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--- wiki:style_fallback [2026/09/28 22:50] – Initial verified documentation wikiadmin
+++ wiki:style_fallback [2026/10/01 05:17] (current) – Document v6.6.22 combined Mania styles wikiadmin
@@ Line 1: / Line 1: @@
 ====== When Mania styles broaden ======
+Style exhaustion fallback prefers fresh strict matches, then weaker evidence and other eligible native styles.
+^ Availability | Mania 4K and 7K when enabled |
+^ Documentation status | Single-style fallback works now; combined-style policy requires v6.6.22+ |
+^ Behavior reference | v6.6.22 · reviewed 2026-09-30 |
 Small style pools can run out of fresh choices. The requested style remains preferred, but the bot can use weaker matches and then other native styles to avoid recent repeats or maps already reserved in the queue.
-Fallback softens structural or farm evidence only. Difficulty, length, pass-count and age filters still apply, and native 4K/7K boundaries remain in place. Farm confidence floors are retained. Converts are currently limited to Variety.
+Fallback softens structural or farm evidence only. The active difficulty, length, pass-count and age filters still apply, and native 4K/7K boundaries remain in place. Farm confidence floors are retained. Converts are currently limited to Variety.
 The implementation avoids the last ten played or skipped rounds. For Farm, stronger eligible fresh charts are consumed before weaker evidence and other-style fallback. This preserves a usable room without claiming every fallback chart is a strict match.
+===== Several styles at once (v6.6.22+) =====
+For a request such as ''.style jack chordjack ln'', fresh charts matching all three tags come first. After those are used, charts with two requested tags beat charts with only one. Within the same tier, fewer unrelated tags win. For ''.style stream|chordjack'', a clean Stream-only or Chordjack-only chart is preferred over a chart tagged Stream, LN and Jack when no fresh chart has both requested tags. Unlike the single-style fallback above, combined requests stay within maps matching at least one requested style; unrelated maps are not added simply to fill the pool. If all eligible matches have been played recently, the oldest available match may repeat.
+Starting with v6.6.22, Mania fallback is not announced in lobby chat and ''.pool'' does not expose a fallback label. Use [[commands:style|.style]] and [[commands:queue|.queue]] to see the preference and visible maps. Check [[status:start|Live lobbies]] for the active room version.
 Use [[commands:pool|.pool]], [[commands:style|.style]], and [[commands:queue|.queue]] to understand the current selection. See [[updates:v6_6_14|v6.6.14]] and [[updates:v6_6_15|v6.6.15]].
+Before v6.6.22, the bot may announce when even fallback cannot avoid a recent repeat. From v6.6.22 onward, that choice is silent. Unavailable maps, other key modes, and converts are not admitted as style fallback. This is distinct from the separate [[wiki:map_selection|sparse catalog expansion policy]].
+===== Worked example =====
+A fresh non-Jack map after a Jack preference can be a fallback if strict fresh choices are exhausted. Check the queue and current map details; from v6.6.22 onward there is no exhaustion notice.
+===== Limitations =====
+The active eligibility filters and native key boundaries remain. Converts are not style fallback; an exhausted entire eligible catalog can require the oldest available repeat.
+===== Related articles =====
+See [[wiki:pattern_atlas|a related guide]] and [[wiki:start|all features]].