NationStates Jolt Archive

My sister's friend told my sister this riddle and it was then told to me. None of us are able to get it. I have had several ideas and two failed...epiphanies, if you will.

There are are two sides of a river. The entire party must cross. There is only one boat that fits two. Several conditions apply.
-cop
-criminal (cannot be with others without cop)
-mom (cannot be alone with son(s))
-dad (cannot be alone with daughter(s))
-2 daughters
-2 sons

There are only two sides to a river. The boat is mainly figurative and cannot hold anyone.

PS: 10 posts to go! Wot!

Anyone know how to solve these? I know there's one with a dog, cat, mouse and farmer or fox, rabbit, and plant with a farmer...


I apologize for not saying that only the cop, mom, and dad can drive the boat.

My sister's friend told my sister this riddle and it was then told to me. None of us are able to get it. I have had several ideas and two failed...epiphanies, if you will.

There are are two sides of a river. The entire party must cross. There is only one boat that fits two. Several conditions apply.
-cop
-criminal (cannot be with others without cop)
-mom (cannot be alone with son(s))
-dad (cannot be alone with daughter(s))
-2 daughters
-2 sons

There are only two sides a river. The boat is mainly figurative and cannot hold anyone permanently.

Anyone know how to solve these? I know there's one with a dog, cat, mouse and farmer or fox, rabbit, and plant with a farmer...

The Cop dispenses justice to the Criminal in the form of a bullet.

Daughter takes other Daughter across. Daughter then takes over Mom.

Daughter rides over, takes the boat back for the two sons. Son gets Dad, then Dad collects the Cop and returns to shore.

My sister's friend told my sister this riddle and it was then told to me. None of us are able to get it. I have had several ideas and two failed...epiphanies, if you will.

There are are two sides of a river. The entire party must cross. There is only one boat that fits two. Several conditions apply.
-cop
-criminal (cannot be with others without cop)
-mom (cannot be alone with son(s))
-dad (cannot be alone with daughter(s))
-2 daughters
-2 sons

There are only two sides a river. The boat is mainly figurative and cannot hold anyone permanently.

Anyone know how to solve these? I know there's one with a dog, cat, mouse and farmer or fox, rabbit, and plant with a farmer...

The cop shoots the criminal and the two child-molesting parents, then rows the kids over one at a time.

Mom takes the boat along with a daughter, then returns for the other daughter.
Dad cant be alone with daughter.

Doesn't the cop just keep going back and forth taking a passenger each time? Am I not getting it? Edit: Oh, duh. I'm an idiot

Doesn't the cop just keep going back and forth taking a passenger each time? Am I not getting it? Edit: Oh, duh. I'm an idiot

That leaves the criminal to kill everyone...

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Wait, I'll correct my solution.

That leaves the criminal to kill everyone...

Yeah, that criminal is a jack ass. Why isn't he in prison?

Dad brings two sons over, mom brings two daughters over, and cop+criminal go over last?

Dad brings two sons over, mom brings two daughters over, and cop+criminal go over last?

Only two people can cross at once...

Break the boat up for kindling and cook the criminal for dinner. Fuck the river.

Only two people can cross at once...

Ops.

Mom and dad go over first, and then the sons, then the daughters, and lastly the cop and criminal.

How about my new solution?

criminal hauled off to jail, so we don't have to worry about him. then the two sons cross, thenn the teo daughters, then the mom and dad, then the cop.

question, can the children row the boat?

Doesn't someone have to row the boat back over the river?

Doesn't someone have to row the boat back over the river?

Loopholes ftw.

second question, when you say mom can not be ALONE with son(s) and dad can not be ALONE with daughter(s) as long as at least one other person is around when father is with daughter(s) and mother is with son(s) this is ok right?

Edit: Stupid me, someone has to go back.

1.The cop goes over with the criminal
2.The mom goes over with the dad
3.One son goes with one daughter
4.Last son goes with last daughter

I think thats it...

the problem is someone has to bring the boat BACK each time.

Got it. I will use | to differentiate who is on what side at what time.

starting:

cop, crook, mom, dad, daughter 1, daughter 2, son 1, son 2 | nobody

Step 1: daughter 1 brings daughter 2 over, daughter 1 returns with boat:

cop, crook, mom, dad, daughter 1, son 1, son 2 | daughter 2

Step 2: daughter 1 takes son 1, daughter 1 takes boat back:

cop, crook, mom, dad, daughter 1, son 2 | daughter 2, son 1

Step 3: Daughter 1 takes over son 2, son 2 LEAVE daughter 1 there, returns with boat:

cop, crook, mom, dad, son 2 | daughter 1, daughter 2, son 1

Step 4: son 2 takes dad over, son 2 and dad get off, DAUGHTER 2 takes boat back:

cop, crook, mom, daughter 2 | daughter 1, son 1, son 2, dad

Step 5: daughter 2 takes mom, daughter 2 returns:

cop, crook, daughter 2 | daughter 1, son 1, mom, dad, son 2

Step 6: cop takes crook over, cop and crook get off, mom takes boat back:

daughter 2, mom | cop, crook, daughter 1, son 1, son 2, dad

Step 7: mom and daughter go over

explanation: it only says mother can't be ALONE with son(s). Likewise it only says dad can't be ALONE with daughters. As long as SOMEONE else is there, it's fine. Additionally, never says the children can't row the boat. At no time is a mother and son, or a father and daughter alone either on one side, or in the boat. Likewise at no time is the criminal not in the presence of the cop.

Both sons row across.
Son rows back.
Dad and son row across.
Dad rows back.
Mom and dad row across.
Mom rows back.
Mom and daughter row across.
Daughter rows back.
Both daughters row across.
Daughter rows back.
Cop and daughter row across.
Cop rows back.
Cop and criminal row across.

Each child is always either alone or with at least one of the cop, the same sex parent, or the same sex sibling. The criminal is always either alone or with the cop.

1) cop & criminal go over
2) cop brings back boat
3) cop & girl1 go over
4) cop & criminal bring back boat,
5) mom & girl2 go over
6) mom brings back boat
7) mom & dad go over
8) dad brings back boat
9) cop & criminal go over
10) mom brings back boat
11) mom & dad go over
12) dad brings back boat,
13) dad & boy1 go over
14) cop & criminal bring back boat,
15) cop & boy2 go over
16) cop brings back boat
17) cop & criminal go over.

Everybody's over.

Does the cop have handcuffs?

cop takes criminal over
cop goes back, takes mom, cop stays
mom takes daughter
mom takes daughter, mom stays
daughter takes son
daughter takes son, both say

mom goes back for dad.

1.Cop goes over with the criminal, then goes back
2.Cop gets the dad they go to the other side, then the cop gets out, then the dad goes back
3.Dad gets first son, takes him to the other side, then goes back
4.Dad gets second son, takes him to the other side, then goes back
5.Dad takes mom to the other side, then dad gets out, mom goes back
6.Mom gets first daughter to the other side, then goes back
7.Mom gets second daughter to the side, and they are all there.

Now I think I have it.

Edit:I see people figured it out while I was thinking and writing.

My sister's friend told my sister this riddle and it was then told to me. None of us are able to get it. I have had several ideas and two failed...epiphanies, if you will.

There are are two sides of a river. The entire party must cross. There is only one boat that fits two. Several conditions apply.
-cop
-criminal (cannot be with others without cop)
-mom (cannot be alone with son(s))
-dad (cannot be alone with daughter(s))
-2 daughters
-2 sons

There are only two sides to a river. The boat is mainly figurative and cannot hold anyone.

PS: 10 posts to go! Wot!

Anyone know how to solve these? I know there's one with a dog, cat, mouse and farmer or fox, rabbit, and plant with a farmer...

As the criminal's description says he can not be alone with the others, and not that he can not be alone at all:

Move the criminal.
Move the cop.
Move one son.
Move one daughter.
Move the mother.
Move the father.
Move the last son.
Move the last daughter.

question, can the children row the boat?

In every version of the problem I've seen before, no they can't.

There's a Flash version of the game here (http://freeweb.siol.net/danej/riverIQGame.swf). It's in Japanese, but the big round blue button starts.

Think it went something like:
Cop + crim, cop back
Cop + boy1, cop + crim back
Bloke + boy2, bloke back
Bloke + woman, woman back
Cop + crim, bloke back
Bloke + woman, woman back
Woman + girl1, cop + crim back
Cop + girl2, cop back
Cop + crim, win.

But excuse me if I've missed a step anywhere!

(After Preview: looks like I'm too late!)

there are an amazing number of solutions to this riddle!

I stand by my answer since I was never told the children couldn't row it!

Either way, seems the minimum number of round trips to do this is 7.

m + d1
m
m + d2
m
f + s1
f
f + s2
f
m + f
f
f + cop
cop
cop + crim

Either way, seems the minimum number of round trips to do this is 7.

It is impossible to do it in any less as we have to get 8 people across the river, and there must be someone rowing back the boat 6 times.

1. Cop & Criminal. Criminal leaves boat.

2. Cop & Mum. Cop leaves boat.

3. Mum & Daughter. Daughter leave boat.

4. Mum & Daughter. Daughter leave boat.

5. Mum & Dad. Mum leaves boat.

6. Dad & Son. Dad leaves boat.

7. Son & Son. Both leaves boat.

The Criminal will be with copper when with others.
Dad won't be alone with Daughters as the Sons are there.
Mum won't be alone with Sons as others are there.

<- both girls
-> one girl
<-girl + boy
-> boy
<- both boys
-> boy
<- mum and dad
-> boy
<- both boys
-> boy
<- cop and boy
-> cop
<- cop and crook

fin

edit: clarification: is the criminal allowed to be alone, or does he have to remain with the cop at all times, as that would require a different solution.

It is impossible to do it in any less as we have to get 8 people across the river, and there must be someone rowing back the boat 6 times.

feh, you had to go and ring math into it.

feh, you had to go and ring math into it.

Depending on the width of the river, the people could form a human chain holding hands in the water so that they are able to pull the boat back without anybody in it...

I stand by my answer since I was never told the children couldn't row it!

Either way, seems the minimum number of round trips to do this is 7.

it doesnt say the kids cant row and it doesnt say that the criminal cant be on one side all by himself.

just cant leave the criminal with the others or the parents alone with a child of the opposite sex.

i go with gartref's first solution, the criminal and the pedophillic parents get a bullet to the head. problem solved.

I apologize for not saying that only the cop, mom, and dad can drive the boat.

There's a Flash version of the game here (http://freeweb.siol.net/danej/riverIQGame.swf). It's in Japanese, but the big round blue button starts.
Yup. And you saved me the trouble of going to look for the url. :p

1) cop & criminal go over
2) cop brings back boat
3) cop & girl1 go over
4) cop & criminal bring back boat,
5) mom & girl2 go over
6) mom brings back boat
7) mom & dad go over
8) dad brings back boat
9) cop & criminal go over
10) mom brings back boat
11) mom & dad go over
12) dad brings back boat,
13) dad & boy1 go over
14) cop & criminal bring back boat,
15) cop & boy2 go over
16) cop brings back boat
17) cop & criminal go over.

Everybody's over.

This appears correct. Good job!

This appears correct. Good job!

It is not the most elegant solution though. We could replace his steps 1-4 with the mother taking one of the girls over and then bringing back the boat.

This appears correct. Good job!
No it isn't. Play this (http://freeweb.siol.net/danej/riverIQGame.swf) flash game and use his steps. The cop cannot bring the boat back on the 14th step because the boat is on the opposite shore.

It is not the most elegant solution though. We could replace his steps 1-4 with the mother taking one of the girls over and then bringing back the boat.

Not in the Flash version; that counts as the Father being alone with the Daughter (despite the Policeman's presence).

Seems a bit silly to me, but nevermind...

Not in the Flash version; that counts as the Father being alone with the Daughter (despite the Policeman's presence).

Seems a bit silly to me, but nevermind...

That may well be the answer to the particular question framed by the Flash version, but not the answer to the question we were given.

That may well be the answer to the particular question framed by the Flash version, but not the answer to the question we were given.

The Flash version is what I meant. This is what happens with oral transmission...information disappears or is corrupted.

okay, got it

<- cop + criminal
-> cop
<- cop and boy
-> cop and criminal
<- dad and boy
-> dad
<- dad and mum
-> mum
<- cop and criminal
-> dad
<- dad and mum
-> mum
<- mum and girl
-> mum
<- mum and girl

fin

This appears correct. Good job!I wish I would read threads like this before putting effort in.

That may well be the answer to the particular question framed by the Flash version, but not the answer to the question we were given.

Aye. And one wonders what the policeman is up to, letting parents within his reach abuse their children. Paperwork, probably. Or manning a speed camera. He should go and catch some real criminals, the lazy bum!

okay, got it

<- cop + criminal
-> cop
<- cop and boy
-> cop and criminal
<- dad and boy
-> dad
<- dad and mum
-> mum
<- cop and criminal
-> dad
<- dad and mum
-> mum
<- mum and girl
-> mum
<- mum and girl

fin

Nope, the dad is left with one girl on the far side of the river.

I've played this game many times, I can't crack it...

http://www.addictinggames.com/rivergame.html

Holy crap I love you infinite dunes!

<- cop + criminal
-> cop
<- cop and boy
-> cop and criminal
<- dad and boy
-> dad
<- dad and mum
-> mum
<- cop and criminal
-> dad
<- dad and mum
-> mum
<- mum and girl
-> cop and criminal
<- cop and girl
->cop
<-cop and criminal

MUAHAHAHAHAHAH!!!

Nope, the dad is left with one girl on the far side of the river.

I've played this game many times, I can't crack it...

http://www.addictinggames.com/rivergame.htmlBah, like some other person said. Oral infomation is corrupted. I presumed 'not being left on their own with child of opposite gender' meant that if the cop was there nothing bad would happen.


Anyway, revised version that works on flash

<- cop + criminal
-> cop
<- cop and boy
-> cop and criminal
<- dad and boy
-> dad
<- dad and mum
-> mum
<- cop and criminal
-> dad
<- dad and mum
-> mum
<- mum and girl
-> cop and criminal
<- cop and girl
-> cop
<- cop and criminal

fin

Holy crap I love you infinite dunes!



MUAHAHAHAHAHAH!!!Awww, even enough to time warp me as well. :fluffle:

-> Dad and son
<- Dad
-> Dad and son
<- Dad
-> Dad and mom
<- Mom
-> Mom and daughter
<- Mom
-> Mom and daughter
<- Mom
-> Cop and criminal
<- Dad
-> Mom and dad

Simple.

1) Mom takes one daughter over. Mom brings boat back.
2) Mom takes other daughter over. Mom brings boat back.
3) Dad takes Mom over. Dad brings back boat.
4) Dad takes one son over. Dad brings boat back.
5) Dad takes second son over. Dad brings boat back.
6) Cop takes criminal over. Mom brings boat back.
7) Mom and Dad take the boat over.

All rules are adhered to.

Fin...and owned.

What a screwed up family,

Ain't Japanese either

Simple.

1) Mom takes one daughter over. Mom brings boat back.
2) Mom takes other daughter over. Mom brings boat back.
3) Dad takes Mom over. Dad brings back boat.
4) Dad takes one son over. Dad brings boat back.
5) Dad takes second son over. Dad brings boat back.
6) Cop takes criminal over. Mom brings boat back.
7) Mom and Dad take the boat over.

All rules are adhered to.

Fin...and owned.Nope, you're leaving the mum alone with the first son on the far bank whilst the dad goes to collect the second son.

[QUOTE=Ikonja;12492775]1) Mom takes one daughter over. Mom brings boat back.
QUOTE]

All answers that start with a parent crossing leaves the other parent with a child of the different sex - no good.

You have to start with the cop + criminal but from there they're out of the equation since one cannot cross without the other.

You then come to 3 kids on 1 side with 2 parents and 1 kid on the other, beyond that it's beyond me.

She is with the two daughters as well. That doesn't count as "alone."

A parent could be with a child of opposite sex, just not alone with that child. Read carefully.

Bah, like some other person said. Oral infomation is corrupted. I presumed 'not being left on their own with child of opposite gender' meant that if the cop was there nothing bad would happen.


Anyway, revised version that works on flash

<- cop + criminal
-> cop
<- cop and boy
-> cop and criminal
<- dad and boy
-> dad
<- dad and mum
-> mum
<- cop and criminal
-> dad
<- dad and mum
-> mum
<- mum and girl
-> cop and criminal
<- cop and girl
-> cop
<- cop and criminal

fin

TOTAL WIN

My sister's friend told my sister this riddle and it was then told to me. None of us are able to get it. I have had several ideas and two failed...epiphanies, if you will.

There are are two sides of a river. The entire party must cross. There is only one boat that fits two. Several conditions apply.
-cop
-criminal (cannot be with others without cop)
-mom (cannot be alone with son(s))
-dad (cannot be alone with daughter(s))
-2 daughters
-2 sons
I apologize for not saying that only the cop, mom, and dad can drive the boat.
1) Mom takes one daughter across and comes back.
2) Mom takes other daughter across and comes back.
3) Dad takes mom across and comes back.
4) Dad takes one son across and comes back.
5) Dad takes other son across and comes back.
6) Cop takes dad across and comes back.
7) Cop takes criminal across.

All answers that start with a parent crossing leaves the other parent with a child of the different sex - no good.

You have to start with the cop + criminal but from there they're out of the equation since one cannot cross without the other.

You then come to 3 kids on 1 side with 2 parents and 1 kid on the other, beyond that it's beyond me.
That's not what your phrasing says.

I have solved this a few times on the online game, but I always forget how I did it and have to start from scratch every time. :p