Saw this trick already otherwise i would not have figured it out so soon but it was a bad thing(at least for me) that she said it mid-mystery 7/10 simple but not bad also keeping a straight face after drinking the water was a good move(even though if it was poison they would not feel anything...
Another locked room, probably her favorite type of mystery. When you hear someone literally saying out loud smth they are plotting, either they are stupid (cough cough Yoshikage Kira) or they know you are there, if they talk about it in great detail it's probably the 2nd option, you should just...
Not bad cold reading in the first half 7/10 also (not sure about this one) if he said a different color that was completely incorrect she might have said the actual color that would "benefit" the mc ( she would prob say something close to 'how were you completely wrong?' etc.)
Not a bad mystery but cliché, that's not a bad thing at all, this manga is more about their relationship after all but it would be better if the mysteries were good if it's one of the main points, would be better if the solution was shown otherwise it's just a theory that could have no meaning 5/10
No mysteries this chapter, and if that character's gender was a mystery 2/10 not sure tho as i read so much that i can spot traps, didn't really get this chapter tbh
Honestly leaving suck a small hint as a wire and then still hiding inside is really bad, because that will be the last thing they will spot and also a lot of detectives check everything, even when they already found a clue, so that was pretty stupid. 4/10 murder