{"format":"murdoku-puzzle/1","id":"skatepond","version":1,"difficulty":"medium","level":5,"size":{"rows":8,"cols":8},"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 schaatsvijver","tagline":"Een dorpsvijver om op te schaatsen · een winteravond · de opwarmhut bleef koud","author":"mathace","concept":"Murdoku – Manuel Garand (murdoku.com); unofficial fan-made case","created":"2026-10-06","story":"Als de dorpsvijver dichtvriest, opent Villő haar opwarmhut aan de oever: glühwein op de kachel, banken eromheen en ernaast schaatsen te huur. Die avond waren er vier schaatsers buiten – een ijshockeyspeler, een kunstschaatsster, een snelschaatser en een beginner –, en Villős drie helpers, de ijsmeester, de schaatsverhuurster en de glühweinverkoopster, waren ergens rond de vijver. Villő zelf was naar binnen gegaan om de kachel te stoken. Toen de schaatsers een uur later verkleumd binnenkwamen, was de hut koud en donker, en de eigenares lag dood naast de kachel. De lantaarns hadden de hele avond de hele vijver verlicht, dus iedereen kon zeggen waar hij was geweest.","rules":{"standard":["Elke <b>rij</b> en elke <b>kolom</b> bevat precies <b>één persoon</b>. Zodra je iemand plaatst, streep je zijn hele rij en kolom door.","<b>„Naast”</b> = direct links, rechts, erboven of eronder, en <b>in hetzelfde gebied</b>. Vakjes met een voorwerp (de dennen, de glühweinketel, de schaatsenrekken, de kachel, de balie, de wegwijzer, de lantaarns, de pylonen, het kampvuur, de ton en de sneeuwpop) kunnen niet bezet worden; de banken en de slee wel.","Richtingen slaan op rijen en kolommen, niet op dezelfde lijn: <i>„precies één rij ten noorden van hem was een vrouw”</i> = de persoon in de rij direct erboven is een vrouw, in eender welke kolom.","De moordenaar was <b>alleen met het slachtoffer</b>: niemand anders was in dat gebied."],"special":[]},"roleNames":{"skater":"schaatser","staff":"medewerker","victim":"slachtoffer"},"personGroups":[{"id":"skaters","name":"Schaatsers","persons":["A","B","C","D"]},{"id":"staff","name":"Personeel","persons":["E","F","G"]},{"id":"owner","name":"De eigenares","persons":["V"]}],"map":{"groups":[],"gaps":[],"areas":[{"id":"Grove","cells":[[1,1],[1,2],[1,3],[2,1],[2,2],[3,1],[3,2]],"fill":"#dce8d0","pattern":"marble","labelAt":[1,2],"name":"Dennenbos"},{"id":"Warming 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d=\"M36 43 Q40 46 44 43\" fill=\"none\" stroke=\"#a5735a\" stroke-width=\"1.4\"/><path d=\"M24 31 Q24 11 40 11 Q56 11 56 31 Q48 21 40 21 Q32 21 24 31 Z\" fill=\"#5b2c6f\"/><rect x=\"23\" y=\"26\" width=\"34\" height=\"6\" rx=\"3\" fill=\"#5b2c6f\" stroke=\"rgba(0,0,0,.18)\"/><circle cx=\"40\" cy=\"10\" r=\"4\" fill=\"#f4efe6\"/></svg>","solverRole":"staff","constraints":[{"type":"beside","obj":"campfire"}]},{"id":"F","name":"Farkas","gender":"M","role":"staff","color":"#00838f","avatar":{"bg":"#5d4037","skin":"#e7b98f","hair":"#b7482c","style":"short","shirt":"#8b7a5a","beard":true,"cap":true},"clue":"Hij was naast een <b>bank</b>.","job":"ijsmeester","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Farkas\"><rect width=\"80\" height=\"80\" fill=\"#5d4037\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#8b7a5a\"/><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 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=\"M27 38 Q30 52 40 53 Q50 52 53 38 Q50 47 40 48 Q30 47 27 38 Z\" fill=\"#b7482c\"/><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":"beside","obj":"bench"}]},{"id":"G","name":"Gyopár","gender":"F","role":"staff","color":"#ad1457","avatar":{"bg":"#3d2a5a","skin":"#f6d8c0","hair":"#1c1a1a","style":"bob","shirt":"#f2a53a","scarf":"#c62828","apron":true},"clue":"Ze was in de <b>laatste kolom</b>.","job":"glühweinverkoopster","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Gyopár\"><rect width=\"80\" height=\"80\" fill=\"#3d2a5a\"/><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=\"#f2a53a\"/><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\"/><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\"/><path d=\"M30 58 Q40 70 50 58 L48 66 Q40 76 32 66 Z\" fill=\"#c62828\"/></svg>","solverRole":"staff","constraints":[{"type":"col","cols":[8]}]},{"id":"V","name":"Villő","gender":"F","role":"victim","color":"#1b1b1b","avatar":{"bg":"#5a2a2a","skin":"#f3d3b5","hair":"#8a8278","style":"bun","shirt":"#8b1a1a","necklace":true,"scarf":"#f4efe6"},"clue":"<b>Het slachtoffer.</b> Ze werd gevonden in de <b>Opwarmhut</b>, naast de <b>kachel</b> – alleen met de moordenaar.","job":"eigenares van de opwarmhut","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Villő\"><rect width=\"80\" height=\"80\" fill=\"#5a2a2a\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#8b1a1a\"/><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=\"#f3d3b5\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#f3d3b5\"/><circle cx=\"40\" cy=\"15\" r=\"7\" fill=\"#8a8278\"/><path d=\"M26 32 Q26 16 40 16 Q54 16 54 32 Q50 24 40 24 Q30 24 26 32 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\"/><path d=\"M30 58 Q40 70 50 58 L48 66 Q40 76 32 66 Z\" fill=\"#f4efe6\"/><path d=\"M12 12 L68 68 M68 12 L12 68\" stroke=\"#e0362e\" stroke-width=\"5\" stroke-linecap=\"round\" opacity=\".9\"/></svg>","solverRole":"owner","constraints":[{"type":"area","areas":["Warming Hut"]},{"type":"beside","obj":"stove"}]}],"victim":"V","murderer":"F","solution":{"F":[1,6],"A":[2,1],"V":[3,4],"D":[4,7],"B":[5,3],"G":[6,8],"C":[7,5],"E":[8,2]},"walkthrough":[{"place":["V"],"cand":{"A":[[2,1],[2,3],[2,5],[2,6]],"B":[[5,3],[5,5],[6,6],[7,5]],"C":[[1,2],[1,3],[1,6],[4,3],[4,5],[4,6],[5,1],[5,2],[5,3],[5,5],[5,6],[6,1],[6,2],[6,3],[6,6],[7,1],[7,3],[7,5],[7,6],[8,2],[8,3],[8,5],[8,6]],"D":[[1,7],[4,7],[5,7],[6,7],[8,7]],"E":[[7,1],[8,2]],"F":[[1,6],[8,3]],"G":[[4,8],[5,8],[6,8],[7,8]]},"text":"Villő werd gevonden naast de kachel (R2C4) in de opwarmhut: op R1C4, R2C3, R2C5 of R3C4 – en de moordenaar was daar alleen met haar, dus in de opwarmhut zijn precies twee mensen. De balie (R2C7) was ergens in Ajtony’s rij: hij is in rij 2 (R2C1, R2C3, R2C5, R2C6 of R2C8), en hij zegt dat precies één rij ten noorden van hem – in rij 1 – een man was. Waar kan Villő zijn? R2C3 en R2C5 liggen in Ajtony’s rij. R1C4 ligt in rij 1, waarvan de persoon een man is – en Villő is een vrouw. Er blijft één vakje over: <b>Villő is op R3C4.</b> Rij 3 en kolom 4 zijn van haar, rij 2 is van Ajtony. De balie was ergens in Dömötörs kolom: hij is in kolom 7. Gyopár is in de laatste kolom, kolom 8, maar R2C8 ligt in Ajtony’s rij: ze is op de oever, op R4C8, R5C8, R6C8 of R7C8. Edina was naast het kampvuur (R7C2): op R7C1 of R8C2, ook op de oever."},{"place":["E","F"],"cand":{"A":[[2,1]],"B":[[5,3],[5,5],[7,5]],"C":[[4,3],[4,5],[5,3],[5,5],[6,3],[7,3],[7,5]],"D":[[4,7],[5,7],[6,7]],"G":[[4,8],[5,8],[6,8],[7,8]]},"text":"Wie kan in kolom 2 zijn? De vrije vakjes zijn R1C2 in het dennenbos, R5C2 en R6C2 op het ijs en R8C2 op de oever. Ajtony is in rij 2, waar R2C2 een den is. Bíborka was naast een pylon: R5C3, R5C5, R6C6 of R7C5 (R4C4 en R6C4 liggen in Villős kolom) – dus in de kolommen 3 tot en met 6. Dömötör is in kolom 7, Gyopár in kolom 8. Farkas was naast een bank – R1C6, R2C3, R2C5, R3C4, R3C6 of R8C3 – en de rijen 2 en 3 zijn van Ajtony en Villő: voor hem blijven alleen R1C6 of R8C3 over, geen van beide in kolom 2. Celesztin was alleen met een vrouw: in het dennenbos kan geen vrouw bij hem zijn (Bíborka is op het ijs, Edina en Gyopár op de oever, Villő in de opwarmhut); op R5C2 of R6C2 zou hij ten westen van Bíborka zijn, die juist de westelijkste persoon op het ijs was; en op de oever zijn al twee vrouwen, Edina en Gyopár. Voor kolom 2 blijft alleen Edina over: <b>Edina is op R8C2</b>, op de bank, naast het kampvuur. Rij 8 is van haar, dus Farkas is niet op R8C3: <b>Farkas is op R1C6</b>, in de opwarmhut, naast de bank op R2C6. In de hut zijn Villő en precies één andere persoon, de moordenaar – en dat is Farkas: niemand anders is in de opwarmhut."},{"place":["A","D"],"cand":{"B":[[5,3],[5,5],[7,5]],"C":[[5,3],[5,5],[6,3],[7,3],[7,5]],"G":[[5,8],[6,8],[7,8]]},"text":"Ajtony is in rij 2: R2C3, R2C5 en R2C6 liggen in de volle opwarmhut, R2C8 in Gyopárs kolom. <b>Ajtony is op R2C1</b>, in het dennenbos. Dömötör is in kolom 7: R1C7 ligt in Farkas’ rij, R3C7 in die van Villő, R8C7 in die van Edina – er blijven R4C7 (de slee, op de oever), R5C7 of R6C7 (ijs) over. Waar is Celesztin, die alleen met een vrouw was? Niet in het dennenbos (daar is geen vrouw), niet in de opwarmhut (vol), niet bij de verhuur (de vrije vakjes R2C8 en R3C7 liggen in de rijen van Ajtony en Villő), niet op de oever (twee vrouwen, Edina en Gyopár). Hij is op het ijs, en de ene vrouw bij hem is Bíborka, die daar naast een pylon was. Op het ijs zijn dus alleen Bíborka en Celesztin: Dömötör is niet op R5C7 of R6C7. <b>Dömötör is op R4C7</b>, op de slee."},{"place":["B","C","G"],"cand":{},"text":"Bíborka was naast een pylon: R5C3, R5C5 of R7C5 (R6C6 ligt in Farkas’ kolom). Ze was de westelijkste persoon op het ijs, dus Celesztin, de enige andere persoon daar, is in een kolom ten oosten van de hare. Zijn vrije vakjes zijn R5C3, R5C5, R6C3, R7C3 en R7C5 – de rijen 1 tot en met 4 en 8 en de kolommen 1, 2, 4, 6 en 7 zijn vergeven, kolom 8 is van Gyopár – en geen enkele ligt ten oosten van kolom 5. Dus Bíborka is niet in kolom 5: <b>Bíborka is op R5C3.</b> Celesztin is ten oosten van kolom 3 en buiten rij 5: <b>Celesztin is op R7C5.</b> Gyopár is in kolom 8, en de rijen 4, 5 en 7 zijn vergeven: <b>Gyopár is op R6C8.</b> Iedereen is geplaatst."},{"final":true,"text":"Zaak gesloten: Villő was alleen in de opwarmhut met de ijsmeester. <b>Farkas is de moordenaar!</b>"}],"solver":{"rules":[],"occupiable":["bench","sled"]},"verification":{"tool":"tools/murdoku_solver.py","unique":true,"guessFree":true,"checked":"2026-10-06"},"score":9.1233}