{"format":"murdoku-puzzle/1","id":"vaduz","version":1,"difficulty":"hard","level":7,"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":"The Silvester Ball","tagline":"The castle above Vaduz · New Year’s Eve 1912, midnight · a black-and-white ball on a chequered floor","author":"mathace","concept":"Murdoku – Manuel Garand (murdoku.com); unofficial fan-made case","created":"2026-10-23","story":"The last night of 1912 in the castle above Vaduz. Vinzent, the castle steward, gave a black-and-white ball in the newly restored Knights’ Hall: everyone wore a single colour, and on the chequered marble floor kept to the squares of that colour. When the bells rang midnight, Vinzent was found dead in the Fireplace Room. Nine people were in the castle. The midnight waltz was never danced.","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 pillar, the tables, the candelabra, the Christmas tree, the piano, the fireplace…) cannot be occupied; the chairs, the benches, the sofa and the armchairs can. An armchair is not a chair. A <b>corner</b> of an area is a square of that area that borders the outside (another area or the edge of the board) on one horizontal and one vertical side.","The murderer was <b>alone with the victim</b>: nobody else was in that area."],"special":["<b>The floor is a chessboard of black and white marble squares (R1C1 is white, the colours alternate): whoever was dressed in black was on a black square, whoever was dressed in white on a white square.</b>","The colour of each person’s costume is shown on their card. Whoever was on a chair, a bench, the sofa or an armchair counts as being on that square."],"notes":["An armchair is not a chair.","<i>“On the same diagonal”</i> = as many rows apart as columns."],"example":"<i>Example:</i> somebody dressed in black could only be on a black square, even when sitting on a chair."},"roleNames":{"family":"family","guest":"guest","staff":"staff","victim":"victim"},"personGroups":[{"id":"family","name":"The steward’s family","persons":["A","B","C","V"]},{"id":"guests","name":"Guests from the town","persons":["D","E","F"]},{"id":"staff","name":"The household","persons":["G","H","I"]}],"map":{"groups":[],"gaps":[],"areas":[{"id":"Entrance Hall","cells":[[1,1],[1,2],[1,3],[2,1],[2,2],[2,3],[2,4],[3,2],[3,3]],"fill":"#e6e2d8","pattern":"marble","labelAt":[1,2.5],"name":"Entrance Hall"},{"id":"Tower Room","cells":[[1,4],[1,5],[1,6],[2,5],[2,6],[3,6],[3,7]],"fill":"#e0dcd2","pattern":"marble","labelAt":[1,5.5],"name":"Tower 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square","white":"white square"},"costumes":{"black":"dressed in black","white":"dressed in white"}},"cellSize":46},"persons":[{"id":"A","name":"Angelika","gender":"F","role":"family","costume":"black","color":"#c62828","avatar":{"bg":"#3b2f4a","skin":"#f0cdb0","hair":"#2b1c14","style":"bun","shirt":"#151318","necklace":true},"clue":"She was in the <b>Gallery</b>.","job":"the steward’s wife","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Angelika\"><rect width=\"80\" height=\"80\" fill=\"#3b2f4a\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#151318\"/><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=\"#2b1c14\"/><path d=\"M26 32 Q26 16 40 16 Q54 16 54 32 Q50 24 40 24 Q30 24 26 32 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\"/></svg>","solverRole":"family","constraints":[{"type":"area","areas":["Gallery"]}]},{"id":"B","name":"Burgi","gender":"F","role":"family","costume":"white","color":"#2e7d32","avatar":{"bg":"#6e2c4b","skin":"#f6d8c0","hair":"#d9b464","style":"ponytail","shirt":"#f4f1ea","earrings":true},"clue":"Somebody else in her area was sitting in a <b>chair</b>. She was <b>alone with a woman</b>.","job":"the steward’s daughter","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Burgi\"><rect width=\"80\" height=\"80\" fill=\"#6e2c4b\"/><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=\"#f4f1ea\"/><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\"/><circle cx=\"26\" cy=\"41\" r=\"1.8\" fill=\"#f0c95a\"/><circle cx=\"54\" cy=\"41\" r=\"1.8\" fill=\"#f0c95a\"/></svg>","solverRole":"family","constraints":[{"type":"with_on","obj":"chair"},{"type":"with_gender","gender":"F","exact":true}]},{"id":"C","name":"Christoph","gender":"M","role":"family","costume":"black","color":"#1565c0","avatar":{"bg":"#2f4858","skin":"#f1c8a5","hair":"#5a3a22","style":"short","shirt":"#151318","mustache":true},"clue":"He was the <b>only man</b> beside the <b>staircase</b>.","job":"forestry student","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Christoph\"><rect width=\"80\" height=\"80\" fill=\"#2f4858\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#151318\"/><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=\"#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\"/><path d=\"M33 41 Q40 37 47 41 Q40 43 33 41 Z\" fill=\"#3a2a1c\"/></svg>","solverRole":"family","constraints":[{"type":"only_beside","obj":"stairs","gender":"M"}]},{"id":"D","name":"David","gender":"M","role":"guest","costume":"white","color":"#6a1b9a","avatar":{"bg":"#7a6a3c","skin":"#e4b998","hair":"#1c1a1a","style":"slick","shirt":"#f4f1ea","beard":true,"glasses":true},"clue":"A <b>table</b> was somewhere in his <b>column</b>.","job":"notary","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"David\"><rect width=\"80\" height=\"80\" fill=\"#7a6a3c\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#f4f1ea\"/><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\"/><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=\"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":"col_has","obj":"table"}]},{"id":"E","name":"Elisabeth","gender":"F","role":"guest","costume":"white","color":"#e65100","avatar":{"bg":"#8c3a5a","skin":"#f0cdb0","hair":"#8a5a3a","style":"bun","shirt":"#f4f1ea","glasses":true},"clue":"She was <b>with Burgi</b>. She was <b>sitting on a seat</b> (an <b>armchair</b>, a <b>bench</b>, a <b>chair</b> or the <b>sofa</b>).","job":"schoolteacher","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Elisabeth\"><rect width=\"80\" height=\"80\" fill=\"#8c3a5a\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#f4f1ea\"/><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=\"#8a5a3a\"/><path d=\"M26 32 Q26 16 40 16 Q54 16 54 32 Q50 24 40 24 Q30 24 26 32 Z\" fill=\"#8a5a3a\"/><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","q":"B"},{"type":"on_any","objs":["armchair","bench","chair","sofa"]}]},{"id":"F","name":"Fidelis","gender":"M","role":"guest","costume":"white","color":"#00838f","avatar":{"bg":"#35607a","skin":"#f1c8a5","hair":"#c9c3b8","style":"short","shirt":"#f4f1ea","mustache":true,"bow":true},"clue":"There was <b>no other man</b> in his area.","job":"bandmaster","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Fidelis\"><rect width=\"80\" height=\"80\" fill=\"#35607a\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#f4f1ea\"/><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 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\"/><path d=\"M33 41 Q40 37 47 41 Q40 43 33 41 Z\" fill=\"#3a2a1c\"/></svg>","solverRole":"guest","constraints":[{"type":"no_gender_in_area","gender":"M"}]},{"id":"G","name":"Gerold","gender":"M","role":"staff","costume":"white","color":"#ad1457","avatar":{"bg":"#3d5a6e","skin":"#e7b98f","hair":"#2b1c14","style":"slick","shirt":"#f4f1ea","mustache":true,"bow":true},"clue":"He was sitting on an <b>armchair</b> or a <b>bench</b>.","job":"footman","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Gerold\"><rect width=\"80\" height=\"80\" fill=\"#3d5a6e\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#f4f1ea\"/><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=\"#e7b98f\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#e7b98f\"/><path d=\"M26 30 Q27 16 44 15 Q56 15 55 26 Q48 22 40 23 Q30 24 26 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":"staff","constraints":[{"type":"on_any","objs":["armchair","bench"]}]},{"id":"H","name":"Hildegard","gender":"F","role":"staff","costume":"black","color":"#5d4037","avatar":{"bg":"#5a6e3d","skin":"#f6d8c0","hair":"#8a5a3a","style":"bun","shirt":"#151318","apron":true,"cap":true},"clue":"She was <b>not</b> in the <b>Tower Room</b>.","job":"cook","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Hildegard\"><rect width=\"80\" height=\"80\" fill=\"#5a6e3d\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#151318\"/><path d=\"M28 80 L30 62 Q40 58 50 62 L52 80 Z\" fill=\"#f4efe6\"/><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=\"#8a5a3a\"/><path d=\"M26 32 Q26 16 40 16 Q54 16 54 32 Q50 24 40 24 Q30 24 26 32 Z\" fill=\"#8a5a3a\"/><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=\"M24 24 Q24 11 40 11 Q56 11 56 24 Z\" fill=\"#22406f\"/><rect x=\"22\" y=\"22\" width=\"36\" height=\"5\" rx=\"2\" fill=\"#12213a\"/><circle cx=\"40\" cy=\"18\" r=\"2.6\" fill=\"#f0b429\"/></svg>","solverRole":"staff","constraints":[{"type":"not_area","areas":["Tower Room"]}]},{"id":"I","name":"Ina","gender":"F","role":"staff","costume":"white","color":"#f9a825","avatar":{"bg":"#3c6e6a","skin":"#f1c8a5","hair":"#5a3a22","style":"bob","shirt":"#f4f1ea","apron":true,"cap":true},"clue":"She and <b>David</b> were on the <b>same diagonal</b>.","job":"chambermaid","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Ina\"><rect width=\"80\" height=\"80\" fill=\"#3c6e6a\"/><path d=\"M22 40 Q22 14 40 14 Q58 14 58 40 L58 58 L22 58 Z\" fill=\"#5a3a22\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#f4f1ea\"/><path d=\"M28 80 L30 62 Q40 58 50 62 L52 80 Z\" fill=\"#f4efe6\"/><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 36 Q26 16 40 16 Q54 16 54 36 Q52 24 40 24 Q28 24 26 36 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\"/><path d=\"M24 24 Q24 11 40 11 Q56 11 56 24 Z\" fill=\"#22406f\"/><rect x=\"22\" y=\"22\" width=\"36\" height=\"5\" rx=\"2\" fill=\"#12213a\"/><circle cx=\"40\" cy=\"18\" r=\"2.6\" fill=\"#f0b429\"/></svg>","solverRole":"staff","constraints":[{"type":"same_diagonal","q":"D"}]},{"id":"V","name":"Vinzent","gender":"M","role":"family","costume":"black","color":"#1b1b1b","avatar":{"bg":"#2b1c14","skin":"#e4b998","hair":"#c9c3b8","style":"slick","shirt":"#151318","beard":true},"clue":"<b>The victim.</b> He was found in the <b>Fireplace Room</b>, beside the <b>fireplace</b> – alone with the murderer.","job":"the castle steward, the host","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Vinzent\"><rect width=\"80\" height=\"80\" fill=\"#2b1c14\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#151318\"/><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=\"#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\"/><path d=\"M27 38 Q30 52 40 53 Q50 52 53 38 Q50 47 40 48 Q30 47 27 38 Z\" fill=\"#c9c3b8\"/></svg>","solverRole":"family","constraints":[{"type":"area","areas":["Fireplace Room"]},{"type":"beside","obj":"fireplace"}]}],"victim":"V","solver":{"rules":[{"type":"tiles","black":1}],"occupiable":["bench","chair","sofa","armchair"]},"score":105.053,"seal":{"board":"e2f98490c06e62f10abbea0791d3203f4a00287524d60007547dfc42481c47ed","murderer":"3f5b245098f2478fc6f1d9b108bd76a0c2490384dea9049e0c8dd9d35c3489c3"}}