Solo technical check using Codex browser controls, not a family-group playtest: I completed all three puzzles in the published browser build. In puzzle 1 I deliberately tried ADCB, then used the hint. Treating BREAD/CHEESE as a pair gave a useful next step without revealing the full order. The spaced answer “A D B C” was accepted.
The BLUE hint distinguishes two bags from two apples, and the final puzzle accepted “CB” for the B/C pair—the instructions do not require an order there. The final explanation also explains why A+D is invalid despite totaling 9. Those are helpful details.
I did not find an instruction blocker in this check. I have not tested printing, children’s understanding, group enjoyment or session length.