{"format":"murdoku-puzzle/1","id":"musicschool","version":1,"difficulty":"very-easy","level":2,"size":{"rows":6,"cols":6},"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":"De muziekschool","tagline":"Een muziekschool aan het meer · een meiavond in 1978 · het lenteconcert","author":"mathace","concept":"Murdoku – Manuel Garand (murdoku.com); unofficial fan-made case","created":"2026-09-29","story":"Een muziekschool in een klein stadje aan een meer, de avond van het lenteconcert in mei 1978. Boven warmde het koor zich op, in het strijkerslokaal hing de geur van hars en een zenuwachtige pianoleerling wachtte op haar beurt. Vadim, de directeur, had die middag tegen de leraren gezegd dat de school volgend jaar nog maar één van hen kon betalen – en dat hij zijn keuze al had gemaakt. Tijdens de pauze werd hij dood gevonden in het slagwerklokaal, naast de pauk. Vijf mensen waren in zijn buurt, en elk van hen legde een korte verklaring af – zoek degene die alleen met hem was.","rules":{"standard":["Elke <b>rij</b> en elke <b>kolom</b> bevat precies <b>één persoon</b>. Zodra je iemand plaatst, streep je de hele rij en kolom door.","<b>„Naast”</b> = direct links, rechts, boven of onder, en <b>in hetzelfde gebied</b>. Vakjes met voorwerpen (de piano, de harp, de potplant, de notenstandaard, de contrabas, het drumstel en de pauk) kunnen niet bezet worden; de krukken, de bank en de stoelen wel.","De moordenaar was <b>alleen met het slachtoffer</b>: niemand anders was in dat gebied."],"special":[]},"roleNames":{"teacher":"leraar","student":"leerling","victim":"slachtoffer"},"personGroups":[{"id":"teachers","name":"De leraren","persons":["A","B","V"]},{"id":"students","name":"De leerlingen","persons":["C","D","E"]}],"map":{"groups":[],"gaps":[],"areas":[{"id":"Piano Room","cells":[[1,1],[1,2],[1,3],[2,1],[2,2]],"fill":"#efdcc8","pattern":"carpet","labelAt":[2,2],"name":"Pianolokaal"},{"id":"Hallway","cells":[[1,4],[2,3],[2,4],[2,5],[3,4],[3,5],[4,5]],"fill":"#e6dccd","pattern":"planks","labelAt":[3,4],"name":"Gang"},{"id":"String Room","cells":[[1,5],[1,6],[2,6],[3,6]],"fill":"#eadfcb","pattern":"boards","labelAt":[2,6],"name":"Strijkerslokaal"},{"id":"Choir Hall","cells":[[3,1],[3,2],[3,3],[4,1],[4,2],[4,3],[4,4],[5,1],[5,2],[5,3],[6,1],[6,2]],"fill":"#e9e4da","pattern":"boards","labelAt":[4,2],"name":"Koorzaal"},{"id":"Drum Room","cells":[[4,6],[5,4],[5,5],[5,6],[6,3],[6,4],[6,5],[6,6]],"fill":"#e3e9ec","pattern":"tiles","labelAt":[6,5],"name":"Slagwerklokaal"}],"objectTypes":{"bench":{"occupiable":true,"name":"bank","icon":"<rect x=\"7\" y=\"8\" width=\"3.2\" height=\"31\" fill=\"#5e4127\"/><rect x=\"35.8\" y=\"8\" width=\"3.2\" height=\"31\" fill=\"#5e4127\"/><rect x=\"4\" y=\"8\" width=\"38\" height=\"6\" rx=\"1.5\" fill=\"#a5733f\" stroke=\"#4e3a1e\" stroke-width=\"1.3\"/><rect x=\"4\" y=\"17.5\" width=\"38\" height=\"6\" rx=\"1.5\" fill=\"#c08a50\" stroke=\"#6b4a26\" stroke-width=\"1.2\"/><rect x=\"4\" y=\"25\" width=\"38\" height=\"6\" rx=\"1.5\" fill=\"#c08a50\" stroke=\"#6b4a26\" stroke-width=\"1.2\"/><rect x=\"4\" y=\"32.5\" width=\"38\" height=\"6\" rx=\"1.5\" fill=\"#c08a50\" stroke=\"#6b4a26\" 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stroke-width=\"2.5\"/><path d=\"M14 42 l9 -6 l9 6\" fill=\"none\" stroke=\"#3d444b\" stroke-width=\"2.5\"/>"},"timpani":{"occupiable":false,"name":"pauk","icon":"<ellipse cx=\"23\" cy=\"16\" rx=\"18\" ry=\"9\" fill=\"#e6cfa8\" stroke=\"#8a6a3a\" stroke-width=\"2\"/><path d=\"M5 16 q4 22 18 24 q14 -2 18 -24\" fill=\"#b3782f\" stroke=\"#7a4a12\" stroke-width=\"1.5\"/><line x1=\"10\" y1=\"6\" x2=\"20\" y2=\"13\" stroke=\"#5b5852\" stroke-width=\"2\"/><circle cx=\"9\" cy=\"5\" r=\"2.5\" fill=\"#f4efe6\" stroke=\"#5b5852\"/>"}},"wallTypes":{},"objects":[{"cell":[1,1],"type":"piano"},{"cell":[1,2],"type":"stool"},{"cell":[1,5],"type":"harp"},{"cell":[2,4],"type":"plant"},{"cell":[3,2],"type":"stand"},{"cell":[3,5],"type":"bench"},{"cell":[3,6],"type":"doublebass"},{"cell":[4,1],"type":"chair"},{"cell":[4,3],"type":"chair"},{"cell":[5,5],"type":"drumkit"},{"cell":[6,3],"type":"stool"},{"cell":[6,6],"type":"timpani"}],"wallFeatures":[],"extras":[],"cellSize":46},"persons":[{"id":"A","name":"Amadeo","gender":"M","role":"teacher","color":"#c62828","avatar":{"bg":"#35607a","skin":"#e7b98f","hair":"#1c1a1a","style":"slick","shirt":"#1b1b1b","beard":true},"clue":"Hij was naast de <b>piano</b>.","job":"de pianoleraar","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Amadeo\"><rect width=\"80\" height=\"80\" fill=\"#35607a\"/><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=\"#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=\"#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":"teacher","constraints":[{"type":"beside","obj":"piano"}]},{"id":"B","name":"Birgitta","gender":"F","role":"teacher","color":"#2e7d32","avatar":{"bg":"#c62828","skin":"#f6d8c0","hair":"#d9b464","style":"ponytail","shirt":"#2f3b4c","earrings":true},"clue":"Zij was <b>niet</b> naast het <b>drumstel</b>.","job":"de slagwerklerares","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Birgitta\"><rect width=\"80\" height=\"80\" fill=\"#c62828\"/><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\"/><circle cx=\"26\" cy=\"41\" r=\"1.8\" fill=\"#f0c95a\"/><circle cx=\"54\" cy=\"41\" r=\"1.8\" fill=\"#f0c95a\"/></svg>","solverRole":"teacher","constraints":[{"type":"not_beside","obj":"drumkit"}]},{"id":"C","name":"Cornell","gender":"M","role":"student","color":"#1565c0","avatar":{"bg":"#2e7d32","skin":"#d9a57a","hair":"#3a2a1c","style":"short","shirt":"#f2a53a"},"clue":"Hij was in de <b>Gang</b>.","job":"een celloleerling","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Cornell\"><rect width=\"80\" height=\"80\" fill=\"#2e7d32\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#f2a53a\"/><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=\"#3a2a1c\"/><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":"area","areas":["Hallway"]}]},{"id":"D","name":"Doreen","gender":"F","role":"student","color":"#6a1b9a","avatar":{"bg":"#ad1457","skin":"#f3d3b5","hair":"#7a4a2a","style":"long","shirt":"#e26d8a","headband":"#f4efe6"},"clue":"Zij zat op een <b>stoel</b>.","job":"een jonge sopraan van het koor","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Doreen\"><rect width=\"80\" height=\"80\" fill=\"#ad1457\"/><path d=\"M22 42 Q20 14 40 14 Q60 14 58 42 L62 72 L18 72 Z\" fill=\"#7a4a2a\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#e26d8a\"/><rect x=\"34\" y=\"44\" width=\"12\" height=\"13\" fill=\"#f3d3b5\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#f3d3b5\"/><path d=\"M26 36 Q26 16 40 16 Q54 16 54 36 Q52 24 40 24 Q28 24 26 36 Z\" fill=\"#7a4a2a\"/><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=\"#f4efe6\"/></svg>","solverRole":"student","constraints":[{"type":"on","obj":"chair"}]},{"id":"E","name":"Evadne","gender":"F","role":"student","color":"#e65100","avatar":{"bg":"#6a1b9a","skin":"#f0cdb0","hair":"#1c1a1a","style":"bob","shirt":"#7fc4d8","glasses":true},"clue":"Zij was de <b>enige</b> die op een <b>kruk</b> zat.","job":"een pianoleerling die op haar beurt wachtte","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Evadne\"><rect width=\"80\" height=\"80\" fill=\"#6a1b9a\"/><path d=\"M22 40 Q22 14 40 14 Q58 14 58 40 L58 58 L22 58 Z\" fill=\"#1c1a1a\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#7fc4d8\"/><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=\"#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\"/></svg>","solverRole":"student","constraints":[{"type":"only_on","obj":"stool"}]},{"id":"V","name":"Vadim","gender":"M","role":"victim","color":"#1b1b1b","avatar":{"bg":"#5a2a2a","skin":"#f1c8a5","hair":"#8a8278","style":"bald","shirt":"#264653","beard":true,"glasses":true},"clue":"<b>Het slachtoffer.</b> Hij werd gevonden in het <b>Slagwerklokaal</b>, naast de <b>pauk</b> – alleen met de moordenaar.","job":"de directeur van de muziekschool","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Vadim\"><rect width=\"80\" height=\"80\" fill=\"#5a2a2a\"/><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 30 Q26 22 30 20 L30 34 Q26 34 26 30 Z\" fill=\"#8a8278\"/><path d=\"M54 30 Q54 22 50 20 L50 34 Q54 34 54 30 Z\" fill=\"#8a8278\"/><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=\"#8a8278\"/><path d=\"M12 12 L68 68 M68 12 L12 68\" stroke=\"#e0362e\" stroke-width=\"5\" stroke-linecap=\"round\" opacity=\".9\"/></svg>","solverRole":"teacher","constraints":[{"type":"area","areas":["Drum Room"]},{"type":"beside","obj":"timpani"}]}],"victim":"V","murderer":"B","solution":{"E":[1,2],"A":[2,1],"C":[3,5],"D":[4,3],"V":[5,6],"B":[6,4]},"walkthrough":[{"place":["A"],"cand":{"C":[[1,4],[3,4],[3,5],[4,5]],"D":[[4,3]],"E":[[1,2],[6,3]]},"text":"Amadeo was naast de piano (R1C1). De buurvakjes zijn R2C1 en R1C2 – en R1C2 is een kruk. Evadne was de enige die op een kruk zat, dus Amadeo kan daar niet zijn: <b>Amadeo is op R2C1</b>. Streep rij 2 en kolom 1 door."},{"place":["D","E"],"cand":{"C":[[3,4],[3,5]]},"text":"Doreen zat op een stoel. De stoelen staan op R4C1 en R4C3, en kolom 1 is van Amadeo: <b>Doreen is op R4C3</b>. Evadne was de enige op een kruk: de krukken staan op R1C2 en R6C3, en kolom 3 is van Doreen: <b>Evadne is op R1C2</b>."},{"place":["B","C"],"cand":{},"text":"Cornell was in de Gang. Rij 1, 2 en 4 zijn bezet, dus blijven alleen R3C4 en R3C5 over – allebei in rij 3, die daarmee van hem is. Birgitta was niet naast het drumstel. Voor haar blijven rij 5 en 6 en kolom 4, 5 en 6 over. R5C5 is het drumstel en R6C6 de pauk; R5C4, R5C6 en R6C5 liggen direct naast het drumstel, in het Slagwerklokaal. Alleen R6C4 blijft over: <b>Birgitta is op R6C4</b>. Kolom 4 is nu van haar, dus <b>Cornell is op R3C5</b>, op de bank in de Gang."},{"final":true,"text":"Zaak gesloten: het laatste vrije vakje, R5C6, is dat van het slachtoffer – in het Slagwerklokaal, naast de pauk, precies zoals op zijn kaart staat, hoewel we het nooit nodig hadden. Vadim was daar alleen met de slagwerklerares. <b>Birgitta is de moordenaar!</b>"}],"solver":{"rules":[],"occupiable":["bench","chair","stool"]},"verification":{"tool":"tools/murdoku_solver.py","unique":true,"guessFree":true,"checked":"2026-09-29"}}