# Logic Puzzle from the International Space Station

• Short answer: turn to page 110 – boboquack Sep 20 '17 at 5:59
• I don't have the book ~~ I don't know where it comes from – Patrick Sep 20 '17 at 6:06
• i cant read this - have you got a text version? – JMP Sep 20 '17 at 7:04
• Maybe you should try it yourself first – feelinferrety Sep 20 '17 at 13:47
• It looks pretty mechanical. For example: Rule 1: Ariel isn't Commander - so put an X in the box where Ariel and Command meet. Then do likewise for Malik and Sasha and the next two jobs. Then repeat for the next rule. By the time you get to the bottom, you either have your answer, or you have enough information that going through the rules again will allow you to put extra crosses, and ticks. Repeat until done. – Ben Aveling Sep 20 '17 at 14:05

This is my solution.

Table:

Person Role Lead Assist
Arielle astronaut space walk maintenance
Malik science officer observation space walk
Neil first flight eng safety supply replen
Ron commander maintenance safety
Sasha second flight eng supply replen observation

Really not sure how to post the process, since it there were many small steps.

• is there any clues for sentence 9 and 10?? – Patrick Sep 20 '17 at 18:37
• Those clues helped fill in the bottom of the segment that crosses Roles and Leads. I also made a few assertions, and traced them out. When I got as far as I could go, I tested those assertions against 10 mostly but other clues were involved. – Matt Sep 20 '17 at 18:39
• I get the point. You are saying sometimes we just need to try a little bit. like we assume who is what and test whether it is right or not~ – Patrick Sep 20 '17 at 18:49
• Right, but you want to do that at a place when there are only two options. – Matt Sep 20 '17 at 18:50

There are two key pieces of info that need to be inferred from multiple clues at the same time. Instead of solving the whole puzzle for you (which I did), I will instead give you what the clues were.

1. Clue 5 states that Neil is going to assist in supply replenishment or station maintenance. Clue 4 states that the leader of the station maintenance is either Neil or Ron. If Neil were leading that mission, then he could not assist in it as well (main problem), so he would therefore assist in supply replenishment. However, #4 also states that this cannot happen. Therefore, Ron is leading station maintenance, and Neil assists in Supply Replenishing.
2. At some point you will come to clues 7 and 8 which indicate consecutive names issues. One of the items will only have two names available to choose from, and the other will have three. By looking closely at the names, you will see that there is only one possible solution for these two clues. If you still run into problems with this one, let me know and I can expand (don't want to give too much away yet).
3. Clues 9 and 10. If you have followed everythign lgocially so far, your grid should be filled out like this...

Note that Clue 10 states that the 2nd Flight Engineer isn't leading the mission assisted by the Commander. Since the 2nd engineer is leading the Supply mission, you can mark off that assist value under Commander (Cell D12 in my screenshot. Keep using that type of "subtractive logic" through the rest of Clue 10 and 9, and you will end up with the final solution.

• Person Role Lead Assist Arielle Astronaut Space walk Station maintenance Malik Science officer Earth observation Space walk Neil Commander Safety briefing Supply replenishing Ron First flight engineer Station maintenance Safety briefing Sasha Second flight engineer Supply replenishing Earth observation – Patrick Sep 20 '17 at 17:43
• I think something wrong happened i don't know where. – Patrick Sep 20 '17 at 17:44
• What were you trying to do Patrick? – APrough Sep 20 '17 at 17:53
• I solved the question. but I was being told the answer is wrong – Patrick Sep 20 '17 at 17:56
• is there any clues for sentence 9 and 10? – Patrick Sep 20 '17 at 18:37