A new 4 x 4 arrow puzzle

up vote
8
down vote

favorite

Can anyone help me with solving this puzzle:

Draw arrows in all fields around the diagram in a way that every arrow is pointing at least one number inside. The numbers inside the boxes equal the number of arrows pointing at them. The arrows can point horizontally, vertically or diagonally.

Here is an example showing how to solve this type of puzzle.

arrows puzzle[1]

This is from a job interview so I have no source.

edited Nov 13 at 18:38

JonMark Perry

15.8k52975

asked Nov 13 at 14:29

Teditedutu

461

New contributor

4

What are the rules?
– Chris Cudmore
Nov 13 at 14:30

5

Also remember to add sources of puzzles when they are not your own.
– gabbo1092
Nov 13 at 14:30

1

Do you know if the arrows can go at angles? Otherwise I don't see how 5's are possible
– gabbo1092
Nov 13 at 14:41

Arrows can go in angles @gabbo1092
– Parseltongue
Nov 13 at 15:12

Why is this logical-deduction tagged? Is it really pure logical makeable or do you have to guess at the start?
– Jannis
Nov 13 at 16:12

|
show 6 more comments

up vote
8
down vote

favorite

Can anyone help me with solving this puzzle:

Here is an example showing how to solve this type of puzzle.

arrows puzzle[1]

This is from a job interview so I have no source.

edited Nov 13 at 18:38

JonMark Perry

15.8k52975

asked Nov 13 at 14:29

Teditedutu

461

New contributor

4

What are the rules?
– Chris Cudmore
Nov 13 at 14:30

5

Also remember to add sources of puzzles when they are not your own.
– gabbo1092
Nov 13 at 14:30

1

Do you know if the arrows can go at angles? Otherwise I don't see how 5's are possible
– gabbo1092
Nov 13 at 14:41

Arrows can go in angles @gabbo1092
– Parseltongue
Nov 13 at 15:12

Why is this logical-deduction tagged? Is it really pure logical makeable or do you have to guess at the start?
– Jannis
Nov 13 at 16:12

|
show 6 more comments

up vote
8
down vote

favorite

Can anyone help me with solving this puzzle:

Here is an example showing how to solve this type of puzzle.

arrows puzzle[1]

This is from a job interview so I have no source.

edited Nov 13 at 18:38

JonMark Perry

15.8k52975

asked Nov 13 at 14:29

Teditedutu

461

New contributor

Can anyone help me with solving this puzzle:

Here is an example showing how to solve this type of puzzle.

arrows puzzle[1]

This is from a job interview so I have no source.

logical-deduction grid-deduction

edited Nov 13 at 18:38

JonMark Perry

15.8k52975

asked Nov 13 at 14:29

Teditedutu

461

New contributor

edited Nov 13 at 18:38

JonMark Perry

15.8k52975

asked Nov 13 at 14:29

Teditedutu

461

New contributor

edited Nov 13 at 18:38

JonMark Perry

15.8k52975

edited Nov 13 at 18:38

JonMark Perry

15.8k52975

edited Nov 13 at 18:38

JonMark Perry

15.8k52975

asked Nov 13 at 14:29

Teditedutu

461

New contributor

asked Nov 13 at 14:29

Teditedutu

461

asked Nov 13 at 14:29

Teditedutu

461

New contributor

Teditedutu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

4

What are the rules?
– Chris Cudmore
Nov 13 at 14:30

5

Also remember to add sources of puzzles when they are not your own.
– gabbo1092
Nov 13 at 14:30

1

Do you know if the arrows can go at angles? Otherwise I don't see how 5's are possible
– gabbo1092
Nov 13 at 14:41

Arrows can go in angles @gabbo1092
– Parseltongue
Nov 13 at 15:12

Why is this logical-deduction tagged? Is it really pure logical makeable or do you have to guess at the start?
– Jannis
Nov 13 at 16:12

|
show 6 more comments

4

What are the rules?
– Chris Cudmore
Nov 13 at 14:30

5

Also remember to add sources of puzzles when they are not your own.
– gabbo1092
Nov 13 at 14:30

1

Do you know if the arrows can go at angles? Otherwise I don't see how 5's are possible
– gabbo1092
Nov 13 at 14:41

Arrows can go in angles @gabbo1092
– Parseltongue
Nov 13 at 15:12

Why is this logical-deduction tagged? Is it really pure logical makeable or do you have to guess at the start?
– Jannis
Nov 13 at 16:12

What are the rules?
– Chris Cudmore
Nov 13 at 14:30

Also remember to add sources of puzzles when they are not your own.
– gabbo1092
Nov 13 at 14:30

Do you know if the arrows can go at angles? Otherwise I don't see how 5's are possible
– gabbo1092
Nov 13 at 14:41

Arrows can go in angles @gabbo1092
– Parseltongue
Nov 13 at 15:12

Why is this logical-deduction tagged? Is it really pure logical makeable or do you have to guess at the start?
– Jannis
Nov 13 at 16:12

|
show 6 more comments

4 Answers
4

active

oldest

votes

up vote
5
down vote

I think this is the answer desired:

I started by

Assuming at least one arrows each in an inverted A shape, based on the prevalence of 5s and 4s, in columns 1 and 4, and rows 2 and 4. After that, it was primarily guesswork, placing lines, then working backwards to determine what arrows would cause those lines.

answered Nov 13 at 16:27

Sconibulus

14.3k127100

This is indeed the correct answer. bravo!
– ABcDexter
Nov 13 at 19:03

add a comment |

up vote
5
down vote

The first clue I spotted was:

The second column has exactly one vertical arrow.

This can be proven as:

It can't have two vertical arrows because of the 1 in it. If it has zero vertical arrows, then the 4 at (2,2) is forced, and then the 4 at (2,4) is forced. But then the 4 at (4,4) can't be achieved, because of it's six arrow squares, three have already been used: (4,0), (0,4) and (3,5).

Secondly you can spot that:

As the 1 in the second column is already covered, the arrows on row 1 must point diagonally downwards.

answered Nov 13 at 18:31

JonMark Perry

15.8k52975

add a comment |

up vote
0
down vote

This solution:

places an arrow in every field around the diagram;

each arrow points at one or more numbers inside;

satisfies the condition of having the numbers in the boxes equaling the numbers of arrows pointing at them!

That being said, the person who is giving you the interview may not like it.

edited Nov 13 at 15:25

answered Nov 13 at 15:18

Excited Raichu

4,029747

These are a standard puzzle form: puzzlepicnic.com/puzzles... but something about this puzzle makes me believe it's unsolvable. I wonder if it's just one of those task-persistence measures given in job interviews to see how long you'll try before you give up. Or, if it is solvable, it doesn't have characteristics of other arrow puzzles, which generally have one square with only one logical set of arrows possible.
– Parseltongue
Nov 13 at 15:32

I too thought about odd angles for arrows, but you sir are taking it to another level x)
– Cashbee
Nov 13 at 15:35

Bottom left corner?
– Greg
Nov 13 at 15:49

@Greg all of the outer squares it touches have an arrow pointing at it
– Excited Raichu
Nov 13 at 15:51

Wow, that is next level!
– Greg
Nov 13 at 15:58

|
show 1 more comment

up vote
0
down vote

This is a possibility:

https://i.stack.imgur.com/deYyd.jpg

I‘m sure there are others.

answered Nov 14 at 10:45

Anon

New contributor

add a comment |

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4 Answers
4

active

oldest

votes

4 Answers
4

active

oldest

votes

up vote
5
down vote

I think this is the answer desired:

I started by

Assuming at least one arrows each in an inverted A shape, based on the prevalence of 5s and 4s, in columns 1 and 4, and rows 2 and 4. After that, it was primarily guesswork, placing lines, then working backwards to determine what arrows would cause those lines.

answered Nov 13 at 16:27

Sconibulus

14.3k127100

This is indeed the correct answer. bravo!
– ABcDexter
Nov 13 at 19:03

add a comment |

up vote
5
down vote

I think this is the answer desired:

I started by

Assuming at least one arrows each in an inverted A shape, based on the prevalence of 5s and 4s, in columns 1 and 4, and rows 2 and 4. After that, it was primarily guesswork, placing lines, then working backwards to determine what arrows would cause those lines.

answered Nov 13 at 16:27

Sconibulus

14.3k127100

This is indeed the correct answer. bravo!
– ABcDexter
Nov 13 at 19:03

add a comment |

up vote
5
down vote

I think this is the answer desired:

I started by

Assuming at least one arrows each in an inverted A shape, based on the prevalence of 5s and 4s, in columns 1 and 4, and rows 2 and 4. After that, it was primarily guesswork, placing lines, then working backwards to determine what arrows would cause those lines.

answered Nov 13 at 16:27

Sconibulus

14.3k127100

I think this is the answer desired:

I started by

Assuming at least one arrows each in an inverted A shape, based on the prevalence of 5s and 4s, in columns 1 and 4, and rows 2 and 4. After that, it was primarily guesswork, placing lines, then working backwards to determine what arrows would cause those lines.

answered Nov 13 at 16:27

Sconibulus

14.3k127100

answered Nov 13 at 16:27

Sconibulus

14.3k127100

answered Nov 13 at 16:27

Sconibulus

14.3k127100

answered Nov 13 at 16:27

Sconibulus

14.3k127100

This is indeed the correct answer. bravo!
– ABcDexter
Nov 13 at 19:03

add a comment |

This is indeed the correct answer. bravo!
– ABcDexter
Nov 13 at 19:03

This is indeed the correct answer. bravo!
– ABcDexter
Nov 13 at 19:03

add a comment |

up vote
5
down vote

The first clue I spotted was:

The second column has exactly one vertical arrow.

This can be proven as:

It can't have two vertical arrows because of the 1 in it. If it has zero vertical arrows, then the 4 at (2,2) is forced, and then the 4 at (2,4) is forced. But then the 4 at (4,4) can't be achieved, because of it's six arrow squares, three have already been used: (4,0), (0,4) and (3,5).

Secondly you can spot that:

As the 1 in the second column is already covered, the arrows on row 1 must point diagonally downwards.

answered Nov 13 at 18:31

JonMark Perry

15.8k52975

add a comment |

up vote
5
down vote

The first clue I spotted was:

The second column has exactly one vertical arrow.

This can be proven as:

It can't have two vertical arrows because of the 1 in it. If it has zero vertical arrows, then the 4 at (2,2) is forced, and then the 4 at (2,4) is forced. But then the 4 at (4,4) can't be achieved, because of it's six arrow squares, three have already been used: (4,0), (0,4) and (3,5).

Secondly you can spot that:

As the 1 in the second column is already covered, the arrows on row 1 must point diagonally downwards.

answered Nov 13 at 18:31

JonMark Perry

15.8k52975

add a comment |

up vote
5
down vote

The first clue I spotted was:

The second column has exactly one vertical arrow.

This can be proven as:

It can't have two vertical arrows because of the 1 in it. If it has zero vertical arrows, then the 4 at (2,2) is forced, and then the 4 at (2,4) is forced. But then the 4 at (4,4) can't be achieved, because of it's six arrow squares, three have already been used: (4,0), (0,4) and (3,5).

Secondly you can spot that:

As the 1 in the second column is already covered, the arrows on row 1 must point diagonally downwards.

answered Nov 13 at 18:31

JonMark Perry

15.8k52975

The first clue I spotted was:

The second column has exactly one vertical arrow.

This can be proven as:

It can't have two vertical arrows because of the 1 in it. If it has zero vertical arrows, then the 4 at (2,2) is forced, and then the 4 at (2,4) is forced. But then the 4 at (4,4) can't be achieved, because of it's six arrow squares, three have already been used: (4,0), (0,4) and (3,5).

Secondly you can spot that:

As the 1 in the second column is already covered, the arrows on row 1 must point diagonally downwards.

answered Nov 13 at 18:31

JonMark Perry

15.8k52975

answered Nov 13 at 18:31

JonMark Perry

15.8k52975

answered Nov 13 at 18:31

JonMark Perry

15.8k52975

answered Nov 13 at 18:31

JonMark Perry

15.8k52975

add a comment |

up vote
0
down vote

This solution:

places an arrow in every field around the diagram;

each arrow points at one or more numbers inside;

satisfies the condition of having the numbers in the boxes equaling the numbers of arrows pointing at them!

That being said, the person who is giving you the interview may not like it.

edited Nov 13 at 15:25

answered Nov 13 at 15:18

Excited Raichu

4,029747

These are a standard puzzle form: puzzlepicnic.com/puzzles... but something about this puzzle makes me believe it's unsolvable. I wonder if it's just one of those task-persistence measures given in job interviews to see how long you'll try before you give up. Or, if it is solvable, it doesn't have characteristics of other arrow puzzles, which generally have one square with only one logical set of arrows possible.
– Parseltongue
Nov 13 at 15:32

I too thought about odd angles for arrows, but you sir are taking it to another level x)
– Cashbee
Nov 13 at 15:35

Bottom left corner?
– Greg
Nov 13 at 15:49

@Greg all of the outer squares it touches have an arrow pointing at it
– Excited Raichu
Nov 13 at 15:51

Wow, that is next level!
– Greg
Nov 13 at 15:58

|
show 1 more comment

up vote
0
down vote

This solution:

places an arrow in every field around the diagram;

each arrow points at one or more numbers inside;

satisfies the condition of having the numbers in the boxes equaling the numbers of arrows pointing at them!

That being said, the person who is giving you the interview may not like it.

edited Nov 13 at 15:25

answered Nov 13 at 15:18

Excited Raichu

4,029747

These are a standard puzzle form: puzzlepicnic.com/puzzles... but something about this puzzle makes me believe it's unsolvable. I wonder if it's just one of those task-persistence measures given in job interviews to see how long you'll try before you give up. Or, if it is solvable, it doesn't have characteristics of other arrow puzzles, which generally have one square with only one logical set of arrows possible.
– Parseltongue
Nov 13 at 15:32

I too thought about odd angles for arrows, but you sir are taking it to another level x)
– Cashbee
Nov 13 at 15:35

Bottom left corner?
– Greg
Nov 13 at 15:49

@Greg all of the outer squares it touches have an arrow pointing at it
– Excited Raichu
Nov 13 at 15:51

Wow, that is next level!
– Greg
Nov 13 at 15:58

|
show 1 more comment

up vote
0
down vote

This solution:

places an arrow in every field around the diagram;

each arrow points at one or more numbers inside;

satisfies the condition of having the numbers in the boxes equaling the numbers of arrows pointing at them!

That being said, the person who is giving you the interview may not like it.

edited Nov 13 at 15:25

answered Nov 13 at 15:18

Excited Raichu

4,029747

This solution:

places an arrow in every field around the diagram;

each arrow points at one or more numbers inside;

satisfies the condition of having the numbers in the boxes equaling the numbers of arrows pointing at them!

That being said, the person who is giving you the interview may not like it.

edited Nov 13 at 15:25

answered Nov 13 at 15:18

Excited Raichu

4,029747

edited Nov 13 at 15:25

answered Nov 13 at 15:18

Excited Raichu

4,029747

answered Nov 13 at 15:18

Excited Raichu

4,029747

answered Nov 13 at 15:18

Excited Raichu

4,029747

These are a standard puzzle form: puzzlepicnic.com/puzzles... but something about this puzzle makes me believe it's unsolvable. I wonder if it's just one of those task-persistence measures given in job interviews to see how long you'll try before you give up. Or, if it is solvable, it doesn't have characteristics of other arrow puzzles, which generally have one square with only one logical set of arrows possible.
– Parseltongue
Nov 13 at 15:32

I too thought about odd angles for arrows, but you sir are taking it to another level x)
– Cashbee
Nov 13 at 15:35

Bottom left corner?
– Greg
Nov 13 at 15:49

@Greg all of the outer squares it touches have an arrow pointing at it
– Excited Raichu
Nov 13 at 15:51

Wow, that is next level!
– Greg
Nov 13 at 15:58

|
show 1 more comment

These are a standard puzzle form: puzzlepicnic.com/puzzles... but something about this puzzle makes me believe it's unsolvable. I wonder if it's just one of those task-persistence measures given in job interviews to see how long you'll try before you give up. Or, if it is solvable, it doesn't have characteristics of other arrow puzzles, which generally have one square with only one logical set of arrows possible.
– Parseltongue
Nov 13 at 15:32

I too thought about odd angles for arrows, but you sir are taking it to another level x)
– Cashbee
Nov 13 at 15:35

Bottom left corner?
– Greg
Nov 13 at 15:49

@Greg all of the outer squares it touches have an arrow pointing at it
– Excited Raichu
Nov 13 at 15:51

Wow, that is next level!
– Greg
Nov 13 at 15:58

These are a standard puzzle form: puzzlepicnic.com/puzzles... but something about this puzzle makes me believe it's unsolvable. I wonder if it's just one of those task-persistence measures given in job interviews to see how long you'll try before you give up. Or, if it is solvable, it doesn't have characteristics of other arrow puzzles, which generally have one square with only one logical set of arrows possible.
– Parseltongue
Nov 13 at 15:32

I too thought about odd angles for arrows, but you sir are taking it to another level x)
– Cashbee
Nov 13 at 15:35

Bottom left corner?
– Greg
Nov 13 at 15:49

@Greg all of the outer squares it touches have an arrow pointing at it
– Excited Raichu
Nov 13 at 15:51

Wow, that is next level!
– Greg
Nov 13 at 15:58

|
show 1 more comment

up vote
0
down vote

This is a possibility:

https://i.stack.imgur.com/deYyd.jpg

I‘m sure there are others.

answered Nov 14 at 10:45

Anon

New contributor

add a comment |

up vote
0
down vote

This is a possibility:

https://i.stack.imgur.com/deYyd.jpg

I‘m sure there are others.

answered Nov 14 at 10:45

Anon

New contributor

add a comment |

up vote
0
down vote

This is a possibility:

https://i.stack.imgur.com/deYyd.jpg

I‘m sure there are others.

answered Nov 14 at 10:45

Anon

New contributor

This is a possibility:

https://i.stack.imgur.com/deYyd.jpg

I‘m sure there are others.

answered Nov 14 at 10:45

Anon

New contributor

answered Nov 14 at 10:45

Anon

New contributor

answered Nov 14 at 10:45

Anon

answered Nov 14 at 10:45

Anon

New contributor

Anon is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment |

Teditedutu is a new contributor. Be nice, and check out our Code of Conduct.

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