Containment of SCP-112 is passive: the anomaly is bounded by its own hostname and does not propagate beyond https://mahjong-solitaire.bisks.net/ under any observed condition. As a Euclid-class object, personnel are advised that SCP-112's behavior is only partially predictable under repeat interaction; researchers should log anomalous outputs to the site's own Addendum before treating them as expected behavior.
SCP-112, referred to by Foundation staff by its working name "mahjong solitaire," classified as a recreational-hazard anomaly, is reachable at https://mahjong-solitaire.bisks.net/.
The clearest surviving account of the anomaly's function is its own front-page copy, reproduced below:
an accessible mahjong pairs game: tap two matching tiles to clear them, no dragging, no timer. free tiles get a blue outline and lift up; covered or boxed-in ones sit flat and dim, so the stacking is always legible at a glance. undo and restart live in the toolbar, and a "step down a level" button is one tap away the moment a board runs out of moves. four difficulty levels, guaranteed-solvable deals, big tap targets throughout. @heartpunk.com asked for something aimed at intense accessibility for older users on older phones — this is that.
Foundation awareness of SCP-112 began with a tagged mention from the individual on record as @heartpunk.com. First logged 2026-07-25.
Addendum 112-A: Euclid remains the Foundation's largest classification by volume. SCP-112 is unremarkable within that population and is not flagged for expedited review.