K9 Deck #773885 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 49/100 (±6 · Confidence: Medium)

• Primary strategy: Midrange
• Secondary strategies: Stun, Toolbox
• Format: master-duel

Legality

Main 40 / Extra 15 / Side 0 — status: Legal.

Identity & game plan

• Win condition: K9 Xyz pressure: Rank 9 K9-X Werewolf and K9-X Ripper/M (3300 and 3100 ATK, multi-attack and piercing) reached through K9-X Forced Release and Release Restraint from a Rank 5 K9 Xyz; Rank 5 K9 Xyz boards (K9-66X Jacks, K9-00 Hound, K9-17 Ripper) plus off-archetype Xyz such as Vallon and Number C104
• Turn 1 (going first): Open a K9 starter (Noroi, Izuna, Jokul or Lantern normal summon without tribute when the opponent holds 2+ cards, or Chaotic Elements / A Case for K9 to search), go to a Rank 5 K9 Xyz, then use Forced Release or Restraint to reach Rank 9. Hold Ash Blossom, Infinite Impermanence or Ghost Ogre for the opponent's first response.
• Turn 2 (going second): Use the six-card hand to present 1-2 hand traps (Ash, Droll, Ghost Ogre, Maxx C, Infinite Impermanence) and force interaction before the opponent's board is set, then convert the first K9 Xyz into a Rank 9 threat.
• Recovery: Recover through Chaotic Elements and Case for K9 searches, Lantern and Jokul from hand or GY, Fuwalos and Purulia draw triggers, and Lupis, which cannot be targeted by card effects while it is an Xyz material.
• After siding: No side deck is registered (side_count 0), so there is no post-side plan. Any change in matchup must come from main deck swaps alone.

Why it scores here

The deck reliably opens a K9 starter: the core K9 bootstraps (Noroi, Izuna, Jokul, Lantern) can be normal summoned without tribute while the opponent holds two or more cards, and the probability of at least one archetype-core card in a going-first opening hand is about 0.82 (Inferred). Its interaction density is high for a Midrange list: eleven hand traps or negation cards (Ash Blossom, Infinite Impermanence, Ghost Ogre, Droll and Lock Bird, Maxx C), plus removal on Disablaster, K9-X Forced Release, and Jacks, gives a 0.88 chance of at least one hand trap in a going-second six-card hand (Inferred). Conversion and closing rely on the K9 Rank 9 route and the 3300-ATK Werewolf, but no recorded boards exist, so the ceiling and median are text-based estimates. The score does not come from K9's popularity or from averaging card scores: the deck has no side deck, only 24 percent of the archetype's core cards are present, and eight of its fifteen Extra Deck Xyz belong to other archetypes, which splits material routes and lowers the structural score.

Dimension scores

How the score was computed

Strategy profile: Midrange. Structural ≈ 57.4, Going First ≈ 62, Going Second ≈ 64, Meta = provisional, Tournament Reliability ≈ 47. Modifiers: No side deck (-3); Engine conflicts across archetypes (-2); Banlist exposure (-1). Final formula: 0.80*Structural + 0.20*TournamentReliability (Meta provisional)

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.82 · key two-card combo ≈ — · full-brick estimate ≈ 0.18 (all Inferred)
• Combo output: best PowerIndex —, median —, board-per-starter —
• Turn order: 0 going-first lines vs 0 going-second lines

Strengths

• Dense hand-trap and negation package (11 hand traps or negation cards) covers both going-first and going-second turns
• Multiple independent K9 starters (Noroi, Izuna, Jokul, Lantern) reduce dependence on a single card
• High-ATK Rank 9 finishers (Werewolf 3300, Ripper/M 3100) provide real closing power once a Rank 5 K9 Xyz is live

Weaknesses

• No side deck, so no adaptation after game one
• Only 6 of 25 usage-core cards present; the deck is a mixed-archetype build rather than a standard K9 list
• Eight off-archetype Xyz and the Number, Umbral, and Chronomaly lines need material routes the list does not reliably supply

Critical choke points

• Reaching a live Rank 5 K9 Xyz on turn 1 or 2, since Forced Release and Restraint both depend on it
• Single-copy K9-X Forced Release and K9-LC Release Restraint: one dead copy removes the Rank 9 route

Recommended changes

Evidence & confidence

• Verified: Legal status, 40 main, 15 extra, 0 side in Master Duel size rules; Banlist: Maxx C and Crossout Designator Limited 1; Droll and Lock Bird and The Fallen and The Virtuous Semi-Limited 2; Exact archetype purity 38.2 percent; 13 Xyz, 1 Synchro, 1 Fusion in Extra Deck; Usage core present: 6 of 25 (24 percent)
• Inferred: At least one archetype-core card in going-first hand ≈ 0.82; At least one hand trap in going-second hand ≈ 0.88; Forced Release and Restraint route to Rank 9 K9 Xyz; Lupis resistance to targeting as Xyz material; Hand-trap dependence and brick risk
• Provisional: Meta power and format fit (no dated metagame sample); Floor and median output (no recorded boards)
• Data gaps: no combos supplied — combo floor/median/ceiling is text-only inference no tournament link — archetype meta-share and per-pilot match record absent no win-rate telemetry exists in YGOVN (going-first/second, matchup, game-level, brick/starter/OTK rates) — those signals are Inferred or Unknown Meta Power is Provisional unless a dated metagame sample is supplied deck title is null, so the deck is identified only by id and archetype