 1[/fen]

(I'm too dumb to get the pgn to work)

The trick is to "pass" and force the king to move to where he has no escape squares from a check after it moves. The king is lured into a mate, not forced into one.

Think about where the black king can move now, and then think about where you can shepherd it so that the second move is a mate.

The correct move is to offer the bishop with 1. Be5. That leaves the black king with only two choices- to capture the bishop on e5 or the pawn on e3.

If 1. ... Kxe5 then 2. Qe6 mates. If instead the black king takes the e3 pawn, then 2. Qf4 mates.

or

RJHinds

The Near Genius

Fort Gordon

Joined: 24 Jan 11
Moves: 13644

28 Jan 13

5 edits

Originally posted by Paul Leggett
(I'm too dumb to get the pgn to work)

The trick is to "pass" and force the king to move to where he has no escape squares from a check after it moves. The king is lured into a mate, not forced into one.

Think about where the black king can move now, and then think about where you can shepherd it so that the second move is a mate.

The correct m ...[text shortened]... ]

or

[fen]8/4KQ2/8/8/4k3/4P3/1B6/2N5 w - - 0 1[/fen]
[pgn]1. ... Be5 2. Kxe3 Qf4[/pgn]

or

Simple now.

greenpawn34

e4

Joined: 06 May 08
Moves: 43363

28 Jan 13

No funny counting this time.

"White to play and mate in 3 you must sac the Rook. "

But I did not say which one.

Paul Leggett

Chess Librarian

The Stacks

Joined: 21 Aug 09
Moves: 114073

28 Jan 13

Originally posted by RJHinds
[pgn]
[FEN "8/4KQ2/8/8/4k3/4P3/1B6/2N5 w - - 0 1"]
1. Be5 Kxe5 2. Qe6#
[/pgn]

or

[pgn]
[FEN "8/4KQ2/8/8/4k3/4P3/1B6/2N5 w - - 0 1"]
1. Be5 Kxe3 2. Qf4#
[/pgn]

Simple now.

Thank you very much!

Grampy Bobby

Boston Lad

USA

Joined: 14 Jul 07
Moves: 43012

28 Jan 13

1

Originally posted by SwissGambit
[hidden]1.Qg7 Kx 2.h6 and stalemate.[/hidden]

Slept on it and, this morning, lights went on.
Positional Suffocation should have been an immediate clue.
Good one, CP. (Thanks, SG)
.

Wilfriedva

Joined: 21 Jan 12
Moves: 3516

28 Jan 13

It seems it isn't clear to everyone but I do give the solution below each problem.
Of course,feel free to discuss them at length 🙂

White mates in 2

morgski

In attack

Joined: 02 Mar 06
Moves: 30226

28 Jan 13

1 edit

Originally posted by SwissGambit
[hidden]1.Qg7 Kx 2.h6 and stalemate.[/hidden]

To the Chess Praxis problem
What happens when 1.Qg7 Kx 2.h6 Ne6?
Surely the pin is then broken and they're forced to take the Rook and stalemate is avoided...?

ChessPraxis

Cowboy From Hell

American West

Joined: 19 Apr 10
Moves: 55013

28 Jan 13

Originally posted by morgski
To the Chess Praxis problem
What happens when 1.Qg7 Kx 2.h6 Ne6?
Surely the pin is then broken and they're forced to take the Rook and stalemate is avoided...?

2.h6 is check, black has to take or get out of check. After which white has no legal moves.

morgski

In attack

Joined: 02 Mar 06
Moves: 30226

28 Jan 13

1 edit

Ah yes, I misread/didn't pay attention and thought the first move was Qxh7...

RJHinds

The Near Genius

Fort Gordon

Joined: 24 Jan 11
Moves: 13644

28 Jan 13

1 edit

Originally posted by greenpawn34
No funny counting this time.

"White to play and mate in 3 you must sac the Rook. "

But I did not say which one.

[pgn]
[FEN "r5k1/2p2pp1/3p1Pb1/1p1P4/pP3PRQ/P5B1/2P2P2/1K6 w - - 0 1"]
1. fxg7 Bh7 2. Qe7 Re8 3. Qxe8[/pgn]

In my first solution, I just sacrified the white rook. Then I thought from your previous solution to the Exuma problem, you must have something tricky in mind, so I edited my solution to sac both rooks. Of course, you know I believe the defender doesn't have to take the rook, since that is not specified. 😏

P.S. However, 3-movers are much easier than 6-movers and there is not enough moves to allow for that funny arithmetic.