K9 Deck #773946 — Yu-Gi-Oh! Master Duel

Deck — Deck Power Evaluation

Final Contextual Deck Power: 57/100 (±6 · Confidence: Medium)

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

Legality

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

Identity & game plan

• Win condition: K9 Xyz pressure: Level 5 K9 Normal Summons feed Rank 5 K9 Xyz (K9-17 Ripper, K9-66X Jacks), which chain via K9-X Forced Release or K9-LC Release Restraint into Rank 9 K9-X Werewolf or Ripper/M for multi-attack and piercing damage (Inferred from card text).; N.As.H. Knight / CXyz N.As.Ch. Knight and Number C104 / C106 Xyz lines supported by 3 Mulcharmy Fuwalos (Level 4) as Rank 4 material (Inferred).
• Turn 1 (going first): Open with Level 5 K9 Normal Summons (Noroi, Izuna, Jokul, Lantern, Lupis) when the opponent holds 2+ cards, use A Case for K9 or Jokul/Lantern to search, then go to a Rank 5 K9 Xyz and hold Ash Blossom and Infinite Impermanence for the opponent's turn (Inferred).
• Turn 2 (going second): Use the 6-card hand to present hand traps (Ash, Impermanence, Droll, Maxx C) against the opponent's first summon, then Xyz into a K9 Xyz that can negate or destroy with Disablaster, Cyber Dragon, Ripper or Jacks effects (Inferred).
• Recovery: Rebuild from K9 Level 5 monsters in the Deck via Jokul/Lantern search and A Case for K9, and use Chaotic Elements to add a Level 5 or higher LIGHT/DARK Pyro/Aqua monster (Inferred).
• After siding: Not applicable in the evidence: the deck runs 0 side cards and Master Duel does not use a side deck in a Bo1 duel; post-side adaptability is structurally absent.

Why it scores here

The deck reliably opens an engine: the 12 K9 Level 5 Normal Summon copies give P(at least one core in a 5-card opening hand) of about 0.85 (hypergeometric, Inferred), and the K9 search pieces (A Case for K9, Jokul, Lantern, Chaotic Elements) add redundancy. It protects that start with 9 hand traps and 11 negation-text cards, which lifts interruption resilience and interaction quality. Closing power comes from Rank 9 K9-X attackers with multi-attack and piercing, scored from card text and not from any recorded results. The deck loses points for engine conflicts: 14 distinct Extra Deck cards span K9, Number, Infinitrack, Kashtira, Artifact and Umbral lines, and at least Kashtira Arise-Heart and Artifact Durendal have no matching support in the Main Deck. Popularity and archetype usage did not earn points, and no card scores were averaged into the result.

Dimension scores

How the score was computed

Strategy profile: Midrange (D13 dropped and renormalised over weight sum 95). Structural ≈ 64, Going First ≈ 67, Going Second ≈ 65, Meta = provisional, Tournament Reliability ≈ 58. Modifiers: Engine conflicts (-4); Single-copy choke points (-2). Final formula: 0.80*Structural + 0.20*TournamentReliability + ContextModifiers (Meta provisional); 0.80*64.36 + 0.20*58 - 6 = 57.1

Probability & combo summary

• Opening a starter: P(≥1) ≈ 0.85 · key two-card combo ≈ — · full-brick estimate ≈ — (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 suite (Impermanence x3, Ash x3, Droll x2, Maxx C) that protects the engine on both turns
• Multiple Level 5 K9 starters (12 copies) give a high starter-access rate
• High-ceiling rank-9 K9-X attackers with multi-attack and piercing
• Negation and removal breadth across Disablaster, Cyber Dragon, Crossout, Umbral Horror and Jacks

Weaknesses

• Off-archetype spread (purity 40%) across Number, Infinitrack, Cyber, Seventh, Artifact and Kashtira lines
• Dead or conditional Extra slots: Arise-Heart has no Kashtira support, Durendal has no Artifact support, ZEUS needs an Xyz battle
• No side deck, so no adaptability outside the duel
• Opponent-hand condition on Level 5 K9 Normal Summons (must have 2+ cards in hand) for the no-tribute summon

Critical choke points

• K9-X Forced Release, K9-LC Release Restraint: single copies gate the rank-9 chain
• Starter needs one of 12 K9 Level 5 monsters in an opening hand, about 0.85 (Inferred)

Recommended changes

Evidence & confidence

• Verified: Legal, 40 Main / 15 Extra / 0 Side within master-duel size rules; Limited and Semi-Limited copies within legal limits: Crossout 1/1, Maxx C 1/1, Droll 2/2; Archetype purity 40%, 22 of 55 cards are exact K9 names; Card stats and text from resolved card excerpts
• Observed: Usage statistics: K9-66a Jokul and K9-17 Izuna at 100% archetype inclusion
• Inferred: P(at least one K9 core in 5-card hand) 0.85 and P(at least one hand trap in 6-card hand going second) 0.81; Rank 9 K9-X chain via Forced Release or Restraint, multi-attack and piercing; Dead Extra slots for Arise-Heart, Durendal and conditional ZEUS; Going-first and going-second scoring
• Provisional: Meta Power and D13 matchup fit: no dated metagame sample
• Data gaps: No combos supplied (combos_evidence has 0 boards): combo floor, median and ceiling are text-only inference No tournament link: archetype meta-share and per-pilot record are absent No win-rate telemetry for going-first, going-second, matchups or starter rates Meta Power is provisional Usage-statistics in_this_deck flags conflict with the deck's card list: Number C104 Umbral Horror, CXyz N.As.Ch. Knight, N.As.H. Knight, Number 104 Masquerade, K9-X Werewolf, K9-66X Jacks, ZEUS, and K9-17 Ripper appear in the Extra list but are flagged in_this_deck=false, so core_present_pct=24 is unreliable; by name match 14 of 25 core cards are present No side deck in the export, so post-side claims cannot be scored