{"format":"murdoku-puzzle/1","id":"museum-night","version":1,"difficulty":"hard","level":6,"size":{"rows":10,"cols":10},"languages":["en","hu","de","fr","es","it","nl","pl","pt","ro","ca","cs","fi","vi","tr","el","ru","uk","ar","ko","ja","zh-Hans","zh-Hant"],"defaultLanguage":"en","title":"Night at the Museum","tagline":"Marlow Museum · late opening · the lights go out at ten","author":"mathace","concept":"Murdoku – Manuel Garand (murdoku.com); unofficial fan-made case","created":"2026-09-16","story":"Late opening at the Marlow Museum. At ten the lights go out for the evening’s “night walk” – and when they come back, Verity, the head curator, lies dead in the Egyptian Gallery, next to the sarcophagus. Nine people were in the building: two night guards, two curators and five visitors. One of them is the killer. Read every statement, find everyone’s square on the floor plan and unmask the murderer – alone with Verity in the Egyptian Gallery.","rules":{"standard":["Every <b>row</b> and every <b>column</b> holds exactly <b>one person</b>. As soon as you place someone, cross out their whole row and column.","<b>“Beside”</b> = directly left, right, above or below, and <b>in the same area</b>. Squares with objects (statues, the sarcophagus, the skeleton, paintings, crates, counters…) cannot be occupied; the benches and the chairs can. A <b>corner</b> of an area is a square of that area with two outer sides.","Directions refer to rows and columns, not to the same line: <i>“exactly one row north of him was a woman”</i> = the person in the row directly above is a woman, in any column; <i>“north of Bea”</i> = in a row further up, in any column.","The murderer was <b>alone with the victim</b>: nobody else was in that area."],"special":["<b>The alarm log:</b> after the crime the murderer walked from the Egyptian Gallery to one of the two exits – the <b>main entrance</b> in the Lobby or the <b>terrace door</b> of the Café – <b>without meeting anyone</b>: every area they walked through was <b>empty</b>. Areas connect only where a <b>door</b> is drawn. The Egyptian Gallery itself is where the murderer started – it does not have to be empty."]},"roleNames":{"guard":"guard","curator":"curator","visitor":"visitor","victim":"victim"},"personGroups":[{"id":"guards","name":"Night guards","persons":["A","B"]},{"id":"curators","name":"Curators","persons":["C","D","V"]},{"id":"visitors","name":"Visitors","persons":["E","F","G","H","I"]}],"map":{"groups":[],"gaps":[],"areas":[{"id":"Lobby","cells":[[1,1],[1,2],[1,3],[2,1],[2,2],[2,3],[3,1],[3,2],[3,3]],"fill":"#e9e1d2","pattern":"marble","labelAt":[2,2],"name":"Lobby"},{"id":"Egyptian","cells":[[1,4],[1,5],[1,6],[1,7],[2,4],[2,5],[2,6],[2,7],[3,4],[3,5],[3,6],[3,7]],"fill":"#f0dcb0","pattern":"tiles","labelAt":[3,5.5],"name":"Egyptian Gallery"},{"id":"Dinosaur","cells":[[1,8],[1,9],[1,10],[2,8],[2,9],[2,10],[3,8],[3,9],[3,10],[4,8],[4,9],[4,10]],"fill":"#dfe3e8","pattern":"tiles","labelAt":[4,9],"name":"Dinosaur 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was <b>south of Edwin</b>. 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stroke=\"#2b2b2b\" stroke-width=\"1.4\"/></svg>","solverRole":"staff","constraints":[{"type":"rel_any","dir":"N","exact":1,"gender":"F","role":"guest"},{"type":"area","areas":["Armoury"]}]},{"id":"E","name":"Edwin","gender":"M","role":"visitor","color":"#e65100","avatar":{"bg":"#3d5a6e","skin":"#f0cdb0","hair":"#b7482c","style":"short","shirt":"#e67e22","headphones":true},"clue":"He was beside a <b>bench</b>.","job":"student","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Edwin\"><rect width=\"80\" height=\"80\" fill=\"#3d5a6e\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#e67e22\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#f0cdb0\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#f0cdb0\"/><path d=\"M26 32 Q26 15 40 15 Q54 15 54 32 Q50 24 40 24 Q30 24 26 32 Z\" fill=\"#b7482c\"/><circle cx=\"34\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><circle cx=\"46\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><path d=\"M36 43 Q40 46 44 43\" fill=\"none\" stroke=\"#a5735a\" stroke-width=\"1.4\"/><path d=\"M25 34 Q25 12 40 12 Q55 12 55 34\" fill=\"none\" stroke=\"#111\" stroke-width=\"3\"/><rect x=\"21\" y=\"30\" width=\"7\" height=\"12\" rx=\"3\" fill=\"#111\"/><rect x=\"52\" y=\"30\" width=\"7\" height=\"12\" rx=\"3\" fill=\"#111\"/></svg>","solverRole":"guest","constraints":[{"type":"beside","obj":"bench"}]},{"id":"F","name":"Fenella","gender":"F","role":"visitor","color":"#00838f","avatar":{"bg":"#7a6a3c","skin":"#e9c6a4","hair":"#c9c3b8","style":"bob","shirt":"#8e44ad","glasses":true,"necklace":true},"clue":"There was <b>exactly one other person</b> in her area. <b>Exactly one row north</b> of her was a <b>female visitor</b>.","job":"retired teacher","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Fenella\"><rect width=\"80\" height=\"80\" fill=\"#7a6a3c\"/><path d=\"M22 40 Q22 14 40 14 Q58 14 58 40 L58 58 L22 58 Z\" fill=\"#c9c3b8\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#8e44ad\"/><path d=\"M31 58 Q40 66 49 58\" fill=\"none\" stroke=\"#f3e2b3\" stroke-width=\"2\" stroke-dasharray=\"2 2\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#e9c6a4\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#e9c6a4\"/><path d=\"M26 36 Q26 16 40 16 Q54 16 54 36 Q52 24 40 24 Q28 24 26 36 Z\" fill=\"#c9c3b8\"/><circle cx=\"34\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><circle cx=\"46\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><path d=\"M36 43 Q40 46 44 43\" fill=\"none\" stroke=\"#a5735a\" stroke-width=\"1.4\"/><circle cx=\"34\" cy=\"35\" r=\"5\" fill=\"none\" stroke=\"#2b2b2b\" stroke-width=\"1.4\"/><circle cx=\"46\" cy=\"35\" r=\"5\" fill=\"none\" stroke=\"#2b2b2b\" stroke-width=\"1.4\"/><line x1=\"39\" y1=\"35\" x2=\"41\" y2=\"35\" stroke=\"#2b2b2b\" stroke-width=\"1.4\"/></svg>","solverRole":"guest","constraints":[{"type":"with_count","n":1},{"type":"rel_any","dir":"N","exact":1,"gender":"F","role":"guest"}]},{"id":"G","name":"Gaston","gender":"M","role":"visitor","color":"#ad1457","avatar":{"bg":"#35607a","skin":"#e4b998","hair":"#1c1a1a","style":"slick","shirt":"#2f3b4c","beard":true},"clue":"He was beside a <b>statue</b>. <b>Exactly one row south</b> of him was a <b>woman</b>.","job":"art dealer","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Gaston\"><rect width=\"80\" height=\"80\" fill=\"#35607a\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#2f3b4c\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#e4b998\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#e4b998\"/><path d=\"M26 30 Q27 16 44 15 Q56 15 55 26 Q48 22 40 23 Q30 24 26 30 Z\" fill=\"#1c1a1a\"/><circle cx=\"34\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><circle cx=\"46\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><path d=\"M36 43 Q40 46 44 43\" fill=\"none\" stroke=\"#a5735a\" stroke-width=\"1.4\"/><path d=\"M27 38 Q30 52 40 53 Q50 52 53 38 Q50 47 40 48 Q30 47 27 38 Z\" fill=\"#1c1a1a\"/></svg>","solverRole":"guest","constraints":[{"type":"beside","obj":"statue"},{"type":"rel_any","dir":"S","exact":1,"gender":"F"}]},{"id":"H","name":"Hilary","gender":"F","role":"visitor","color":"#5d4037","avatar":{"bg":"#8c3a5a","skin":"#f6d8c0","hair":"#d9b464","style":"long","shirt":"#c0392b","earrings":true},"clue":"She was <b>not</b> beside a <b>bench</b>. <b>Exactly two rows north</b> of her was a <b>man</b>.","job":"journalist","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Hilary\"><rect width=\"80\" height=\"80\" fill=\"#8c3a5a\"/><path d=\"M22 42 Q20 14 40 14 Q60 14 58 42 L62 72 L18 72 Z\" fill=\"#d9b464\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#c0392b\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#f6d8c0\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#f6d8c0\"/><path d=\"M26 36 Q26 16 40 16 Q54 16 54 36 Q52 24 40 24 Q28 24 26 36 Z\" fill=\"#d9b464\"/><circle cx=\"34\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><circle cx=\"46\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><path d=\"M36 43 Q40 46 44 43\" fill=\"none\" stroke=\"#a5735a\" stroke-width=\"1.4\"/><circle cx=\"26\" cy=\"41\" r=\"1.8\" fill=\"#f0c95a\"/><circle cx=\"54\" cy=\"41\" r=\"1.8\" fill=\"#f0c95a\"/></svg>","solverRole":"guest","constraints":[{"type":"not_beside","obj":"bench"},{"type":"rel_any","dir":"N","exact":2,"gender":"M"}]},{"id":"I","name":"Isidore","gender":"M","role":"visitor","color":"#827717","avatar":{"bg":"#4e6f8a","skin":"#d9a57a","hair":"#5a3a22","style":"bald","shirt":"#3f8a4a","tophat":"#000000"},"clue":"He was beside a <b>counter</b>. He was <b>north of Edwin</b>.","job":"collector","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Isidore\"><rect width=\"80\" height=\"80\" fill=\"#4e6f8a\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#3f8a4a\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#d9a57a\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#d9a57a\"/><path d=\"M26 30 Q26 22 30 20 L30 34 Q26 34 26 30 Z\" fill=\"#5a3a22\"/><path d=\"M54 30 Q54 22 50 20 L50 34 Q54 34 54 30 Z\" fill=\"#5a3a22\"/><circle cx=\"34\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><circle cx=\"46\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><path d=\"M36 43 Q40 46 44 43\" fill=\"none\" stroke=\"#a5735a\" stroke-width=\"1.4\"/><rect x=\"26\" y=\"0\" width=\"28\" height=\"26\" rx=\"2\" fill=\"#000000\"/><rect x=\"19\" y=\"24\" width=\"42\" height=\"6\" rx=\"3\" fill=\"#000000\" stroke=\"rgba(0,0,0,.25)\"/><rect x=\"26\" y=\"19\" width=\"28\" height=\"5\" fill=\"#c9a03a\"/></svg>","solverRole":"guest","constraints":[{"type":"beside","obj":"counter"},{"type":"rel","q":"E","dir":"N"}]},{"id":"V","name":"Verity","gender":"F","role":"victim","color":"#1b1b1b","avatar":{"bg":"#5a2a2a","skin":"#f0cdb0","hair":"#2a1d16","style":"bun","shirt":"#264653","necklace":true},"clue":"<b>The victim.</b> She was found in the <b>Egyptian Gallery</b>, next to the sarcophagus – alone with the murderer.","job":"head curator","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Verity\"><rect width=\"80\" height=\"80\" fill=\"#5a2a2a\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#264653\"/><path d=\"M31 58 Q40 66 49 58\" fill=\"none\" stroke=\"#f3e2b3\" stroke-width=\"2\" stroke-dasharray=\"2 2\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#f0cdb0\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#f0cdb0\"/><circle cx=\"40\" cy=\"15\" r=\"7\" fill=\"#2a1d16\"/><path d=\"M26 32 Q26 16 40 16 Q54 16 54 32 Q50 24 40 24 Q30 24 26 32 Z\" fill=\"#2a1d16\"/><circle cx=\"34\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><circle cx=\"46\" cy=\"35\" r=\"1.6\" fill=\"#2b2b2b\"/><path d=\"M36 43 Q40 46 44 43\" fill=\"none\" stroke=\"#a5735a\" stroke-width=\"1.4\"/><path d=\"M12 12 L68 68 M68 12 L12 68\" stroke=\"#e0362e\" stroke-width=\"5\" stroke-linecap=\"round\" opacity=\".9\"/></svg>","solverRole":"staff","constraints":[{"type":"area","areas":["Egyptian"]}]}],"victim":"V","murderer":"G","solution":{"G":[1,5],"V":[2,4],"H":[3,8],"F":[4,2],"D":[5,7],"C":[6,3],"B":[7,9],"I":[8,1],"E":[9,6],"A":[10,10]},"walkthrough":[{"place":[],"cand":{"I":[[7,2],[8,1],[8,9]],"E":[[8,6],[9,6]],"A":[[9,1],[9,2],[9,3],[9,4],[9,8],[9,10],[10,1],[10,3],[10,4],[10,8],[10,9],[10,10]]},"text":"The alarm log first. Delphi was in the Armoury and Bea in the Storeroom – and every way from the Egyptian Gallery to the terrace door of the Café passes through one of those two rooms (Egyptian Gallery → Armoury → …, or Egyptian Gallery → Dinosaur Hall → Storeroom → …). So the murderer left through the main entrance: <b>the Lobby was empty</b> – cross out R1C2, R2C1, R2C2, R2C3, R3C1 and R3C3. Isidore was beside a counter, and the Lobby counter is out, so he is by the Gift Shop counter (R7C2, R8C1) or the Café counter (R8C9, R9C10). Edwin was beside a bench, south of Isidore and north of Aldo: R8C6 or R9C6, by the Sculpture Court benches – <b>column 6 is Edwin’s</b>, and Isidore, north of him, is at R7C2, R8C1 or R8C9. Aldo, south of Edwin and alone in his gallery, is in row 9 or 10 – in the Gift Shop or the Café, not in the Sculpture Court with Edwin."},{"place":[],"cand":{"D":[[5,5],[5,7],[6,5]],"B":[[5,9],[5,10],[6,8],[6,10],[7,8],[7,9]],"G":[[1,5],[2,4],[2,7],[7,5],[7,7],[8,5]],"V":[[1,5],[2,4],[2,7],[3,4],[3,5]],"C":[[3,10],[4,3],[4,9],[5,2],[5,4],[6,3],[7,5],[10,5],[10,7]]},"text":"The two female visitors, Fenella and Hilary: exactly one row north of Fenella was a female visitor – that can only be Hilary, so Fenella is in the row directly below Hilary. Delphi also had a female visitor directly north of her; the row below Hilary is Fenella’s, so it is Fenella – Hilary, Fenella and Delphi occupy three consecutive rows. Hilary needs a man two rows north of her, so she is in row 3 at the earliest, and Delphi – in the Armoury – in row 5 or 6: <b>R5C5, R5C7 or R6C5</b> (R4C7 is too high; R4C6, R5C6 and R6C6 are in Edwin’s column, R4C5 and R6C7 the suits of armour). Pencil in the rest: Bea somewhere in the Storeroom; Gaston beside a statue with a woman one row south of him – R1C5, R2C4, R2C7, R7C5, R7C7 or R8C5; Verity in the Egyptian Gallery (R1C5, R2C4, R2C7, R3C4, R3C5); Cosmo beside a bench (R3C10, R4C3, R4C9, R5C2, R5C4, R6C3, R7C5, R10C5, R10C7)."},{"place":["D"],"cand":{"H":[[3,4],[3,5],[3,8]],"F":[[4,2],[4,3],[4,4],[4,8],[4,9],[4,10]],"G":[[1,5],[2,4],[7,5],[8,5]]},"text":"<b>Could Delphi be at R5C5?</b> Then Hilary is in row 3 and Fenella in row 4, and column 5 is Delphi’s – so who is in row 1? The Lobby is empty, R1C5 is in Delphi’s column, R1C6 in Edwin’s, R1C4 and R1C7 are the statue and the obelisk, and nobody can take the Dinosaur Hall’s R1C8–R1C10: Cosmo has no bench there, Gaston no statue, everyone else is tied elsewhere. Contradiction. <b>Could Delphi be at R6C5?</b> Then Hilary is in row 4 and Fenella in row 5, and the man two rows north of Hilary is in row 2: with the Lobby empty, only Gaston can be there (R2C4 or R2C7) – in the Egyptian Gallery, so he would be the murderer, with the woman one row south of him, Verity, at R3C4. Rows 2–6 would be Gaston, Verity, Hilary, Fenella and Delphi; Bea takes row 7 in the Storeroom, Isidore row 8, Edwin row 9, Aldo row 10 – and row 1 is left to Cosmo, who has no bench there. Contradiction. <b>Delphi is at R5C7</b>: cross out row 5 and column 7. Hilary is in row 3 and Fenella in row 4."},{"place":["H","G","V"],"cand":{"F":[[4,2],[4,3],[4,9],[4,10]],"C":[[6,3]],"B":[[6,10],[7,9]],"I":[[7,2],[8,1],[8,9]],"E":[[8,6],[9,6]]},"text":"Gaston needs a woman exactly one row south of him. From the Sculpture Court (R7C5, R8C5) that woman would be in row 8 or 9 – but Bea is in row 6 or 7 of the Storeroom (row 5 is Delphi’s) and the other women are in rows 2–5. So <b>Gaston is at R1C5 or R2C4, in the Egyptian Gallery – Gaston is the murderer</b>, alone with Verity. Hilary, in row 3, cannot join them there (R3C4, R3C5), and R3C10 is beside the Dinosaur Hall bench: <b>Hilary is at R3C8</b>. The man two rows north of her is in row 1 – that is Gaston: <b>Gaston at R1C5</b>, and the woman one row south of him is <b>Verity at R2C4</b> (R2C7 is in Delphi’s column). Cross out rows 1–3 and columns 4, 5, 7 and 8."},{"place":["C","B","E"],"cand":{"I":[[8,1]],"A":[[10,1],[10,10]],"F":[[4,2],[4,10]]},"text":"Rows 6–10 must hold Aldo, Bea, Cosmo, Edwin and Isidore, and row 10 can only be Aldo’s (Cosmo’s squares there, R10C5 and R10C7, lie in Gaston’s and Delphi’s columns). Cosmo’s bench squares in row 4 are in Fenella’s row, so <b>Cosmo is at R6C3</b>, beside the Picture Gallery bench; Bea then takes row 7 (<b>R7C9</b> – R7C8 is in Hilary’s column), Isidore row 8, and Edwin, with Isidore north of him, <b>R9C6</b>. Cross out rows 6, 7 and 9 and columns 3, 6 and 9."},{"place":["I","A","F"],"text":"Isidore’s R8C9 is in Bea’s column, so <b>Isidore is at R8C1</b>, in the Gift Shop. Aldo was alone in his gallery, so he cannot join him there: <b>Aldo is at R10C10</b>, in the Café. Column 10 is then his, so <b>Fenella is at R4C2</b> – in the Picture Gallery with exactly one other person, Cosmo, just as she said."},{"final":true,"text":"Case closed: Verity was alone with Gaston in the Egyptian Gallery, and he slipped out through the empty Lobby. <b>Gaston, the art dealer, is the murderer!</b>"}],"solver":{"rules":[{"type":"escape","links":[["Lobby","Egyptian"],["Lobby","Paintings"],["Egyptian","Dinosaur"],["Egyptian","Armoury"],["Dinosaur","Storage"],["Paintings","Armoury"],["Paintings","Gift Shop"],["Armoury","Sculpture"],["Armoury","Storage"],["Storage","Cafe"],["Storage","Sculpture"],["Sculpture","Cafe"],["Sculpture","Gift Shop"]],"exits":["Lobby","Cafe"]}],"occupiable":["bench","chair"]},"verification":{"tool":"tools/murdoku_solver.py","unique":true,"guessFree":true,"checked":"2026-09-16"}}