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Below is the complete list of Robozzle puzzles I've solved (from the Robozzle website).
1347 of them at the last count (I don't waste my evenings!).
You can request a solution in the comments below and I'll do my best.
You can request a solution in the comments below and I'll do my best.
Solved puzzles (1347)
Rank: 107 / 185139
please give the solution of puzzle id 313 (colorful path)
ReplyDelete313, try:
DeleteF1: FWD, Left, Left on Green, F2 if Red, F1.
F2 & F3 are similar.
DeleteBTW, sorry for taking so long to reply. Didn't see your comment (inserts "Doh" emoji).
DeleteThis comment has been removed by the author.
Delete188
DeleteUse stack.
So F1 jumps to F2.
Two forwards then test if blue.
Single forward at the end of F2 means you go back half way (the reds are always an even number of fwds away).
Solution:
http://www.robozzle.com/beta/index.html?puzzle=188&program=OdmiimczMuIaaa
thank you
Delete1251 please
ReplyDeleteTrick to 1251 would be to paint starting square red then jump to F2.
DeleteDoes that help?
Ohh yes 🙌🏼🙏🏼
Delete584 please!
ReplyDeleteI'm in pain!
Let's go forward...
DeleteThere's a green on 4 and a green on 8.
Let's turn on red.
There's a green on 4 and a green on 8. hmmm.
And a green on 12... a green on every 4th step. hmmm.
Let's look ahead down the column with no red on the corner...
there's a green on 4 but no green on 8. hmmm.
So if we could:
Turn on red or every 4th step if blue.
Should I continue?
I'll rest for now. I see what you´re saying but can't formalize it.
DeleteThanks
hey, i m blocked too.
Deletei ll let you know in a few days if i can make the most of your hints.
thank you
Please help with 1430
ReplyDelete1430 is pretty straightforward...don't need F2.
DeleteYou're going to go fwd then left then fwd.
Then fwd if blue, then right.
Thanks alot!
DeleteI got it right...
Are you familiar with stacks and counting notions?...
I've been stuck with 1061 for a while now...I'm a bit struggling to understand how does stacks and recursion actually work
Congrats on 1430!
DeleteThe stack is where unused instructions get stored to run later (stacked) because the program flow is interrupted (by, for example, "if blue goto F2").
To help see the stack, run Robozzle in the beta version:
http://www.robozzle.com/beta/index.html?puzzle=1061
you will see the stack of instructions build and decrease in the bottom.
In Robozzle stack puzzles the first instruction in F1 will (almost) always be "F2".
First instruction in F2 will (almost) always be "Fwd".
In 1061 you're going to have a couple of turns on Red, and you're going to want to add a bunch of "Fwd"s to the stack. You would do that by having a single "Fwd" at the end and an interrupt before that (ie "if blue goto F2").
Once you've solved 1061 you should be able to do http://www.robozzle.com/beta/index.html?puzzle=330.
Yes it worked!
ReplyDeleteThank you for your help
I can't believe I spent more than 2 days
Trying to figure out 1061
Now stacks notions are very clear in my mind.
I've managed to solve 330 in less than a minute 😁.
Welcome to the Honorary Society of Robozzle Timewastees; may your days fly by. :)
DeleteHi, I'm stuck on the "elevator" puzzle for some reason, the 472 one. :(
ReplyDeleteClue 1: the green is a red herring
DeleteClue 2: you don't need all the instructions
Clue 3: clear the top 4 squares, then move down 1 square and repeat. :)
i cant do it.....:( please help
DeleteOne solution:
Deletehttp://www.robozzle.com/beta/index.html?puzzle=472&program=OcCqiiIaadmWa5adme
Hi I'm stuck on the "Ups and Downs" puzzle. May I please get some clues
ReplyDeleteYou're going to need to use the stack.
DeleteYou comfortable with that? Then let us continue...
So you'll want to align yourself facing up (or down) the column you are in.
Then jump to F2 and move along the column, checking at each step if you are NOT at the end of the column...
ie is the square you are on green or red.
You would jump back to F2 if not at the end, else turn on blue and eat up the FWDs you'd stacked on the journey along the column.
With me so far?
After that, with F2 finished, you'd be returned to continue the rest of F1, which would be aligning for the next column climb.
I've used 7 instructions in F1 and 6 in F2.
First instruction in F1: "Left on green"
Last instruction in F1: "Jump to F1"
First and last instructions in F2: "Fwd"
Good luck.
Please could someone give more help about this one ? i am completly stucked
Deletehttp://www.robozzle.com/beta/index.html?puzzle=714&program=OQQbJQraaaekrMywlcaaaaa
Deleteplease 472 elevator...
ReplyDeleteI gave clues on 2 December 2020 above.
ReplyDeleteTry that first.
Failing that here's one solution:
F1: F4, F3
F2: L, Fwd
F3: F5, F1
F4: F2, F2, F2
F5: L, Fwd, Fwd
hi
ReplyDeletecan you solve 634 in 5?
thank you,
have a nice day.
Nope. 8.
DeleteThis comment has been removed by the author.
Delete444 pleaseeee
ReplyDeleteF1:
Deleteif red: F2
if red: F2
if red: F2
if red: turn right
F1
F2:
FWD
if blue: F2
444 pleaseeee
ReplyDelete444 pleaseeee
ReplyDelete444 pleaseeee
ReplyDelete444 pleaseeee
ReplyDelete444 pleaseeee
ReplyDeleteIs there a alternative solution to 532 , I have solved it with the exact solution in another test game but it gives memory error as stacks add up in each blue step. It is a copy of robozzle.
ReplyDeleteWhat other game? Is it online?
DeleteHello, please 644 solution !
ReplyDeleteIn F1 you're going to be going forward and turning left on green.
DeleteIn F2 you'll be going forward and turning right on green.
In F1 you'll also need to:
- Turn right on red
= Jump to F2 on red.
644 please solution
ReplyDeleteI've been stuck with #36 "explore the World" for years. Any help would be very appreciated.
ReplyDeleteSorry, 36 is beyond me.
DeleteIf you check out the comments
(http://www.robozzle.com/forums/thread.aspx?puzzle=36)
there's talk of "depth first search" which is... erm... really helpful.
Hi, has Anyone the solution for 2026 plz ? I am a complete beginner and I am stuck. Thanks for your help.
ReplyDeleteWell you're going to go forward and jump to F2 on green and F3 on red.
DeleteIn F2...
you'll notice every green square comes one step before a right turn.
So on green (F2) you want to go forward then right.
Similar for red (F3).
Hi!!!
ReplyDelete3957 "Level 2 mathhouse competition" pleaseeee
I'm in pain
Aha! Yes!
DeleteThat is a very simple yet clever solution.
Without giving it all away, I can give a big clue in that after the first pass through, the icon will be in the second square...and facing up!
It will, in effect, have been moved one square to the right, and be facing up, ready for the next pass to move it another square to the right. And so on.
Is that enough for you?
Hi!!!
ReplyDeleteCould you help me with 3957 "Level 2 - mathhouse competition" plz? I'm in pain. pleaseeeeee
Hi, awesome blog, thank you so much for making it! Could you please help me with a simple one, the Criss Cross (780)? I even tried the program called "robozzlesolver", which someone suggested somewhere in this blog, to find a solution, and it says "unfortunately solver could not find any solutions" :(
ReplyDeleteThanks a lot in advance!
Thanks.
DeleteWith this one we can have a classic start:
First step: FWD
Last step: F1
In between some combination of:
Right on Red
Left on Green
Paint the Greens Red
and that should be that!
Oh wow thank you so much! My pain is finally relieved! :D
DeleteCould I still bother you with two puzzles I couldn't solve? :) "Missing red tile II" (155) and "Enter, don't enter" (723), I have solved the easier versions of these two, but I can't seem to find the solutions for the harder ones. It's possible I am self-limited by the solutions I found for the easier versions. I'd really appreciate it if you could help me out :)
155
DeleteStack.
Cool with that?
So F1 begins with the usual for stack: a call to F2.
And F1 ends with a call to F1.
F2 (as usual for stack) has FWD then "F2 if Blue".
So it keeps going till it hits non-blue (green in this case). We then want to go up a row and face back, so
Right if Green, FWD if Green, Right if Green.
Then we put in a FWD to get back to the starting column.
F2 done we're returned to F1 where we want a single FWD (don't want to go to red) then 2 turns and the loop to F1.
And that's it.
723
DeleteClassic start: F1: Fwd,
If Red I'm going to jump to F2 where I turn right and go Fwd and if I am then on blue, I'm going to jump to F3 where I turn twice and go fwd.
Is that ok?
Aha! That's ingenious! Thank you so much again!
DeleteHello !
ReplyDeleteI have problems with the level 247 'Make love, not war'. I have passed 1 hour on this and I have no more patience. Can you give me some help ?
Go FWD
DeleteTurn Right on Red
Turn Left on Blue
That should get you to the green.
What then?
Probably jump to F2 on Green and turn around!
It can also be solved with recursive F1 alone:
DeleteFWD
if red turn RIGHT
if blue turn LEFT
if green turn LEFT
If green turn LEFT
Call F1
Hi, I am here again with two puzzles which I have spent days trying to figure it out: 1. "up or down?" (320). It seems there is a hidden pattern which I just fail to see. 2. "Delayed reaction" (137). If there were a F3, it would have been easy of course. With two functions only, I just can't find a way to make the robot turn the way as needed, no matter how I tried.
ReplyDeleteCould you please help me out? Thank you again. :)
137...
DeleteThe trick is...
Go Fwd then loop back on Blue!
F1:
FWD
If Blue goto F1
etc
Hopefully you can solve from there.
320 later...once I've figured it out again!
Hi thank you for the answer again. I tried to turn downward if green or upward if red or forward+downward if red, but none of them worked. So probably I'd need more hint to solve it, if that would be OK with you. :)
DeleteAfter:
DeleteF1:
FWD
If Blue goto F1
You'll be on a non-blue square, so...
If Green goto F2
In F1 you'll now be on a red square so..
FWD
FWD
Left
F1
Play with that.
Ahhh, I read it wrong and thought you were talking about 320! Now I found the solution for 137 and learned how to solve this type of puzzles! Thank you so much!
Delete320:
DeleteSome clues...
You're starting on a red, facing right.
After one loop you'll be on a green, facing right.
After next loop you'll be on green, facing right.
Hi thanks. I actually tried sth like that earlier and it ended up with the robot being on the green in the last row facing right. Then I had no clue how to proceed after that.
DeleteSo have you solved it? or do you need more clues?
DeleteNo I haven't. So more clues would be appreciated :)
DeleteF1 is...
DeleteF2 if Red, F3 if Green, F1.
Need more?
Aha! Now I got it! Basically: go up if green, go down if red. Thank you so much again!
DeleteHello, I would need some more tips please for 320 please.
DeleteF2 and F3 both begin with FWD.
DeleteSolution here:
http://www.robozzle.com/beta/index.html?puzzle=320&program=Otmsbbryeerqega
It seems I am addicted to this game lol. Here are two new puzzles which I just can't solve after thinking about them for days.
ReplyDelete1. Resonance 2 (241). I just don't see the pattern at all.
2. Handcuffs (628). The slots don't seem to be enough for the solutions I can think of no matter how. I am sure there is a way to solve it with the limited slots though which I just fail to see.
Hints would be appreciated as always! :)
Resonance 2 (241).
DeleteUse stack. So...
F1 begins with jump to F2.
F2 begins: FWD, F2 if Blue,
Hi, yes I have tried that,using a strategy similar to "missing red tile". The thing is, for example, when the robot come up from the 3rd row to the 2nd row, how do you make it move forward on three MORE blues AFTER using stack? There is no other color after the blues on the left, so how do you make the robot stop and go up?
DeleteF1 is:
DeleteF2, Left, Left, F1.
Would I need to use the "double stack trick" as in "stack memory tutorial 1"?
DeleteOtherwise, I just don't see, for instance, on the highest row how to make the robot move six MORE slots forward after "releasing" a simple stack?
628:
DeleteUses stack.
F2 is:
FWD, FWD, FWD.
Okay, now I got it (628)! Gotta use the slots "frugally"! :D
DeleteFirst 3 instructions of F2 are:
ReplyDeleteFwd, If blue then F2, If red then Fwd,
Okayyy, now finally I found the solution! I counted the blue tiles on the 1st and 2nd rows wrong, that's why I thought it's impossible with a "traditional" stack! Thank you again!
DeleteCould you give any hint for "fix the path" (193)? I have no clue how it's possible at all.
ReplyDelete193:
DeleteYou're going to want to paint every second tile green along that starting row.
Thank you! I found the solution. Didn't expect the robot could take that route!
DeleteWhat about number 55 (zig zig)? The pattern looks pretty obvious, but I am not able to implement it no matter how I tried. Any hint?
55:
DeleteLast instruction in F1 is "F2";
Last instruction in F2 is "F1".
Okay, thank you as always, solution found! The instruction is quite counter-intuitive!
DeleteCan you give more details please?
DeleteI understand it switches between turnin left and right. But I only get to the third red box.
I can't figure out how to align the switching after the multiple blues.
@roborock re "Can you give more details please?"
DeleteFor which one? 193 or 55?
55 please
Delete55:
DeleteFWD
R on red
L on green
F1 if Blue
F2
http://www.robozzle.com/beta/index.html?puzzle=55&program=Ofj5MaMI0uZabaa
Hi, I thought I understood using stack well enough, but I simply don't see how 259 (shortening) and 362 (learning stack 4) are possible. I am totally clueless after endless tries. Any tips?
ReplyDelete259:
DeleteYou are going to have 7 fwds, a left, a return to F1.
Some of those forwards will need colouring :)
362:
DeleteThis one IS stack so normal stack beginning:
F1: F2, F1
F2: FWD, F2 if blue, ?, ?
259: wow I have never thought I could use such a method!
Delete362: this one is solved too. Earlier I couldn't make the robot to reach the lowest green slot. Turned out that the robot has to go back to F1 one more time to make that!
Thank you so much again!
This comment has been removed by the author.
Deleteplease puzzle 10527 , he really block me
ReplyDeleteI didn't really solve this; just trial and errored!
DeleteI started with:
F1: Left if Blue, Right if Red, FWD, F1
That seems to run infinitely but doesn't get the stars.
So I tried first instruction: F2 if Blue
Then F2: Left, FWD
And somehow that did it!
10527, someone want solution or hints?
DeleteHi could you please assist with 1844?
ReplyDeleteApperently there is no need for F2
I finally managed to solve 1844 this morning.
ReplyDeleteIndeed no need for F2, instead just a recursive F1.
This is how I proceeded:
F1:
If blue change to red
FWD
If blue turn RIGHT
If red LEFT
F1
Well done!
Deleteand thanks for coming back and posting the solution. I wish more people would do that!
Hi, wondering how I can "remember" info (beyond just counting which I understand) in a *single* recursive function...specifically, puzzle 11299 which has me stumped. Any hints/assistance? (Or full solution would be fine, after hints.)
ReplyDeleteStumped here too!
DeleteAnyone know how to do these?
I got close - forward, F1 if blue, left, F1 if red, right, forward - which leaves a right turn on the stack for each red square passed before the green square, and leaves a right AND left turn (effectively no turn) on the stack for each blue square passed before the green square - and leaves a forward on the stack for each blue or red square - which is almost perfect, but the counts don't quite match up. Hence the name "shortened" spiral I guess. (Throwing a "forward if green" in just before the final unconditional forward lets me get past the first unmarked turn, but no others.)
DeleteCan you help me finish it up from here? :)
Got it! (11299) - Forward, F1 if blue, forward if green, forward if blue, left, F1 if red, right.
ReplyDeleteBrilliant!
DeleteWell done.
For puzzle 13827, "level 13", I can't figure out the necessary trick. The solution is likely simple, but how does one change from one instruction set (fwd, if blue rt + fwd) to the next (fwd, if blue lt + fwd)? Insight appreciated. :-)
ReplyDeletePuzzle 8478, at
ReplyDeletehttp://www.robozzle.com/puzzle.aspx?id=8478
The most direct solution uses 7 steps, and is also the most popular solution. There is another solution which uses only 5 steps, which only a few solvers have found. I'm trying hard to find this "best" solution, but it eludes me. Might anyone here know how this is achieved?
How we solve level 13
ReplyDeleteyou need help with level 13
DeleteCan Somebody assist me with 1756?
ReplyDeleteSure
DeleteF2 is:
FWD, FWD, FWD, Left.
Most of F1 is:
F2, ?, ?, ?, F1.
Can you guess the rest?
Thank you!
DeleteI have solved it in a slightly different way:
F1:
FWD, FWD on blue, FWD on blue, left on blue, F2.
F2:
Right on green, left on Red, left on Red, F1.
Nice.
DeleteCan anyone help with tubes solution
ReplyDeletehttp://www.robozzle.com/beta/index.html?puzzle=2309&program=OerMfeerIhmdaaaa
Deletecan you pls solve 192 ?
ReplyDeleteOr hints if you want ! I am stuck, I manage to pass the 3 first bridges but then my program doesn't turn the right way
DeleteI'm just looking at it now but I fear it is beyond me!
Deletecan you help me with 192 ?
ReplyDeleteI need help with 468
ReplyDeleteF2: R, Fwd
DeleteF1 will have a Fwd, R, Fwd, L and a "goto F@ if green" somewhere.
Try with that first but solution here:
http://www.robozzle.com/beta/index.html?puzzle=468&program=OgHrKbbXWaeaa
I need help with 468
ReplyDeleteHello can you please help me with 944? I assume I need stack things but I don't know what.
ReplyDeleteNo stack!
DeleteF2 just extends F1.
i.e. the end of F1 calls F2; the end of F2 calls F1.
So it's really just 5 instructions.
Hello I need some help with 3390 please
ReplyDeleteOnly 4 instructions needed.
DeleteLast one is "F1".
So you will loop several times.
After each loop you will be one square nearer the star and facing right!
Solution:
http://www.robozzle.com/beta/index.html?puzzle=3390&program=OgIWaaiaaa
It's the same as 8644 (one of mine :)).
DeleteThank you that was great and also a nice hint.
Delete539 please
ReplyDeletehttp://www.robozzle.com/beta/index.html?puzzle=539&program=Oejjdedcb1qAqba
DeleteTHANK YOU .
DeleteAS you are in good moon can you help for for the 634, I am block on the green turn
thanks
http://www.robozzle.com/beta/index.html?puzzle=634&program=OfPjdaIIKMaadaa
Delete539 please
ReplyDeleteplease can you give help on 539
ReplyDeleteCan someone help with the 10035?
ReplyDeleteFwd, if Blue: Left, if Blue:F2, F1
DeleteThanks!
DeleteHello! Need somme help with the 8808 please !
ReplyDeletehttp://www.robozzle.com/beta/index.html?puzzle=8808&program=OerMgeerIemaa
DeleteHi could you please assit with 1097.
ReplyDeleteYes that's a good one.
DeleteThe red and green squares off the corners are irrelevant.
Use the stack and the colored squares in the middle.
Solution:
http://www.robozzle.com/beta/index.html?puzzle=1097&program=OdmmigYmeaa
Thank you. It worked!
DeleteWith the same method I've also managed to solve 171, 330 etc. Basically stack puzzles.
But something still boggles my mind
Can you please help me understand how does that single fwd usually at the end of F2 iterate itself until the robot get to a corner and then proceed with the remaining stacked instructions on F1 (turn). A bit tricky for me to understand.
When a computer program (a list of instructions) gets interrupted (ie stop doing that and go and do this), it doesn't forget about the remaining instructions. it pops them on a stack to come back and do later.
DeleteIf it's interruption then gets interrupted, it pops those instructions on to the stack.
IN this Robozz;e example, it is repeatedly getting interrupted before a "Fwd" instruction.
Although it is getting called back to run the same function over and over, it is the same as if it got called from F2 to F3 and from F3 to F4 if they all had the same instructions.
If you use the beta version of Robozzle you can see the stack build up...
http://www.robozzle.com/beta/index.html?puzzle=1097
Thank you for your explanation.
DeleteIt's much clearer.
Ps: I'm learning computer programing, this will probably be helpful to me.
First, thank you for your blog.
ReplyDeleteCould you please give any hints for puzzles 249, 513 and 446?
249 and 513 are beyond me!
DeleteSome really complicated stack building that I can't figure out.
446 is possible. Some kind of looping along the path and turning on red or maybe there are enough spaces for a full listing of instructions. I'll try later.
Hi @Rob Bozzle, it'd be so kind if you could please share a hint regarding 446. My intuition was to program "a looping along the path" as you suggested. But I just can't make it work ☹️🔫
DeleteI'd be happy to share what I already have set up by email or any other channel!
@TheBedouin I've solved 446 in the past but so long ago I can't remember how! Sorry.
Deleteplease give the solution of puzzle id 102 (Two kinds of memory )
ReplyDeletehttp://www.robozzle.com/puzzle.aspx?id=102
Sorry. 102 is beyond me!
Delete:(
Could you please assist with the solution for 811
ReplyDeleteYou would go:
DeleteFwd, Left, F2 if Green...
http://www.robozzle.com/beta/index.html?puzzle=811&program=OebjdefHqaaaa
Thank you!
DeleteDo you have a Idea how to get 318 down to 8 blocks?
ReplyDeleteI manage 9 (4,3,2) but it seems like I need to take a step forward on green before counting down. Can't figure out how to squeeze that into 8 blocks.
http://www.robozzle.com/beta/index.html?puzzle=318&program=OkmeeeaaaaakzMOaaaaaakmeaaaaaaaa
No, sorry that's beyond me.
DeleteHopefully someone else can step up and enlighten us?
Roborock, I'm studying the solution you came up for 318.
DeleteMan, your brain comes from a different galaxy 🌠👽😅
Hi Rob: Have you any hints please for 'Branches' in the original (JavaScript) set of puzzles?
ReplyDeleteTIA.
Number 53?
DeleteIf it is 53 I'm afraid I don't know how to do it!
Delete352 please
ReplyDeletehello, you have solution to 39 and 587 pls??
ReplyDeletethanks in advance
39:
DeleteF2: F,F,L
F3: F,F R
http://www.robozzle.com/beta/index.html?puzzle=39&program=OkmqbdmqbfmqbfedHGgcHba
587
DeleteF1: F, F2 if green, L if red, F1
http://www.robozzle.com/beta/index.html?puzzle=587&program=OerMgeebHiaa
thanks!!!!
Deletehello,you have solution for 39 and 587 pls???
ReplyDeletethanks in advance
Did someone manage to solve 201 and 276 please?
ReplyDeleteBoth direction?
ReplyDeleteHi im stuck on simple cross 2 , ID 944 any clue you could give me ?
ReplyDeleteFwd, Fwd if Green, Turn, Turn if Green.
DeleteI need help for 944 PLEASE !!
ReplyDelete944:
DeleteFwd, Fwd if Green, Turn, Turn if Green.
http://www.robozzle.com/beta/index.html?puzzle=944&program=OeXWGrCqaaa
352 both directions pleeease
ReplyDeleteHi! I need help with 2588 (Two Reds Part 2) please if anyone has any clue it would be helpful
ReplyDelete2588
DeleteUse stack.
F1: F2, Left, F1
F2: Fwd, F2 if Blue, ...[try stuff here]
http://www.robozzle.com/beta/index.html?puzzle=2588&program=OdmiikYmacbaa
DeleteHi! i need help with 2588 (Two Reds Part 2) if anyone has any clue it would be really helpful pls!!
ReplyDelete291 please. I tried it a lot but couldn't solve. Thanks.
ReplyDeleteNah I can't do it.
DeleteFrom the comments (http://www.robozzle.com/forums/thread.aspx?puzzle=291) seems that it can be done 2 ways: either getting the top left star first, or painting the red squares blue and the subsequent square green, but I haven't been able to do it either way!
Please post if you figure it out.
OK, will do it. Thanks.
DeleteI have posted the question in Puzzling Stack Exchange as well: https://puzzling.stackexchange.com/q/119678/64563
There, no one has solved it yet. I will add bounty points to encourage solutions :)
Hello sir. I got solution on puzzling forum: https://puzzling.stackexchange.com/a/119709/64563
DeleteBig hint: Turn back and go, repeat this step if blue; if red then starting point of the puzzle (and I know how to do the rest) :)
Spoiler alert:
F1 - left, left, go, F3
F2 - go, repeat if blue, go, right, F2
F3 - F1 if blue, F2 if red
Brilliant!
DeleteWell done.
and thanks for posting.