Offer Semuta choice after winner battle card batch

docs/CURRENT_STATUS.md

@@ -7,21 +7,21 @@ Expansion starts and full rules/publication acceptance remain gated.**
 ## Current checkpoint and work
 
 The explicit [Semuta development preview](SEMUTA_SOURCE_UPDATE_20260907.md#30-september-2026--bounded-clean-discard-runtime)
-pauses a clean public ordinary-card discard, used Box after paid search,
-either clean Ornithopter retirement, public used Distrans after private
-transfer, final definite Truthtrance, movement-order Juice of Sapho
-or one winner-selected battle card with no pending reward. Every seat
-sees the same neutral offer regardless of hidden Semuta possession.
-An early-ended flight advances the queue; a completed flight without
-BG/Ecaz/Moritani entry reaction resumes its one committed arrival.
-Private gifts, answer history, Sapho order and resolved battle remain
-intact through claim or decline. A holder with a free hand slot can
-recover the fresh other-player discard and dispose Semuta. Minimal
+pauses clean public ordinary-card, paid Box, retired Ornithopter,
+private Distrans, final definite Truthtrance, movement-order Sapho
+and winner-selected battle-card discards without pending rewards.
+Every seat sees a neutral offer regardless of hidden Semuta possession.
+A sole eligible card transfers on commitment; a simultaneous
+winner-card batch first requires public commitment, then reveals
+only to that holder the eligible fresh faces to select exactly one.
+Other cards remain in the pile and the resolved battle resumes once.
+The early-ended flight queue, completed-flight arrival, private gift,
+answer history and Sapho order also resume without replay. Minimal
 legal AI, exact JSON/SQLite continuation and competing-room CAS are
 connected. Phone width showed owned Commit and rival Continue without
-a private card face. Mixed arrival reactions, auction/battle Sapho,
-queued or promise-bound Truthtrance, multi-card/reward-pending battle
-discards, other producers, full-hand ordering, normal Richese starts
+a private card face. Mixed arrivals, auction/battle Sapho, queued or
+promise-bound Truthtrance, mandatory or reward-pending battle batches,
+other discard producers, full-hand ordering, normal Richese starts
 and deployed acceptance remain unfinished. Neutral passes and the
 free-slot guard are product safety choices, not publisher rulings.
 

docs/IMPLEMENTATION_STATUS.md

@@ -1,5 +1,37 @@
 # Dune implementation status
 
+## 30 September 2026 — Semuta choice among simultaneous winner cards
+
+The explicit Richese Semuta preview now recognizes a clean batch of
+two or more publicly revealed played cards selected by a battle winner
+for discard. The battle result and earlier mandatory cleanup are
+committed; all seats receive the same neutral offer. Only the actual
+Semuta holder with free hand space can commit, and only after that
+commit does their private view reveal the fresh candidate list.
+They must select exactly one. The other cards remain in the discard,
+Semuta is disposed once, and the resolved battle continues once.
+All-seat decline leaves the full batch in place.
+
+Genuine setup covers both a single winner card and simultaneous
+projectile/Shield selections, owner-only candidates after commitment,
+legal AI choice, explicit alternative human choice, stale foreign
+selection rejection, exact physical census and resource equivalence.
+An isolated migrated SQLite room restores the offer and later the
+committed selection without automatic progress, checks rival candidate
+privacy and authenticates the exact one-card choice. Other multi-card
+producers, mandatory/reward-pending battle frames, full-hand ordering,
+normal Richese starts and deployed acceptance remain gated.
+
+Independent rules and privacy/recovery reviews found no scoped defect.
+A direct production-engine run committed the two-card batch, showed
+only the owner both candidates and selected Shield while the other
+played weapon remained discarded. Phone-width local table fixtures
+showed two owned Inspect/Claim cards and a rival's candidate-free
+waiting state; the stale hand-help text was updated. `npm run check` passed
+typecheck, lint and 5,809/5,809 offline cases; `npm run build` and
+all 55 Vite development HTTP cases passed. No deployed revision
+was exercised.
+
 ## 30 September 2026 — Semuta after one winner-selected battle card
 
 The explicit Richese Semuta preview now pauses a clean single public

docs/RICHESE_COMPONENTS.md

@@ -12,7 +12,7 @@ Audited 6 September 2026. The ten physical identities and their readable face in
 
 - Player controls show both original plans, exact undialed counts or honest possible totals, the mode choice and a complete internal guide. No victim/death confirmation is added. The card stays physically reserved until standard cleanup; stale events, duplicate requests and corrupted source custody fail before resources change. All four AI profiles use public force possibilities, legal low-dial plans and revealed leader/bounty information. They preserve leader value when Artillery suppresses bounty and leave traitor/explosion precedence intact.
 
-- Semuta Drug now has an explicit bounded development preview for clean public ordinary-card, paid Box, either clean Ornithopter retirement, completed private Distrans, final definite Truthtrance, movement-order Sapho and one winner-selected battle-card discard; private gifts, unresolved promises, BG/Ecaz/Moritani arrival reactions, auction/battle Sapho and multi-card/reward-pending battle batches are not fresh targets. Other producers, full-hand ordering and normal Richese starts remain unfinished. Mirror Weapon and Juice of Sapho have separate bounded paths, not complete combined-mode certification. Other unfinished faction/module systems, mobile acceptance, difficulty-strength calibration and complete Advanced/expansion games still prevent goal completion. No start gate was removed.
+- Semuta Drug has an explicit bounded development preview for clean public ordinary-card, paid Box, retired Ornithopter, private Distrans, final definite Truthtrance, movement-order Sapho and winner-selected battle-card batches. A multi-card winner batch exposes candidates only after holder commitment and transfers one physical card. Private gifts, unresolved promises, reactive arrivals, auction/battle Sapho and mandatory/reward-pending battle batches remain outside scope. Other producers, full-hand ordering and normal Richese starts remain unfinished. Mirror Weapon and Juice of Sapho have separate bounded paths, not complete combined-mode certification. Other unfinished systems, mobile acceptance, difficulty calibration and complete Advanced/expansion games still prevent goal completion. No start gate was removed.
 
 The complete integrated validation checkpoint is recorded in [IMPLEMENTATION_STATUS.md](IMPLEMENTATION_STATUS.md).
 
@@ -112,12 +112,11 @@ supersedes the older inactive-card observations above for one
 explicitly opted-in Richese development profile. Neutral all-seat
 responses, physical one-card recovery, a provisional free-slot guard,
 minimal legal AI and saved continuation now work after clean public
-ordinary-card discards, the used Box after a paid search, early-ended
-Ornithopter or completed flight without reactive entry factions,
-clean private Distrans, final definite Truthtrance, movement-order
-Sapho and a single winner-selected battle discard without pending
-rewards. Queued questions, promise-bound answers, reactive completed
-arrivals, auction/battle Sapho, multi-card and reward-pending battle
-batches and other semantic discard families remain unconnected;
-full-hand ordering, ten-card inventory, cache custody and public
-expansion start gate are unchanged.
+ordinary-card, paid Box, retired Ornithopter, private Distrans, final
+definite Truthtrance, movement-order Sapho and winner-selected
+battle-card discards, including a committed owner-only multi-card
+choice. Queued questions, promise-bound answers, reactive arrivals,
+auction/battle Sapho, mandatory or reward-pending battle batches
+and other semantic discard families remain unconnected. Full-hand
+ordering, ten-card inventory, cache custody and public expansion
+start gate are unchanged.

docs/SEMUTA_DISCARD_CONTINUATIONS.md

@@ -35,13 +35,14 @@ sources. The final forces and move counter are held in the existing
 bound flight frame; claim or decline retires that frame and logs the
 arrival once. Mixed entry reactions remain unsupported for Semuta.
 
-A single winner-selected public played card now pauses on the existing
-`battleCleanup` frame after the battle is resolved and any earlier
-mandatory discard has retired. Its winner, combatants and card custody
-remain bound while every seat receives a neutral offer; claim or
-decline retires the frame before `finishBattle` runs once. Multiple
-cards, Moritani loser retention and pending Auditor, capture, tech,
-Face Dance or CHOAM rewards remain automatic without this reaction.
+Winner-selected public played cards now pause as one `battleCleanup`
+batch after the battle is resolved and any earlier mandatory discard
+has retired. The winner, combatants and all selected card identities
+remain bound. Every seat sees the same neutral offer; only a committed
+holder inspects the eligible batch and selects one of multiple cards.
+The others remain in the pile before `finishBattle` runs once. Moritani
+loser retention and pending Auditor, capture, tech, Face Dance or
+CHOAM rewards remain automatic without this reaction.
 
 ## Main findings
 

docs/SEMUTA_SOURCE_UPDATE_20260907.md

@@ -66,7 +66,7 @@ without opening ordinary expansion starts. It interrupts **one public
 ordinary-card discard, the used Box after a paid Nullentropy search,
 either retirement of a played Ornithopter in a clean flight, the used
 Distrans after a private transfer, a final definite Truthtrance,
-movement-order Juice of Sapho, or one winner-selected battle card
+movement-order Juice of Sapho, or a winner-selected battle-card batch
 without pending battle rewards**, provided the parent transaction is
 clean. Every seat sees a neutral fresh-discard opportunity regardless
 of hidden Semuta possession. An early-ended Ornithopter advances its
@@ -74,18 +74,18 @@ saved movement queue; a completed flight has committed its forces
 and resumes its one arrival only without BG, Ecaz or Moritani entry
 reactions. Distrans's gift stays private with its recipient. The
 Truthtrance answer/history and Sapho first/last queue are bound.
-The chosen winner battle card is already in the public discard; its
-resolved battle and remaining phase transition resume once.
+The winner's chosen played cards are already in one public fresh
+batch; its resolved battle and remaining phase transition resume once.
 
 Each seat can Continue; only the canonical holder with a free hand
-slot and a card discarded by another player can commit. The sole
-eligible fresh card transfers automatically in the same accepted action,
-then Semuta goes to the normal discard pile. The saved ordinary effect
-or Box parent resumes once; passing by every seat preserves the
-original discard and effect. No face from an undisclosed event is
-projected before commitment. Owner-only multi-candidate selection
-support exists in the reaction component and bot adapter, but no
-multi-discard producer is activated in this bounded runtime.
+slot and a card discarded by another player can commit. A sole
+eligible fresh card transfers automatically in that same action.
+Multiple eligible public winner cards instead open a committed,
+owner-only inspection and exact one-card selection; the other fresh
+cards stay in the pile and Semuta is discarded once. The saved
+ordinary effect or Box parent resumes once. No undisclosed face is
+projected before commitment. Other simultaneous discard producers
+remain unfinished.
 
 This neutral all-seat acknowledgement is a conservative **application
 policy**, not a newly discovered publisher timing rule. The explicit
@@ -93,9 +93,9 @@ free-slot requirement is a provisional safety guard, not the printed
 resolution of full-hand take-before-discard. Auction, CHOAM market,
 pending gifts, competing responses, completed Ornithopter arrivals
 with BG intrusion, Ecaz Ambassador or Moritani Terror, queued or
-promise-bound Truthtrance, auction/battle Sapho, multi-card or
-reward-pending battle discards and other typed producers retain
-their automatic continuation; Semuta cannot claim those events yet.
+promise-bound Truthtrance, auction/battle Sapho, mandatory/reward-pending
+battle batches and other typed producers retain their automatic
+continuation; Semuta cannot claim those events yet.
 The completed Box's selected search card stays private and its paid
 shuffle is not repeated when another seat takes the used Box.
 No source ruling is inferred from this omission. The

game/card-presentation.ts

@@ -40,7 +40,7 @@ export function richeseCardActionBlock(card: VisibleCard): string | null {
   if (definition?.card.effect === 'distrans')
     return 'Choose a recipient and card in the Distrans transfer panel.';
   if (definition?.card.effect === 'semutaDrug')
-    return 'Use the neutral fresh-discard response in the Semuta development preview. Clean public ordinary-card discards and the used Box after a completed paid search are connected; other discard events remain unfinished.';
+    return 'Use the neutral fresh-discard response in the Semuta development preview. Clean completed ordinary-card, paid Box, Ornithopter, Distrans, Truthtrance, movement-order Sapho and winner battle-card discards are connected; other producers and full-hand sequencing remain unfinished.';
   return definition && definition.card.effect !== 'karama'
     ? 'This Richese card’s effect is not implemented yet. You can inspect its rules.'
     : null;

game/engine.ts

@@ -5776,7 +5776,10 @@ function semutaOfferSupported(
       g.ornithopter || g.summonedWorm || g.wormRides.length > 0)) return false;
   return g.semutaPreview === true && g.status === 'playing' &&
     g.players.some(p => p.faction === 'richese') &&
-    entries.length === 1 && entries[0].publicFace &&
+    entries.length > 0 &&
+    (continuation.kind === 'battleCleanup'
+      ? entries.every(entry => entry.publicFace)
+      : entries.length === 1 && entries[0].publicFace) &&
     (continuation.kind === 'battleCleanup' ||
       (!continuation.resume.response && !continuation.resume.decision &&
         !continuation.resume.pendingKarama && !continuation.resume.phaseOpening)) &&

game/reference.ts

@@ -1156,7 +1156,7 @@ export const RULE_TOPICS: RuleTopic[] = [
                       : definition.card.effect === 'portableSnooper'
                         ? 'Choose Portable Snooper as your ordinary poison defense, or use the late-defense panel after reveal before your own traitor decision. It uses ordinary winner retention and cannot stop Poison Tooth.'
                         : definition.card.effect === 'semutaDrug'
-                          ? 'In an explicitly opted-in Richese development game, every seat sees a neutral response after a clean public ordinary-card discard, paid Box search, retired Ornithopter, private Distrans transfer, final definite Truthtrance answer, movement-order Sapho discard or one winner-selected battle card with no pending battle rewards. Continue or commit held Semuta with a free hand slot; only the freshly discarded public card transfers. The original flight arrival, private gift, answered history, reordered movement or resolved battle resumes once. BG/Ecaz/Moritani arrival reactions, multi-card battle batches, other competing transactions, full-hand sequencing and normal Richese starts remain unfinished.'
+                          ? 'In an explicitly opted-in Richese development game, every seat sees a neutral response after a clean public ordinary-card discard, paid Box search, retired Ornithopter, private Distrans transfer, final definite Truthtrance answer, movement-order Sapho discard or winner-selected battle-card batch with no pending rewards. Continue or commit held Semuta with a free hand slot. One fresh card transfers automatically; for several winner-discarded cards, commit first, then privately choose exactly one. The original flight arrival, private gift, answered history, reordered movement or resolved battle resumes once. BG/Ecaz/Moritani arrivals, other multi-card sources, competing transactions, full-hand sequencing and normal Richese starts remain unfinished.'
                         : 'Reference component only: this Richese card’s game actions are not enabled.',
       ],
       ...(definition.card.effect === 'semutaDrug'
@@ -1166,13 +1166,13 @@ export const RULE_TOPICS: RuleTopic[] = [
                 area: 'Implementation' as const,
                 status: 'Partial' as const,
                 detail:
-                  'An explicitly opted-in Richese profile interrupts clean public ordinary-card, paid Box, retired Ornithopter, private Distrans, final definite Truthtrance, movement-order Sapho and one winner-selected battle card with a neutral all-seat offer. Committing held Semuta claims only the other-player discarded card and disposes Semuta. The original movement, private gift, answer history or resolved battle resumes once. Mixed arrival reactions, multiple battle cards, pending battle rewards, other typed producers and full-hand exchange remain unfinished.',
+                  'An explicitly opted-in Richese profile interrupts clean public ordinary-card, paid Box, retired Ornithopter, private Distrans, final definite Truthtrance, movement-order Sapho and winner-selected battle-card discards with a neutral all-seat offer. A committed sole eligible card transfers immediately; several public winner cards open only the holder’s one-card selection. Semuta is discarded once and the original effect resumes once. Mixed arrivals, other multi-card sources, pending battle rewards, other typed producers and full-hand exchange remain unfinished.',
               },
               {
                 area: 'Player controls' as const,
                 status: 'Partial' as const,
                 detail:
-                  'All seats can Continue at the neutral fresh-discard boundary; only the actual holder sees Commit. A committed multi-card selection control is available when that later producer family is integrated. Normal Richese starts remain gated.',
+                  'All seats can Continue at the neutral fresh-discard boundary; only the actual holder sees Commit. A committed winner-battle batch gives that holder the card inspector and exact one-card selector; nonholders receive no candidates. Normal Richese starts remain gated.',
               },
               {
                 area: 'AI' as const,
@@ -1184,13 +1184,13 @@ export const RULE_TOPICS: RuleTopic[] = [
                 area: 'Documentation' as const,
                 status: 'Partial' as const,
                 detail:
-                  'The guide distinguishes bounded public ordinary-card, paid Box, both clean Ornithopter retirement paths, Distrans, final definite Truthtrance, movement-order Sapho and one clean winner battle-card preview from privacy-neutral acknowledgements, provisional free-slot policy and remaining discard sources.',
+                  'The guide distinguishes bounded public ordinary-card, paid Box, clean Ornithopter, Distrans, final definite Truthtrance, movement-order Sapho and winner-selected multi-card previews, privacy-neutral acknowledgements and conservative free-slot policy from unresolved full-hand sequencing and other discard sources.',
               },
               {
                 area: 'Verification' as const,
                 status: 'Partial' as const,
                 detail:
-                  'Genuine setup, physical custody, neutral hidden-hand parity, JSON, authenticated SQLite CAS and legal AI participation cover clean ordinary-card, paid Box, retired Ornithopter, private Distrans, final definite Truthtrance, movement-order Sapho and one winner-selected battle-card reactions. Other battle batches, full games and live deployment remain unverified.',
+                  'Genuine setup, exact physical custody, neutral hidden-hand parity, JSON, authenticated SQLite CAS and legal AI participation cover clean ordinary-card, paid Box, Ornithopter, Distrans, final definite Truthtrance, movement-order Sapho and winner-selected single/multi-card reactions. Other battle batches, full games and live deployment remain unverified.',
                 evidence: [
                   'tests/semuta-engine.test.ts',
                   'tests/semuta-recovery.test.ts',

tests/semuta-engine.test.ts

@@ -495,15 +495,16 @@ void test('a completed clean Ornithopter flight offers the retired card before i
   assert.throws(() => applyAction(claimed, 'r', { type: 'semutaCommit', event }));
 });
 
-void test('a clean winner-selected battle card can be claimed after the resolved battle', () => {
+void test('clean winner-selected battle cards allow one committed Semuta choice after resolution', () => {
   const { g, semuta, hajr } = fixture();
   player(g, 'a').hand = [];
   g.deck.push(hajr);
   const weaponIndex = g.deck.findIndex(card => card.kind === 'projectile');
   const [weapon] = g.deck.splice(weaponIndex, 1);
+  const [shield] = g.deck.splice(g.deck.findIndex(card => card.kind === 'shield'), 1);
   const [defense] = g.deck.splice(g.deck.findIndex(card => card.kind === 'snooper'), 1);
-  assert.ok(weapon && defense);
-  player(g, 'a').hand.push(weapon);
+  assert.ok(weapon && shield && defense);
+  player(g, 'a').hand.push(weapon, shield);
   player(g, 'e').hand.push(defense);
   for (const id of ['a', 'e']) {
     player(g, id).forces = { 'arrakeen:10': 5 };
@@ -528,13 +529,13 @@ void test('a clean winner-selected battle card can be claimed after the resolved
         type: 'battlePreparationReady', event: battle.battle!.preLeader!.event,
       });
   battle = applyAction(battle, 'a', { type: 'battlePlan', dial: 2, support: 2,
-    leader: player(battle, 'a').leaders[0].id, weapon: weapon.id });
+    leader: player(battle, 'a').leaders[0].id, weapon: weapon.id, defense: shield.id });
   battle = applyAction(battle, 'e', { type: 'battlePlan', dial: 0, support: 0,
     leader: player(battle, 'e').leaders[0].id, defense: defense.id });
   battle = applyAction(battle, 'a', { type: 'traitorCall', call: false });
   battle = applyAction(battle, 'e', { type: 'traitorCall', call: false });
   assert.equal(battle.decision?.kind, 'battleCards');
-  const pending = applyAction(battle, 'a', { type: 'decision', discard: [weapon.id] });
+  const pending = applyAction(reload(battle), 'a', { type: 'decision', discard: [weapon.id] });
   assert.equal(pending.pendingTreacheryDiscard?.batch.cause, 'battle:winner');
   assert.equal(pending.pendingTreacheryDiscard?.reaction?.stage, 'offer');
   assert.equal(pending.discard.filter(card => card.id === weapon.id).length, 1);
@@ -562,4 +563,40 @@ void test('a clean winner-selected battle card can be claimed after the resolved
   for (const p of claimed.players)
     assert.deepEqual(viewGame(reload(claimed), p.id), viewGame(claimed, p.id));
   assert.throws(() => applyAction(claimed, 'r', { type: 'semutaCommit', event }));
+  const multiple = applyAction(reload(battle), 'a', {
+    type: 'decision', discard: [weapon.id, shield.id],
+  });
+  assert.equal(multiple.pendingTreacheryDiscard?.batch.entries.length, 2);
+  assert.equal(multiple.pendingTreacheryDiscard?.reaction?.stage, 'offer');
+  assert.deepEqual(viewGame(multiple, 'e').semutaReaction?.candidates, []);
+  const multiEvent = multiple.pendingTreacheryDiscard!.batch.event;
+  const committed = applyAction(reload(multiple), 'r', { type: 'semutaCommit', event: multiEvent });
+  assert.equal(committed.pendingTreacheryDiscard?.reaction?.stage, 'select');
+  assert.deepEqual(viewGame(committed, 'r').semutaReaction?.candidates.map(card => card.id),
+    [weapon.id, shield.id]);
+  assert.deepEqual(viewGame(committed, 'a').semutaReaction?.candidates, []);
+  assert.equal(player(committed, 'r').hand.some(card => card.id === semuta.id), true);
+  assert.equal(committed.discard.filter(card => card.id === weapon.id || card.id === shield.id).length, 2);
+  const snapshot = JSON.stringify(committed);
+  assert.throws(() => applyAction(committed, 'e', {
+    type: 'semutaSelect', event: multiEvent, card: weapon.id,
+  }));
+  assert.equal(JSON.stringify(committed), snapshot);
+  assert.deepEqual(normalizeAutomaticGame(reload(committed)), reload(committed));
+  const selected = applyAction(reload(committed), 'r', botActions(viewGame(committed, 'r'))[0]!);
+  assert.equal(selected.pendingTreacheryDiscard, null);
+  assert.equal(player(selected, 'r').hand.filter(card => card.id === weapon.id).length, 1);
+  assert.equal(selected.discard.some(card => card.id === shield.id), true);
+  assert.equal(selected.discard.filter(card => card.id === semuta.id).length, 1);
+  assert.deepEqual(inventory(selected), original);
+  assert.deepEqual(settled(selected), settled(declined));
+  const alternate = applyAction(reload(committed), 'r', {
+    type: 'semutaSelect', event: multiEvent, card: shield.id,
+  });
+  assert.equal(alternate.pendingTreacheryDiscard, null);
+  assert.equal(player(alternate, 'r').hand.filter(card => card.id === shield.id).length, 1);
+  assert.equal(alternate.discard.filter(card => card.id === weapon.id).length, 1);
+  assert.equal(alternate.discard.filter(card => card.id === semuta.id).length, 1);
+  assert.deepEqual(inventory(alternate), original);
+  assert.deepEqual(settled(alternate), settled(declined));
 });

tests/semuta-recovery.test.ts

@@ -324,10 +324,12 @@ void test('authenticated clean Semuta producers claim once through restart and r
     seat(battleStart, ids[0]).hand.push(battleSemuta);
     const weapon = battleStart.deck.splice(
       battleStart.deck.findIndex(card => card.kind === 'projectile'), 1)[0];
+    const shield = battleStart.deck.splice(
+      battleStart.deck.findIndex(card => card.kind === 'shield'), 1)[0];
     const defense = battleStart.deck.splice(
       battleStart.deck.findIndex(card => card.kind === 'snooper'), 1)[0];
-    assert.ok(weapon && defense);
-    seat(battleStart, ids[1]).hand.push(weapon);
+    assert.ok(weapon && shield && defense);
+    seat(battleStart, ids[1]).hand.push(weapon, shield);
     seat(battleStart, ids[2]).hand.push(defense);
     for (const id of [ids[1], ids[2]]) {
       const p = seat(battleStart, id);
@@ -353,24 +355,36 @@ void test('authenticated clean Semuta producers claim once through restart and r
       for (const index of [1, 2])
         duel = await act(index, { type: 'battlePreparationReady', event: duel.battle!.preLeader!.event });
     duel = await act(1, { type: 'battlePlan', dial: 2, support: 2,
-      leader: seat(duel, ids[1]).leaders[0].id, weapon: weapon.id });
+      leader: seat(duel, ids[1]).leaders[0].id,
+      weapon: weapon.id, defense: shield.id });
     duel = await act(2, { type: 'battlePlan', dial: 0, support: 0,
       leader: seat(duel, ids[2]).leaders[0].id, defense: defense.id });
     duel = await act(1, { type: 'traitorCall', call: false });
     duel = await act(2, { type: 'traitorCall', call: false });
     assert.equal(duel.decision?.kind, 'battleCards');
-    const chosen = await act(1, { type: 'decision', discard: [weapon.id] });
+    const chosen = await act(1, { type: 'decision', discard: [weapon.id, shield.id] });
     assert.equal(chosen.pendingTreacheryDiscard?.batch.cause, 'battle:winner');
     assert.equal(chosen.pendingTreacheryDiscard?.reaction?.stage, 'offer');
     await f.restart().continueRoomAutomatic(code, clock);
     assert.equal((await f.restart().readRoom(code)).version, chosen.version);
     assert.equal((await f.restart().readSeatView(code, auths[0])).semutaReaction?.canCommit, true);
-    const battleClaim = await act(0, { type: 'semutaCommit',
+    const committed = await act(0, { type: 'semutaCommit',
       event: chosen.pendingTreacheryDiscard!.batch.event });
+    assert.equal(committed.pendingTreacheryDiscard?.reaction?.stage, 'select');
+    await f.restart().continueRoomAutomatic(code, clock);
+    assert.equal((await f.restart().readRoom(code)).version, committed.version);
+    const ownerSelection = await f.restart().readSeatView(code, auths[0]);
+    const rivalSelection = await f.restart().readSeatView(code, auths[2]);
+    assert.deepEqual(ownerSelection.semutaReaction?.candidates.map(card => card.id),
+      [weapon.id, shield.id]);
+    assert.deepEqual(rivalSelection.semutaReaction?.candidates, []);
+    const battleClaim = await act(0, { type: 'semutaSelect',
+      event: chosen.pendingTreacheryDiscard!.batch.event, card: shield.id });
     assert.equal(battleClaim.pendingTreacheryDiscard, null);
-    assert.equal(seat(battleClaim, ids[0]).hand.filter(card => card.id === weapon.id).length, 1);
+    assert.equal(seat(battleClaim, ids[0]).hand.filter(card => card.id === shield.id).length, 1);
     assert.equal(battleClaim.discard.filter(card => card.id === SEMUTA_DRUG_ID).length, 1);
-    assert.equal(battleClaim.discard.some(card => card.id === weapon.id), false);
+    assert.equal(battleClaim.discard.filter(card => card.id === weapon.id).length, 1);
+    assert.equal(battleClaim.discard.some(card => card.id === shield.id), false);
     assert.deepEqual(f.sqlite.prepare('SELECT * FROM seats').all(), originalSeats);
     for (const auth of auths)
       assert.deepEqual(await f.restart().readSeatView(code, auth), viewGame(battleClaim, auth.playerId));