Brain Blow Level 60
📝 Walkthrough
Overview
The screen spreads out several hand gestures from rock-paper-scissors: three pairs of scissors, two dark rocks, and one blue sheet of paper in the lower right. The prompt says paper must win, so the goal is to eliminate every gesture that beats paper while leaving paper as the surviving side. The usual RPS rules apply: rock beats scissors, scissors beat paper, and paper beats rock. The solution works through the chain in two stages, first using rock against scissors and then using paper against rock.
- Difficulty: Regular
- Estimated moves: 5
Step-by-Step Solution
- Read the prompt requiring paper to win, and identify the three gestures on screen: the three red-handled scissors, the two dark stones that are rocks, and the blue lined sheet of paper. Remember the rules: scissors cut paper, rock breaks scissors, and paper wraps rock.
- Deal with the scissors first, because scissors are the only gesture that beats paper. Take one of the rocks and drag it onto the first pair of scissors. Rock crushes scissors, so that pair is eliminated.
- Repeat the same rock-against-scissors move for the second and third pairs of scissors, dragging a stone onto each until every pair of scissors has been broken and removed from the screen.
- Now only paper and the remaining rocks are left. Drag the blue paper sheet onto one rock so the paper wraps and covers it; paper beats rock, and that rock is removed.
- Move the paper onto the last remaining rock as well, covering it until every rock has been beaten. With the scissors and rocks both gone, only the paper remains as the winner.
- Once all opposing gestures are cleared and the paper stands alone, the green checkmark appears and the completion screen confirms that paper won the round.
Strategy & Reasoning
In rock-paper-scissors there is no single gesture that beats every opponent, so paper cannot win on its own against both scissors and rock. The level expects you to use the RPS chain as a tool: rock handles the scissors, which paper cannot beat directly, and then paper handles the rock. Breaking this chain in the right order keeps paper from being attacked by scissors before those scissors are gone.
Trying to put paper against scissors first fails because scissors cut paper, which would remove the very gesture you are supposed to protect. That is why the rocks are committed to the scissors first, before paper is brought in against the stones. After the two-stage elimination, the checkmark appears over the paper alone, which shows the level accepts that all paper-beating and paper-losing matches have been resolved in paper's favor.
Tips & Common Mistakes
- Remove the scissors first using a rock; do not drag paper onto scissors, because scissors cut paper and would destroy the gesture you must keep.
- Use each rock against the scissors, then use the paper against the remaining rocks, following the rock-breaks-scissors and paper-covers-rock rules in that order.
- Clear every scissors and rock before judging the result; a single leftover opponent means paper has not won the round yet.