Bsrgvty

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Find the percentage

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Tht Aain’t Right… #2

Forced selfmate in n-movesCheckmate all the kings #4Copycat Chess, AgainFantastic Foxhole FailuresFind Those Chess Notations! #2Find Those Chess Notations! #4That Ain’t Rght… 1# (Definitely!)That Ain’t Right… #3The Not So Knights ChallengeA “Simple” Task

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14

2

$begingroup$

I already have another, probably very easy, for you all again!

---

Task: State the rule/s that you believe are being broken based on the position and/or what clues I have/you think are being given. You must also use this rule to complete the given game.

The Position:

What To Do: Find four ways for white to checkmate black in one move. It is white to move, of course.

chess retrograde-analysis

share|improve this question

edited Apr 17 at 3:40

Rewan Demontay

asked Apr 17 at 3:33

Rewan DemontayRewan Demontay

2,60611 gold badge44 silver badges3232 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Your best puzzle so far IMO. Very well done!
  $endgroup$
  – Brandon_J
  Apr 17 at 17:30
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Thanks! But why this one in particular?
  $endgroup$
  – Rewan Demontay
  Apr 17 at 17:33
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  1. It's very clear and straightforward. 2. The correct answer doesn't use any sort of cheesy loopholes and there is only one correct answer. 3. The correct answer also relates to the title in a clever way that verifies the solution.
  $endgroup$
  – Brandon_J
  Apr 17 at 17:40
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  Not that your other puzzles have not done these things, but I feel that this one is exemplary of the above traits.
  $endgroup$
  – Brandon_J
  Apr 17 at 17:40
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  I agree there!!!
  $endgroup$
  – Rewan Demontay
  Apr 17 at 17:42
  

  
  
  
  

 | 
show 2 more comments

14

2

$begingroup$

I already have another, probably very easy, for you all again!

---

Task: State the rule/s that you believe are being broken based on the position and/or what clues I have/you think are being given. You must also use this rule to complete the given game.

The Position:

What To Do: Find four ways for white to checkmate black in one move. It is white to move, of course.

chess retrograde-analysis

share|improve this question

edited Apr 17 at 3:40

Rewan Demontay

asked Apr 17 at 3:33

Rewan DemontayRewan Demontay

2,60611 gold badge44 silver badges3232 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Your best puzzle so far IMO. Very well done!
  $endgroup$
  – Brandon_J
  Apr 17 at 17:30
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Thanks! But why this one in particular?
  $endgroup$
  – Rewan Demontay
  Apr 17 at 17:33
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  1. It's very clear and straightforward. 2. The correct answer doesn't use any sort of cheesy loopholes and there is only one correct answer. 3. The correct answer also relates to the title in a clever way that verifies the solution.
  $endgroup$
  – Brandon_J
  Apr 17 at 17:40
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  Not that your other puzzles have not done these things, but I feel that this one is exemplary of the above traits.
  $endgroup$
  – Brandon_J
  Apr 17 at 17:40
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  I agree there!!!
  $endgroup$
  – Rewan Demontay
  Apr 17 at 17:42
  

  
  
  
  

 | 
show 2 more comments

$begingroup$

I already have another, probably very easy, for you all again!

---

Task: State the rule/s that you believe are being broken based on the position and/or what clues I have/you think are being given. You must also use this rule to complete the given game.

The Position:

What To Do: Find four ways for white to checkmate black in one move. It is white to move, of course.

chess retrograde-analysis

share|improve this question

edited Apr 17 at 3:40

Rewan Demontay

asked Apr 17 at 3:33

Rewan DemontayRewan Demontay

2,60611 gold badge44 silver badges3232 bronze badges

$endgroup$

share|improve this question

edited Apr 17 at 3:40

Rewan Demontay

asked Apr 17 at 3:33

Rewan DemontayRewan Demontay

2,60611 gold badge44 silver badges3232 bronze badges

share|improve this question

edited Apr 17 at 3:40

Rewan Demontay

asked Apr 17 at 3:33

Rewan DemontayRewan Demontay

2,60611 gold badge44 silver badges3232 bronze badges

asked Apr 17 at 3:33

Rewan DemontayRewan Demontay

2,60611 gold badge44 silver badges3232 bronze badges

asked Apr 17 at 3:33

Rewan DemontayRewan Demontay

2,60611 gold badge44 silver badges3232 bronze badges

4 Answers
4

active

oldest

votes

12

$begingroup$

I suspect the broken rule is

jumping over one's own pieces.

Allowing the checkmates

Qh5# or Qh4# or Rh3# or Rh2#

A hint pointing to this answer:

The title is "Tht Aain't right". Notice how the "a" has jumped over other letters in order to move to the right.

share|improve this answer

answered Apr 17 at 5:05

jafejafe

36.3k55 gold badges101101 silver badges361361 bronze badges

$endgroup$

add a comment
 | 

8

$begingroup$

It might be

cylindrical chess

so

the h- and a-file are connected, and you can mate with Qb4-h4, Qb4-h2, Rc3-h3 and Rd2-h2.

This fits the clue in the title insofar that

the 'a'-file lies to the right of the 'h'-file.

share|improve this answer

edited Apr 17 at 6:28

answered Apr 17 at 5:59

GlorfindelGlorfindel

17.8k55 gold badges6565 silver badges9999 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  +1 for an interesting idea!
  $endgroup$
  – Rewan Demontay
  Apr 17 at 12:45
  

  
  
  
  


• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  $begingroup$
  This would lead to at least 7 mates, not 4.
  $endgroup$
  – Arnaud Mortier
  Apr 17 at 15:40
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Did I really miss three additional mates? I still can't see them ...
  $endgroup$
  – Glorfindel
  Apr 17 at 15:43
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  There would be additional Q moves, wrapping around along diagonals as well as straight across ranks. (Meta: is it possible to put spoiler tags in comments?)
  $endgroup$
  – CJM
  Apr 17 at 19:05
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  @ArnaudMortier Note that the Qa5 can't move to give check without allowing the black king to escape to the a file
  $endgroup$
  – isaacg
  Apr 17 at 19:06
  

  
  
  
  

 | 
show 2 more comments

3

$begingroup$

Maybe:

Rule:

The towers move like bishops.

So:

Checkmates:

Qa5-f5 # or Qb4-e4 # or Qb4-b1 # or Pg5-g6 #

Because:

Hints:

The third letter of the first word goes to the second letter of the second word (diagonally). The first word begins with T(ower), and does not move to the 'right', but moves as 'aa', letter one plus letter one, letter two, (B)ishop.

share|improve this answer

edited Apr 17 at 10:30

jafe

36.3k55 gold badges101101 silver badges361361 bronze badges

answered Apr 17 at 10:26

HermesHermes

65511 silver badge1111 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Closr, but not quite!
  $endgroup$
  – Rewan Demontay
  Apr 17 at 11:02
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  The towers are both on black tiles, which is also a reason your rule can't work out.
  $endgroup$
  – Gust van de Wal
  Apr 17 at 20:39
  

  
  
  
  

add a comment
 | 

2

$begingroup$

I believe the rules being broken are that

the board is not described traditionally, with the ranks described with letters and the files described with numbers

and

the board was set up with a black square in the bottom right hand corner (1a in this game's notation) rather than white as it should be.

This leads to checkmate by

promoting any of the white pawns to a rook or queen.

share|improve this answer

answered Apr 18 at 14:51

AlchymistAlchymist

16122 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  +1 for a nice idea, altough that would be legal moves, not illegal as this puzzis about!
  $endgroup$
  – Rewan Demontay
  Apr 18 at 15:41
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  @RewanDemontay Thank you for your acknowledgement although, to be pedantic, the puzzle doesn't state that the moves are invalid, just that at least one rule is being broken. The layout at the start of the game is a rule of chess. If I'm going to be ultrapedantic, you ask which rule/s are being broken rather than ones which will be broken by the next move. I could also offer the suggestion that the 'A'; has moved
  $endgroup$
  – Alchymist
  Apr 23 at 14:39
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Actually, the squares are labeled in the picture.
  $endgroup$
  – Rewan Demontay
  Apr 23 at 14:42
  

  
  
  
  

add a comment
 | 

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12

$begingroup$

I suspect the broken rule is

jumping over one's own pieces.

Allowing the checkmates

Qh5# or Qh4# or Rh3# or Rh2#

A hint pointing to this answer:

The title is "Tht Aain't right". Notice how the "a" has jumped over other letters in order to move to the right.

share|improve this answer

answered Apr 17 at 5:05

jafejafe

36.3k55 gold badges101101 silver badges361361 bronze badges

$endgroup$

add a comment
 | 

12

$begingroup$

I suspect the broken rule is

jumping over one's own pieces.

Allowing the checkmates

Qh5# or Qh4# or Rh3# or Rh2#

A hint pointing to this answer:

The title is "Tht Aain't right". Notice how the "a" has jumped over other letters in order to move to the right.

share|improve this answer

answered Apr 17 at 5:05

jafejafe

36.3k55 gold badges101101 silver badges361361 bronze badges

$endgroup$

add a comment
 | 

$begingroup$

I suspect the broken rule is

jumping over one's own pieces.

Allowing the checkmates

Qh5# or Qh4# or Rh3# or Rh2#

A hint pointing to this answer:

The title is "Tht Aain't right". Notice how the "a" has jumped over other letters in order to move to the right.

share|improve this answer

answered Apr 17 at 5:05

jafejafe

36.3k55 gold badges101101 silver badges361361 bronze badges

$endgroup$

share|improve this answer

answered Apr 17 at 5:05

jafejafe

36.3k55 gold badges101101 silver badges361361 bronze badges

answered Apr 17 at 5:05

jafejafe

36.3k55 gold badges101101 silver badges361361 bronze badges

answered Apr 17 at 5:05

jafejafe

36.3k55 gold badges101101 silver badges361361 bronze badges

8

$begingroup$

It might be

cylindrical chess

so

the h- and a-file are connected, and you can mate with Qb4-h4, Qb4-h2, Rc3-h3 and Rd2-h2.

This fits the clue in the title insofar that

the 'a'-file lies to the right of the 'h'-file.

share|improve this answer

edited Apr 17 at 6:28

answered Apr 17 at 5:59

GlorfindelGlorfindel

17.8k55 gold badges6565 silver badges9999 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  +1 for an interesting idea!
  $endgroup$
  – Rewan Demontay
  Apr 17 at 12:45
  

  
  
  
  


• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  $begingroup$
  This would lead to at least 7 mates, not 4.
  $endgroup$
  – Arnaud Mortier
  Apr 17 at 15:40
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Did I really miss three additional mates? I still can't see them ...
  $endgroup$
  – Glorfindel
  Apr 17 at 15:43
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  There would be additional Q moves, wrapping around along diagonals as well as straight across ranks. (Meta: is it possible to put spoiler tags in comments?)
  $endgroup$
  – CJM
  Apr 17 at 19:05
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  @ArnaudMortier Note that the Qa5 can't move to give check without allowing the black king to escape to the a file
  $endgroup$
  – isaacg
  Apr 17 at 19:06
  

  
  
  
  

 | 
show 2 more comments

8

$begingroup$

It might be

cylindrical chess

so

the h- and a-file are connected, and you can mate with Qb4-h4, Qb4-h2, Rc3-h3 and Rd2-h2.

This fits the clue in the title insofar that

the 'a'-file lies to the right of the 'h'-file.

share|improve this answer

edited Apr 17 at 6:28

answered Apr 17 at 5:59

GlorfindelGlorfindel

17.8k55 gold badges6565 silver badges9999 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  +1 for an interesting idea!
  $endgroup$
  – Rewan Demontay
  Apr 17 at 12:45
  

  
  
  
  


• 
  
  
  

  
  3
  

  
  
  
  
  
  

  
  $begingroup$
  This would lead to at least 7 mates, not 4.
  $endgroup$
  – Arnaud Mortier
  Apr 17 at 15:40
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Did I really miss three additional mates? I still can't see them ...
  $endgroup$
  – Glorfindel
  Apr 17 at 15:43
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  There would be additional Q moves, wrapping around along diagonals as well as straight across ranks. (Meta: is it possible to put spoiler tags in comments?)
  $endgroup$
  – CJM
  Apr 17 at 19:05
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  @ArnaudMortier Note that the Qa5 can't move to give check without allowing the black king to escape to the a file
  $endgroup$
  – isaacg
  Apr 17 at 19:06
  

  
  
  
  

 | 
show 2 more comments

$begingroup$

It might be

cylindrical chess

so

the h- and a-file are connected, and you can mate with Qb4-h4, Qb4-h2, Rc3-h3 and Rd2-h2.

This fits the clue in the title insofar that

the 'a'-file lies to the right of the 'h'-file.

share|improve this answer

edited Apr 17 at 6:28

answered Apr 17 at 5:59

GlorfindelGlorfindel

17.8k55 gold badges6565 silver badges9999 bronze badges

$endgroup$

share|improve this answer

edited Apr 17 at 6:28

answered Apr 17 at 5:59

GlorfindelGlorfindel

17.8k55 gold badges6565 silver badges9999 bronze badges

answered Apr 17 at 5:59

GlorfindelGlorfindel

17.8k55 gold badges6565 silver badges9999 bronze badges

answered Apr 17 at 5:59

GlorfindelGlorfindel

17.8k55 gold badges6565 silver badges9999 bronze badges

3

$begingroup$

Maybe:

Rule:

The towers move like bishops.

So:

Checkmates:

Qa5-f5 # or Qb4-e4 # or Qb4-b1 # or Pg5-g6 #

Because:

Hints:

The third letter of the first word goes to the second letter of the second word (diagonally). The first word begins with T(ower), and does not move to the 'right', but moves as 'aa', letter one plus letter one, letter two, (B)ishop.

share|improve this answer

edited Apr 17 at 10:30

jafe

36.3k55 gold badges101101 silver badges361361 bronze badges

answered Apr 17 at 10:26

HermesHermes

65511 silver badge1111 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Closr, but not quite!
  $endgroup$
  – Rewan Demontay
  Apr 17 at 11:02
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  The towers are both on black tiles, which is also a reason your rule can't work out.
  $endgroup$
  – Gust van de Wal
  Apr 17 at 20:39
  

  
  
  
  

add a comment
 | 

3

$begingroup$

Maybe:

Rule:

The towers move like bishops.

So:

Checkmates:

Qa5-f5 # or Qb4-e4 # or Qb4-b1 # or Pg5-g6 #

Because:

Hints:

The third letter of the first word goes to the second letter of the second word (diagonally). The first word begins with T(ower), and does not move to the 'right', but moves as 'aa', letter one plus letter one, letter two, (B)ishop.

share|improve this answer

edited Apr 17 at 10:30

jafe

36.3k55 gold badges101101 silver badges361361 bronze badges

answered Apr 17 at 10:26

HermesHermes

65511 silver badge1111 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Closr, but not quite!
  $endgroup$
  – Rewan Demontay
  Apr 17 at 11:02
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  The towers are both on black tiles, which is also a reason your rule can't work out.
  $endgroup$
  – Gust van de Wal
  Apr 17 at 20:39
  

  
  
  
  

add a comment
 | 

$begingroup$

Maybe:

Rule:

The towers move like bishops.

So:

Checkmates:

Qa5-f5 # or Qb4-e4 # or Qb4-b1 # or Pg5-g6 #

Because:

Hints:

The third letter of the first word goes to the second letter of the second word (diagonally). The first word begins with T(ower), and does not move to the 'right', but moves as 'aa', letter one plus letter one, letter two, (B)ishop.

share|improve this answer

edited Apr 17 at 10:30

jafe

36.3k55 gold badges101101 silver badges361361 bronze badges

answered Apr 17 at 10:26

HermesHermes

65511 silver badge1111 bronze badges

$endgroup$

share|improve this answer

edited Apr 17 at 10:30

jafe

36.3k55 gold badges101101 silver badges361361 bronze badges

answered Apr 17 at 10:26

HermesHermes

65511 silver badge1111 bronze badges

edited Apr 17 at 10:30

jafe

36.3k55 gold badges101101 silver badges361361 bronze badges

edited Apr 17 at 10:30

jafe

36.3k55 gold badges101101 silver badges361361 bronze badges

answered Apr 17 at 10:26

HermesHermes

65511 silver badge1111 bronze badges

answered Apr 17 at 10:26

HermesHermes

65511 silver badge1111 bronze badges

2

$begingroup$

I believe the rules being broken are that

the board is not described traditionally, with the ranks described with letters and the files described with numbers

and

the board was set up with a black square in the bottom right hand corner (1a in this game's notation) rather than white as it should be.

This leads to checkmate by

promoting any of the white pawns to a rook or queen.

share|improve this answer

answered Apr 18 at 14:51

AlchymistAlchymist

16122 bronze badges

$endgroup$

• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  +1 for a nice idea, altough that would be legal moves, not illegal as this puzzis about!
  $endgroup$
  – Rewan Demontay
  Apr 18 at 15:41
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  @RewanDemontay Thank you for your acknowledgement although, to be pedantic, the puzzle doesn't state that the moves are invalid, just that at least one rule is being broken. The layout at the start of the game is a rule of chess. If I'm going to be ultrapedantic, you ask which rule/s are being broken rather than ones which will be broken by the next move. I could also offer the suggestion that the 'A'; has moved
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  – Alchymist
  Apr 23 at 14:39
  
  

  
  
  
  


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  Actually, the squares are labeled in the picture.
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  – Rewan Demontay
  Apr 23 at 14:42
  

  
  
  
  

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2

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I believe the rules being broken are that

the board is not described traditionally, with the ranks described with letters and the files described with numbers

and

the board was set up with a black square in the bottom right hand corner (1a in this game's notation) rather than white as it should be.

This leads to checkmate by

promoting any of the white pawns to a rook or queen.

share|improve this answer

answered Apr 18 at 14:51

AlchymistAlchymist

16122 bronze badges

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  +1 for a nice idea, altough that would be legal moves, not illegal as this puzzis about!
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  – Rewan Demontay
  Apr 18 at 15:41
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  @RewanDemontay Thank you for your acknowledgement although, to be pedantic, the puzzle doesn't state that the moves are invalid, just that at least one rule is being broken. The layout at the start of the game is a rule of chess. If I'm going to be ultrapedantic, you ask which rule/s are being broken rather than ones which will be broken by the next move. I could also offer the suggestion that the 'A'; has moved
  $endgroup$
  – Alchymist
  Apr 23 at 14:39
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  Actually, the squares are labeled in the picture.
  $endgroup$
  – Rewan Demontay
  Apr 23 at 14:42
  

  
  
  
  

add a comment
 | 

$begingroup$

I believe the rules being broken are that

the board is not described traditionally, with the ranks described with letters and the files described with numbers

and

the board was set up with a black square in the bottom right hand corner (1a in this game's notation) rather than white as it should be.

This leads to checkmate by

promoting any of the white pawns to a rook or queen.

share|improve this answer

answered Apr 18 at 14:51

AlchymistAlchymist

16122 bronze badges

$endgroup$

share|improve this answer

answered Apr 18 at 14:51

AlchymistAlchymist

16122 bronze badges

answered Apr 18 at 14:51

AlchymistAlchymist

16122 bronze badges

answered Apr 18 at 14:51

AlchymistAlchymist

16122 bronze badges