{"format":"murdoku-puzzle/1","id":"lake","version":1,"difficulty":"easy","level":3,"size":{"rows":5,"cols":5},"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":"Het botenmeer","tagline":"Een Victoriaans stadspark · een zondag in juli 1895 · drie boten op het water","author":"mathace","concept":"Murdoku – Manuel Garand (murdoku.com); unofficial fan-made case","created":"2026-09-29","story":"Londen, een hete zondagmiddag in juli 1895. In het stadspark stemde het harmonieorkest zijn instrumenten, dreven drie roeiboten over het meer, was de rozentuin in volle bloei en werd op het caféterras limonade geserveerd in de schaduw. Vyvyan, een bankier die ervan bekendstond nooit een fooi te geven, had met zijn krant plaatsgenomen aan de tafel op het terras. Toen het orkest om vier uur inzette, werd hij ineengezakt naast die tafel gevonden. Slechts vier mensen waren in zijn buurt geweest, en elk van hen legde een verklaring van één zin af – zoek uit wie er 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 zijn hele rij en kolom door.","<b>„Naast”</b> = direct links, rechts, boven of onder, en <b>in hetzelfde gebied</b>. Vakjes met voorwerpen (de tafel, de bloemperken, het water, de boei en de fontein) kunnen niet bezet worden; de stoelen, de roeiboten en de bank wel.","De moordenaar was <b>alleen met het slachtoffer</b>: niemand anders was in dat gebied."],"special":[]},"roleNames":{"visitor":"bezoeker","staff":"personeel","victim":"slachtoffer"},"personGroups":[{"id":"visitors","name":"Bezoekers","persons":["A","B","V"]},{"id":"staff","name":"Het parkpersoneel","persons":["C","D"]}],"map":{"groups":[],"gaps":[],"areas":[{"id":"Café Terrace","cells":[[1,1],[1,2],[1,3],[2,1],[2,2],[3,1]],"fill":"#f1e3cf","pattern":"tiles","labelAt":[2,2],"name":"Caféterras"},{"id":"Lake","cells":[[2,3],[2,4],[3,2],[3,3],[3,4],[4,2],[4,3]],"fill":"#cfe3ee","labelAt":[3,3],"name":"Meer"},{"id":"Boathouse","cells":[[4,1],[5,1],[5,2]],"fill":"#e2d3b8","pattern":"planks","labelAt":[5,2],"name":"Botenhuis"},{"id":"Rose Garden","cells":[[1,4],[1,5],[2,5],[3,5],[4,4],[4,5],[5,3],[5,4],[5,5]],"fill":"#f3dde3","pattern":"marble","labelAt":[4,4],"name":"Rozentuin"}],"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\" stroke-width=\"1.2\"/>"},"boat":{"occupiable":true,"name":"roeiboot","icon":"<path d=\"M5 25 q18 13 36 0 l-3 -9 h-30 z\" fill=\"#8a5a34\" stroke=\"#3f2d1d\" stroke-width=\"1.4\"/><rect x=\"12\" 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stroke=\"#fff\" stroke-width=\"2\"/>"},"flowers":{"occupiable":false,"name":"bloemperk","icon":"<path d=\"M17 28 h12 l-2 12 h-8 z\" fill=\"#c9c3b8\" stroke=\"#6b6660\" stroke-width=\"1.2\"/><circle cx=\"16\" cy=\"19\" r=\"5\" fill=\"#e0526a\"/><circle cx=\"30\" cy=\"19\" r=\"5\" fill=\"#f2a53a\"/><circle cx=\"23\" cy=\"12\" r=\"5\" fill=\"#f2d24a\"/><circle cx=\"23\" cy=\"22\" r=\"4.5\" fill=\"#d94a8a\"/><path d=\"M12 25 q6 -8 11 -6\" fill=\"none\" stroke=\"#3f8a4a\" stroke-width=\"2\"/><path d=\"M34 25 q-6 -8 -11 -6\" fill=\"none\" stroke=\"#3f8a4a\" stroke-width=\"2\"/>"},"fountain":{"occupiable":false,"name":"fontein","icon":"<ellipse cx=\"23\" cy=\"33\" rx=\"18\" ry=\"8\" fill=\"#9fd3ea\" stroke=\"#4a7c95\" stroke-width=\"1.5\"/><rect x=\"19\" y=\"14\" width=\"8\" height=\"18\" fill=\"#b9b6ae\" stroke=\"#5b5852\"/><ellipse cx=\"23\" cy=\"14\" rx=\"10\" ry=\"4\" fill=\"#9fd3ea\" stroke=\"#4a7c95\"/><path d=\"M23 4 q-6 6 -4 10 M23 4 q6 6 4 10\" fill=\"none\" stroke=\"#7fb8d0\" stroke-width=\"2\"/>"},"table":{"occupiable":false,"name":"tafel","icon":"<rect x=\"7\" y=\"7\" width=\"32\" height=\"32\" rx=\"5\" fill=\"#b98a5a\" stroke=\"#6e4d2c\" stroke-width=\"1.5\"/><rect x=\"12\" y=\"12\" width=\"22\" height=\"22\" rx=\"3\" fill=\"#d1a675\"/>"},"water":{"occupiable":false,"name":"water","icon":"<rect x=\"0\" y=\"0\" width=\"46\" height=\"46\" fill=\"#3f7d9c\"/><path d=\"M-2 12 q6 -5 12 0 t12 0 t12 0 t12 0 M-2 24 q6 -5 12 0 t12 0 t12 0 t12 0 M-2 36 q6 -5 12 0 t12 0 t12 0 t12 0\" fill=\"none\" stroke=\"#2b5e79\" stroke-width=\"3.2\"/><path d=\"M-2 15 q6 -5 12 0 t12 0 t12 0 t12 0 M-2 27 q6 -5 12 0 t12 0 t12 0 t12 0 M-2 39 q6 -5 12 0 t12 0 t12 0 t12 0\" fill=\"none\" stroke=\"rgba(255,255,255,.42)\" stroke-width=\"1.5\"/>"}},"wallTypes":{},"objects":[{"cell":[1,1],"type":"chair"},{"cell":[1,2],"type":"table"},{"cell":[1,3],"type":"chair"},{"cell":[1,5],"type":"flowers"},{"cell":[2,1],"type":"flowers"},{"cell":[2,3],"type":"water"},{"cell":[2,4],"type":"boat"},{"cell":[3,2],"type":"boat"},{"cell":[3,3],"type":"water"},{"cell":[3,4],"type":"water"},{"cell":[3,5],"type":"bench"},{"cell":[4,1],"type":"chair"},{"cell":[4,2],"type":"water"},{"cell":[4,3],"type":"boat"},{"cell":[5,1],"type":"buoy"},{"cell":[5,4],"type":"fountain"}],"wallFeatures":[],"extras":[],"cellSize":46},"persons":[{"id":"A","name":"Adelaide","gender":"F","role":"visitor","color":"#c62828","avatar":{"bg":"#35607a","skin":"#f6d8c0","hair":"#7a4a2a","style":"bun","shirt":"#2f3b4c","necklace":true},"clue":"Ze was in de <b>laatste kolom</b>.","job":"een gouvernante op haar vrije middag","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Adelaide\"><rect width=\"80\" height=\"80\" fill=\"#35607a\"/><path d=\"M10 80 Q12 56 40 54 Q68 56 70 80 Z\" fill=\"#2f3b4c\"/><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=\"#f6d8c0\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#f6d8c0\"/><circle cx=\"40\" cy=\"15\" r=\"7\" fill=\"#7a4a2a\"/><path d=\"M26 32 Q26 16 40 16 Q54 16 54 32 Q50 24 40 24 Q30 24 26 32 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\"/></svg>","solverRole":"visitor","constraints":[{"type":"col","cols":[5]}]},{"id":"B","name":"Barnabas","gender":"M","role":"visitor","color":"#2e7d32","avatar":{"bg":"#1b2a33","skin":"#e4b998","hair":"#e8e4dc","style":"short","shirt":"#264653","beard":true,"cap":true},"clue":"Hij zat in een <b>roeiboot</b>.","job":"een gepensioneerde zeekapitein","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Barnabas\"><rect width=\"80\" height=\"80\" fill=\"#1b2a33\"/><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=\"#e4b998\"/><ellipse cx=\"40\" cy=\"34\" rx=\"14\" ry=\"16\" fill=\"#e4b998\"/><path d=\"M26 32 Q26 15 40 15 Q54 15 54 32 Q50 24 40 24 Q30 24 26 32 Z\" fill=\"#e8e4dc\"/><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=\"#e8e4dc\"/><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":"visitor","constraints":[{"type":"on","obj":"boat"}]},{"id":"C","name":"Clarissa","gender":"F","role":"staff","color":"#1565c0","avatar":{"bg":"#ad1457","skin":"#f3d3b5","hair":"#d9b464","style":"ponytail","shirt":"#e26d8a","headband":"#f2a53a"},"clue":"Ze was in de <b>eerste rij</b>.","job":"het bloemenmeisje bij de parkpoort","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Clarissa\"><rect width=\"80\" height=\"80\" fill=\"#ad1457\"/><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=\"#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 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=\"#f2a53a\"/></svg>","solverRole":"staff","constraints":[{"type":"row","rows":[1]}]},{"id":"D","name":"Dudley","gender":"M","role":"staff","color":"#6a1b9a","avatar":{"bg":"#3f6a3a","skin":"#e7b98f","hair":"#3a2a1c","style":"short","shirt":"#5d4037","mustache":true,"mustacheColor":"#3a2a1c","cap":true},"clue":"Hij was naast een <b>bloemperk</b>. Hij was <b>niet</b> naast de <b>tafel</b>.","job":"de botenbeheerder","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Dudley\"><rect width=\"80\" height=\"80\" fill=\"#3f6a3a\"/><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=\"#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=\"#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\"/><path d=\"M33 41 Q40 37 47 41 Q40 43 33 41 Z\" fill=\"#3a2a1c\"/><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":"flowers"},{"type":"not_beside","obj":"table"}]},{"id":"V","name":"Vyvyan","gender":"M","role":"victim","color":"#1b1b1b","avatar":{"bg":"#5a2a2a","skin":"#f1c8a5","hair":"#8a8278","style":"slick","shirt":"#1b1b1b","mustache":true,"mustacheColor":"#8a8278","tophat":"#1b1b1b"},"clue":"<b>Het slachtoffer.</b> Hij werd gevonden op het <b>Caféterras</b>, naast de <b>tafel</b> – alleen met de moordenaar.","job":"een bankier die nooit een fooi gaf","avatarSvg":"<svg viewBox=\"0 0 80 80\" xmlns=\"http://www.w3.org/2000/svg\" role=\"img\" aria-label=\"Vyvyan\"><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=\"#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=\"#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=\"M33 41 Q40 37 47 41 Q40 43 33 41 Z\" fill=\"#8a8278\"/><rect x=\"26\" y=\"0\" width=\"28\" height=\"26\" rx=\"2\" fill=\"#1b1b1b\"/><rect x=\"19\" y=\"24\" width=\"42\" height=\"6\" rx=\"3\" fill=\"#1b1b1b\" stroke=\"rgba(0,0,0,.25)\"/><rect x=\"26\" y=\"19\" width=\"28\" height=\"5\" fill=\"#c9a03a\"/><path d=\"M12 12 L68 68 M68 12 L12 68\" stroke=\"#e0362e\" stroke-width=\"5\" stroke-linecap=\"round\" opacity=\".9\"/></svg>","solverRole":"visitor","constraints":[{"type":"area","areas":["Café Terrace"]},{"type":"beside","obj":"table"}]}],"victim":"V","murderer":"D","solution":{"C":[1,4],"V":[2,2],"D":[3,1],"B":[4,3],"A":[5,5]},"walkthrough":[{"place":["D"],"cand":{"A":[[2,5],[4,5],[5,5]],"B":[[2,4],[4,3]],"C":[[1,3],[1,4]]},"text":"Dudley was naast een bloemperk, maar niet naast de tafel. De bloemperken zijn op R1C5 in de Rozentuin en op R2C1 op het Caféterras; de vakjes ernaast in hetzelfde gebied zijn R1C4, R2C5, R1C1, R2C2 en R3C1 – en R1C1 en R2C2 zijn ook naast de tafel. Dan blijven R1C4, R2C5 en R3C1 over. R1C4 ligt in de eerste rij, de enige rij die Clarissa kan hebben; R2C5 ligt in de laatste kolom, de enige kolom die Adelaide kan hebben. Dus <b>Dudley is op R3C1</b>, en niemand anders kan rij 3 of kolom 1 gebruiken."},{"place":["B"],"cand":{"A":[[5,5]],"C":[[1,4]],"V":[[2,2]]},"text":"Kijk nu naar de kolommen. Barnabas zit in een van zijn boten, op R2C4 of R4C3, en Clarissa is op R1C3 of R1C4 – samen vullen ze kolom 3 en 4. Adelaide heeft kolom 5 en Dudley kolom 1, dus kolom 2 blijft over: die moet van het slachtoffer zijn. De vrije vakjes ervan zijn R2C2 en R5C2 (R1C2 is de tafel, R4C2 is water, rij 3 is van Dudley). Op R5C2 was het slachtoffer alleen geweest in het Botenhuis – de andere twee vakjes van het botenhuis liggen in Dudleys kolom –, maar de moordenaar was bij hem. Dus het slachtoffer is in rij 2, en Barnabas kan die niet gebruiken: <b>Barnabas is in de boot op R4C3</b>."},{"place":["C","A"],"cand":{"V":[[2,2]]},"text":"Kolom 3 is nu van Barnabas, dus <b>Clarissa is op R1C4</b>. Rij 2 en 4 zijn bezet, dus <b>Adelaide is op R5C5</b>."},{"final":true,"text":"Zaak gesloten: het laatste vrije vakje, R2C2, is van het slachtoffer – op het Caféterras, naast de tafel, precies zoals zijn kaart zegt, al hadden we dat nooit nodig. Vyvyan was daar alleen met de botenbeheerder. <b>Dudley is de moordenaar!</b>"}],"solver":{"rules":[],"occupiable":["bench","boat","chair"]},"verification":{"tool":"tools/murdoku_solver.py","unique":true,"guessFree":true,"checked":"2026-09-29"}}