{"format":"murdoku-puzzle/1","id":"observatory","version":1,"difficulty":"hard","level":8,"size":{"rows":12,"cols":12},"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":"The Observatory","tagline":"Mount Aster Observatory · night of the meteor shower · one shooting star too many","author":"mathace","concept":"Murdoku – Manuel Garand (murdoku.com); unofficial fan-made case","created":"2026-09-17","story":"The night of the great meteor shower at the Mount Aster Observatory. The dome is open, the visitors have been shown the sky, the students are developing the plates – and at midnight Vesna, the director, is found dead in the Dome, beside the great telescope. Eleven people were in the building: four astronomers, three students and four visitors. One of them is the killer – and slipped away afterwards through rooms where nobody was. Read every statement, find everyone’s square on the plan and unmask the murderer – alone with Vesna in the Dome.","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 (the telescopes, consoles, desks, bookcases, tables, the stove…) cannot be occupied; the chairs, the benches, the armchair and the sofa 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 Barbara”</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 escape:</b> after the crime the murderer walked from the Dome to one of the two exits – the <b>loading door</b> of the Workshop or the <b>garden stairs</b> of the Terrace – <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 Dome itself is where the murderer started – it does not have to be empty."]},"roleNames":{"astronomer":"astronomer","student":"student","visitor":"visitor","victim":"victim"},"personGroups":[{"id":"astronomers","name":"Astronomers","persons":["A","B","C","D","V"]},{"id":"students","name":"Students","persons":["E","F","G"]},{"id":"visitors","name":"Visitors","persons":["H","I","J","K"]}],"map":{"groups":[],"gaps":[],"areas":[{"id":"Dome","cells":[[1,1],[1,2],[1,3],[1,4],[1,5],[1,6],[2,1],[2,2],[2,3],[2,4],[2,5],[2,6],[3,1],[3,2],[3,3],[3,4],[3,5],[3,6],[4,1],[4,2],[4,3],[4,4],[4,5],[4,6]],"fill":"#d5d9e0","pattern":"tiles","labelAt":[1,3.5],"name":"Dome"},{"id":"Control Room","cells":[[1,7],[1,8],[1,9],[2,7],[2,8],[2,9],[3,7],[3,8],[3,9],[4,7],[4,8],[4,9]],"fill":"#dcdcdc","pattern":"tiles","labelAt":[1,8],"name":"Control Room"},{"id":"Dark 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He was the <b>southernmost person in his area</b>.","job":"solar astronomer","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Anselm\"><rect width=\"80\" height=\"80\" fill=\"#2f4858\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#264653\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#f1c8a5\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#f1c8a5\"/><path d=\"M26 32 Q26 15 40 15 Q54 15 54 32 Q50 24 40 24 Q30 24 26 32 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":"astronomer","constraints":[{"type":"beside","obj":"table"},{"type":"extreme_in_area","dir":"S"}]},{"id":"B","name":"Barbara","gender":"F","role":"astronomer","color":"#2e7d32","avatar":{"bg":"#5b2c6f","skin":"#f6d8c0","hair":"#5a3a22","style":"bun","shirt":"#8e44ad","glasses":true},"clue":"She was beside a <b>table</b>.","job":"comet hunter","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Barbara\"><rect width=\"80\" height=\"80\" fill=\"#5b2c6f\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#8e44ad\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#f6d8c0\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#f6d8c0\"/><circle cx=\"40\" cy=\"15\" r=\"7\" fill=\"#5a3a22\"/><path d=\"M26 32 Q26 16 40 16 Q54 16 54 32 Q50 24 40 24 Q30 24 26 32 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\"/><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":"astronomer","constraints":[{"type":"beside","obj":"table"}]},{"id":"C","name":"Caspian","gender":"M","role":"astronomer","color":"#1565c0","avatar":{"bg":"#1b2a33","skin":"#e7b98f","hair":"#1c1a1a","style":"curly","shirt":"#3f6a8a","beard":true},"clue":"He was beside a <b>sink</b>. There was <b>a student</b> in his area.","job":"night assistant","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Caspian\"><rect width=\"80\" height=\"80\" fill=\"#1b2a33\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#3f6a8a\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#e7b98f\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#e7b98f\"/><path d=\"M25 34 q-3 -8 4 -10 q0 -8 8 -7 q3 -4 8 -1 q6 -3 9 3 q7 0 5 8 q4 4 -1 9 q-6 -14 -16 -12 q-9 -1 -17 10 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":"astronomer","constraints":[{"type":"beside","obj":"sink"},{"type":"with_role","role":"student"}]},{"id":"D","name":"Daniela","gender":"F","role":"astronomer","color":"#6a1b9a","avatar":{"bg":"#6e2c4b","skin":"#f0cdb0","hair":"#2b1c14","style":"bob","shirt":"#1b1b1b","earrings":true},"clue":"She was beside a <b>chair</b>. There was <b>exactly one other person</b> in her area.","job":"deputy director","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Daniela\"><rect width=\"80\" height=\"80\" fill=\"#6e2c4b\"/><path d=\"M22 40 Q22 14 40 14 Q58 14 58 40 L58 58 L22 58 Z\" fill=\"#2b1c14\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#1b1b1b\"/><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 36 Q26 16 40 16 Q54 16 54 36 Q52 24 40 24 Q28 24 26 36 Z\" fill=\"#2b1c14\"/><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":"astronomer","constraints":[{"type":"beside","obj":"chair"},{"type":"with_count","n":1}]},{"id":"E","name":"Elias","gender":"M","role":"student","color":"#e65100","avatar":{"bg":"#3d5a6e","skin":"#d9a57a","hair":"#5a3a22","style":"short","shirt":"#c0392b"},"clue":"He was in a <b>corner of his area</b>.","job":"doctoral student","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Elias\"><rect width=\"80\" height=\"80\" fill=\"#3d5a6e\"/><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=\"#d9a57a\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#d9a57a\"/><path d=\"M26 32 Q26 15 40 15 Q54 15 54 32 Q50 24 40 24 Q30 24 26 32 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\"/></svg>","solverRole":"student","constraints":[{"type":"corner_of_area"}]},{"id":"F","name":"Franka","gender":"F","role":"student","color":"#00838f","avatar":{"bg":"#7a6a3c","skin":"#f6d8c0","hair":"#d9b464","style":"ponytail","shirt":"#2f3b4c","headband":"#f0b429"},"clue":"She was beside a <b>bookcase</b>. There was <b>a visitor</b> in her area.","job":"student","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Franka\"><rect width=\"80\" height=\"80\" fill=\"#7a6a3c\"/><path d=\"M50 30 Q64 34 60 62 L54 62 Q56 40 48 36 Z\" fill=\"#d9b464\"/><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=\"#f6d8c0\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#f6d8c0\"/><path d=\"M26 33 Q26 16 40 16 Q54 16 54 33 Q50 24 40 24 Q30 24 26 33 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\"/><rect x=\"26\" y=\"23\" width=\"28\" height=\"5\" rx=\"2\" fill=\"#f0b429\"/></svg>","solverRole":"student","constraints":[{"type":"beside","obj":"bookcase"},{"type":"with_role","role":"visitor"}]},{"id":"G","name":"Gregor","gender":"M","role":"student","color":"#ad1457","avatar":{"bg":"#35607a","skin":"#e9c6a4","hair":"#b7482c","style":"curly","shirt":"#8a949c"},"clue":"There was a <b>woman</b> in his area. He was <b>north of Vesna</b>.","job":"student","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Gregor\"><rect width=\"80\" height=\"80\" fill=\"#35607a\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#8a949c\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#e9c6a4\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#e9c6a4\"/><path d=\"M25 34 q-3 -8 4 -10 q0 -8 8 -7 q3 -4 8 -1 q6 -3 9 3 q7 0 5 8 q4 4 -1 9 q-6 -14 -16 -12 q-9 -1 -17 10 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\"/></svg>","solverRole":"student","constraints":[{"type":"with_gender","gender":"F"},{"type":"rel","q":"V","dir":"N"}]},{"id":"H","name":"Helena","gender":"F","role":"visitor","color":"#5d4037","avatar":{"bg":"#8c3a5a","skin":"#f0cdb0","hair":"#c9c3b8","style":"long","shirt":"#7a5a9a","necklace":true},"clue":"She was <b>not</b> in a corner of her area.","job":"patron","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Helena\"><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=\"#c9c3b8\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#7a5a9a\"/><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\"/><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\"/></svg>","solverRole":"visitor","constraints":[{"type":"not_corner_of_area"}]},{"id":"I","name":"Ivo","gender":"M","role":"visitor","color":"#827717","avatar":{"bg":"#4e6f8a","skin":"#e4b998","hair":"#2b1c14","style":"bald","shirt":"#5d4037","mustache":true},"clue":"<b>Exactly one row north</b> of him was a <b>woman</b>. He was the <b>only one</b> beside a <b>bench</b>.","job":"amateur astronomer","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Ivo\"><rect width=\"80\" height=\"80\" fill=\"#4e6f8a\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#5d4037\"/><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 Q26 22 30 20 L30 34 Q26 34 26 30 Z\" fill=\"#2b1c14\"/><path d=\"M54 30 Q54 22 50 20 L50 34 Q54 34 54 30 Z\" fill=\"#2b1c14\"/><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=\"M33 41 Q40 37 47 41 Q40 43 33 41 Z\" fill=\"#3a2a1c\"/></svg>","solverRole":"visitor","constraints":[{"type":"rel_any","dir":"N","exact":1,"gender":"F"},{"type":"only_beside","obj":"bench"}]},{"id":"J","name":"Jemima","gender":"F","role":"visitor","color":"#283593","avatar":{"bg":"#2f3b4c","skin":"#f6d8c0","hair":"#1c1a1a","style":"bun","shirt":"#3f8a4a","scarf":"#e0b050"},"clue":"She was in the <b>Hall</b>. She was <b>alone in her area</b>.","job":"science journalist","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Jemima\"><rect width=\"80\" height=\"80\" fill=\"#2f3b4c\"/><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=\"#f6d8c0\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#f6d8c0\"/><circle cx=\"40\" cy=\"15\" r=\"7\" fill=\"#1c1a1a\"/><path d=\"M26 32 Q26 16 40 16 Q54 16 54 32 Q50 24 40 24 Q30 24 26 32 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=\"M30 58 Q40 70 50 58 L48 66 Q40 76 32 66 Z\" fill=\"#e0b050\"/></svg>","solverRole":"visitor","constraints":[{"type":"area","areas":["Hall"]},{"type":"alone"}]},{"id":"K","name":"Kieran","gender":"M","role":"visitor","color":"#33691e","avatar":{"bg":"#5a2a2a","skin":"#f1c8a5","hair":"#b7482c","style":"slick","shirt":"#1b1b1b","bow":true},"clue":"He was the <b>northernmost person in his area</b>.","job":"town councillor","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Kieran\"><rect width=\"80\" height=\"80\" fill=\"#5a2a2a\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#1b1b1b\"/><path d=\"M40 60 l-8 -4 v8 z M40 60 l8 -4 v8 z\" fill=\"#b8302b\"/><circle cx=\"40\" cy=\"60\" r=\"2\" fill=\"#7a1f1c\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#f1c8a5\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#f1c8a5\"/><path d=\"M26 30 Q27 16 44 15 Q56 15 55 26 Q48 22 40 23 Q30 24 26 30 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\"/></svg>","solverRole":"visitor","constraints":[{"type":"extreme_in_area","dir":"N"}]},{"id":"V","name":"Vesna","gender":"F","role":"victim","color":"#1b1b1b","avatar":{"bg":"#5a2a2a","skin":"#f0cdb0","hair":"#c9c3b8","style":"bun","shirt":"#1b1b1b","glasses":true},"clue":"<b>The victim.</b> She was found in the <b>Dome</b>, beside a <b>telescope</b> – alone with the murderer.","job":"the director","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Vesna\"><rect width=\"80\" height=\"80\" fill=\"#5a2a2a\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#1b1b1b\"/><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=\"#c9c3b8\"/><path d=\"M26 32 Q26 16 40 16 Q54 16 54 32 Q50 24 40 24 Q30 24 26 32 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\"/><path d=\"M12 12 L68 68 M68 12 L12 68\" stroke=\"#e0362e\" stroke-width=\"5\" stroke-linecap=\"round\" opacity=\".9\"/></svg>","solverRole":"astronomer","constraints":[{"type":"area","areas":["Dome"]},{"type":"beside","obj":"telescope"}]}],"victim":"V","murderer":"D","solution":{"G":[1,11],"V":[2,4],"D":[3,3],"B":[4,12],"K":[5,7],"F":[6,5],"A":[7,8],"J":[8,2],"E":[9,9],"H":[10,1],"I":[11,6],"C":[12,10]},"walkthrough":[{"place":[],"cand":{"V":[[2,4],[2,6],[3,4],[3,6],[4,5]],"C":[[1,11],[2,12],[11,9],[12,10]],"D":[[2,2],[3,3],[10,4],[12,4]],"I":[[9,6],[10,5],[10,7],[11,6]],"F":[[5,6],[5,7],[6,5],[6,8],[7,6],[8,5],[8,7]],"J":[[5,1],[5,2],[5,3],[6,1],[6,4],[7,1],[7,3],[8,2],[8,4]]},"text":"Vesna was found in the Dome beside the great telescope (R2C5–R3C5): R2C4, R2C6, R3C4, R3C6 or R4C5 (not R1C5 – Gregor was north of her, so she is not in row 1) – and the murderer is alone with her there. The escape first. Every way out of the Dome starts through the Hall or the Control Room. Jemima was in the Hall, so the murderer went through the Control Room; from there the exits lie beyond the Library – where Franka is, beside a bookcase – or beyond the Workshop. So the murderer walked Dome → Control Room → Workshop and out of the loading door: <b>the Control Room and the Workshop were empty</b>. That settles several statements: Daniela, beside a chair, is by the Dome chair (R2C2, R3C3) or the Lounge chair (R10C4, R12C4); Caspian, beside a sink, is by the Dark Room sink (R1C11, R2C12) or the Kitchen sink (R11C9, R12C10); Ivo, the only one beside a bench, is by the Terrace bench (R9C6, R10C5, R10C7, R11C6), since Jemima is alone in the Hall; Anselm and Barbara are beside a table in the Dark Room, the Library, the Lounge or the Kitchen. Two counting facts for later: rows 1–4 hold Vesna, the murderer and exactly two people in the Dark Room; and columns 9–12 can only be filled from the Dark Room and the Kitchen, so whenever the Dark Room holds two people, the Kitchen holds two as well."},{"place":[],"cand":{"C":[[1,11],[11,9],[12,10]],"D":[[2,2],[3,3],[10,4],[12,4]],"I":[[9,6],[10,5],[10,7],[11,6]],"V":[[2,4],[2,6],[3,4],[3,6],[4,5]]},"text":"<b>Could Caspian be at R2C12</b>, beside the Dark Room sink? His companion must be a student: Franka is in the Library, and Gregor would need a woman in the room, so it is Elias, in a corner of the Dark Room – R1C10 or R4C10. Rows 1–4 are then full: Vesna, the murderer, Caspian and Elias. But Gregor, north of Vesna, must also be in rows 1–3 – so Gregor is the murderer, in the Dome with Vesna, and Daniela, beside a chair, has to sit by the Lounge chair with exactly one companion. Now count rows 9–12: Daniela and her companion in the Lounge, Ivo on the Terrace, and two people in the Kitchen (columns 9 and 11 can only be filled from there) – five people for four rows. Contradiction: <b>Caspian is not at R2C12</b>."},{"place":[],"cand":{"C":[[1,11],[12,10]],"D":[[2,2],[3,3],[10,4],[12,4]],"I":[[9,6],[10,5],[10,7],[11,6]],"V":[[2,4],[2,6],[3,4],[3,6],[4,5]]},"text":"<b>Could Caspian be at R11C9</b>, beside the Kitchen sink? His student companion in the Kitchen can only be Elias (Gregor is north of Vesna, so up in rows 1–3), in the corner R9C12 – row 9 is his. Ivo, beside the Terrace bench, then has R10C5 or R10C7 left (R9C6 is in Elias’s row, R11C6 in Caspian’s) – row 10 – and the person exactly one row north of him, in row 9, would be Elias, a man, not the woman he saw. Contradiction: <b>Caspian is at R1C11 or R12C10</b>."},{"place":[],"cand":{"D":[[2,2],[3,3]],"C":[[1,11],[12,10]],"I":[[9,6],[10,5],[10,7],[11,6]],"V":[[2,4],[2,6],[3,4],[3,6],[4,5]]},"text":"<b>Could Daniela sit by the Lounge chair</b> (R10C4 or R12C4), with exactly one companion in the Lounge? Then rows 9–12 hold the two of them, Ivo on the Terrace, and the Kitchen’s people. The Dark Room holds exactly two people (rows 1–4: Vesna and the murderer are in the Dome), so of columns 9–12 only two are filled from the Dark Room and the other two – column 9 among them – must be filled from the Kitchen: two people in the Kitchen. Five people for rows 9–12 again. Contradiction: <b>Daniela is by the Dome chair, R2C2 or R3C3</b>, in the Dome with exactly one other person – Vesna. <b>Daniela is the murderer.</b>"},{"place":["D"],"cand":{"V":[[2,4],[2,6],[4,5]],"G":[[1,10],[1,11],[2,11],[2,12]],"C":[[1,11],[12,10]],"E":[[9,9],[9,12]],"I":[[10,5],[10,7],[11,6]],"B":[[4,10],[4,12],[6,7],[7,6],[7,8],[8,7],[10,3],[11,2],[11,4],[12,3]]},"text":"<b>Could Daniela be at R2C2?</b> Then row 2 is hers, Vesna is at R3C4, R3C6 or R4C5, and Gregor – north of Vesna, with a woman – is in the Dark Room: rows 1–4 are Daniela, Vesna, Gregor and Gregor’s woman, Barbara (beside the Dark Room table) or Helena. The Dark Room is full, so Caspian is by the Kitchen sink at R12C10, and his student is Elias, in the corner R9C9 or R9C12 – row 9 is his. Ivo is not in row 9, and in row 10 the person one row above him would be Elias: so Ivo is at R11C6. Column 9 can only be Elias’s: R9C9. Column 12: R2C12 lies in Daniela’s row and R9C12 in Elias’s, so only Barbara can fill it, at R4C12 – she is Gregor’s companion, row 4 is hers, Vesna is in row 3 and not in Ivo’s column 6: R3C4, and Gregor is in row 1. Helena, the woman one row north of Ivo, is in row 10. Rows 5–8 are Jemima’s and the Library’s three: Franka, her visitor – Kieran, since Helena is in row 10 – and Anselm. Kieran, the northernmost, is in row 5: R5C7 (R5C6 is Ivo’s column); Anselm, the southernmost and beside the table: R7C6 is Ivo’s column and R8C7 Kieran’s, so he is at R7C8, row 7; Franka, between them, is in row 6. That leaves row 8 to Jemima – but R8C2 is Daniela’s column and R8C4 is Vesna’s. Contradiction: <b>Daniela is at R3C3.</b>"},{"place":["E","G","B","C","I","V"],"cand":{"K":[[5,6],[5,7]],"A":[[7,6],[7,8],[8,7]],"F":[[6,5],[6,8],[7,6]],"J":[[5,1],[5,3],[6,1],[7,1],[7,3],[8,2]],"H":[[10,1],[10,2]]},"text":"Daniela at R3C3: the Dome is hers and Vesna’s, so Vesna is at R2C4, R2C6 or R4C5. Gregor, north of Vesna and with a woman, is in the Dark Room with Barbara or Helena; Caspian is by the Kitchen sink at <b>R12C10</b> (R11C9 is out) with Elias in the corner R9C9 or R9C12 – row 9 is Elias’s. Ivo cannot be in row 9, and in row 10 the person above him would be Elias: <b>Ivo is at R11C6</b>. Column 9 is Elias’s: <b>Elias at R9C9</b>. Row 1 can only hold Gregor (R1C10 or R1C11). Could Gregor’s woman be Helena, at R2C11 or R2C12? Then Vesna would be in row 4, at R4C5, and in the Library Kieran, the northernmost, would sit at R5C7 (R5C6 is Ivo’s column) and Anselm, the southernmost by the table, at R7C8 – so Franka would need a bookcase square in row 6, and R6C5 is Vesna’s column, R6C8 Anselm’s. Contradiction. So <b>Barbara is with Gregor</b>, in row 4; <b>Vesna is at R2C4</b> (column 6 is Ivo’s); column 11 is Gregor’s: <b>R1C11</b>; column 12 is Barbara’s: <b>R4C12</b>. Helena is the woman one row north of Ivo: row 10."},{"place":["K","A","F","J","H"],"text":"Rows 5–8 belong to Jemima (Hall) and the Library’s three: Franka, her visitor – Kieran, because Helena is in row 10 – and Anselm. Kieran, the northernmost in the Library, is in row 5: <b>R5C7</b> (R5C6 is Ivo’s column). Anselm, the southernmost and beside the table: R7C6 and R8C7 are in Ivo’s and Kieran’s columns, so <b>Anselm is at R7C8</b>, and Franka, between them, is in row 6: <b>R6C5</b> (R6C8 is Anselm’s column). Jemima takes row 8: <b>R8C2</b> (R8C4 is Vesna’s column). Helena, in row 10 and not in a corner: <b>R10C1</b> (R10C2 is Jemima’s column, R10C4 Vesna’s, R10C8 Anselm’s). Everyone is placed."},{"final":true,"text":"Case closed: the deputy director sat beside the Dome chair, alone with Vesna, and slipped out through the empty Control Room and Workshop. <b>Daniela is the murderer!</b>"}],"solver":{"rules":[{"type":"escape","links":[["Dome","Hall"],["Dome","Control Room"],["Control Room","Dark Room"],["Control Room","Library"],["Control Room","Workshop"],["Dark Room","Workshop"],["Hall","Library"],["Hall","Lounge"],["Library","Workshop"],["Library","Terrace"],["Workshop","Kitchen"],["Lounge","Terrace"],["Terrace","Kitchen"]],"exits":["Workshop","Terrace"]}],"occupiable":["chair","bench","armchair","sofa"]},"verification":{"tool":"tools/murdoku_solver.py","unique":true,"guessFree":true,"checked":"2026-09-17"}}