énigme mathématique

{"backgroundUrl":"images/game/end_screens/end_screen_3.png","characters":[{"position":{"x":20,"y":2},"url":"images/game/charactersV2/bugheight/","code":"quand('joueur arrive', fonction () {\n personnage.dit('Il faut penser différemment.');\n});\n","width":1,"height":2,"type":"character","id":0,"sourceXml":"<xml xmlns=\"http://www.w3.org/1999/xhtml\"><block type=\"gamecode_when\" id=\"Jx6+pJ6U,p|2GyhR7)(O\" x=\"322\" y=\"91\"><value name=\"EVENT\"><block type=\"event_player_arrived\" id=\"btmYP,mbgd5EoX*SCsH[\"></block></value><statement name=\"BODY\"><block type=\"get_entities_character\" id=\"KMu9#h64:P**^Wd3wu4=\"><field name=\"NAME\">personnage</field><value name=\"BODY\"><block type=\"says\" id=\"EYo8k412^6PI4+y_:q]C\"><value name=\"TEXT\"><block type=\"text\" id=\"xRHa41RpRppuCQMl*5#t\"><field name=\"TEXT\">Il faut penser différemment.</field></block></value></block></value></block></statement></block></xml>"},{"position":{"x":15,"y":2},"url":"images/game/charactersV2/bugfive/","code":"quand('joueur arrive', fonction () {\n personnage.dit('Comment faire 4 triangles équilatéraux avec 6 allumettes ?');\n});\n","width":1,"height":2,"type":"character","id":1,"sourceXml":"<xml xmlns=\"http://www.w3.org/1999/xhtml\"><block type=\"gamecode_when\" id=\"Y=PW~(uy/VAl!+p+},9;\" x=\"322\" y=\"121\"><value name=\"EVENT\"><block type=\"event_player_arrived\" id=\"Rm2E?w^7Ip,3-3aR{*`6\"></block></value><statement name=\"BODY\"><block type=\"get_entities_character\" id=\":(j[8Bx!wZdZz_ZNt}_7\"><field name=\"NAME\">personnage</field><value name=\"BODY\"><block type=\"says\" id=\"(YZ+dCA[xqE1q(1RKhYU\"><value name=\"TEXT\"><block type=\"text\" id=\"V/%W~ra[yS/sp3d4uLwY\"><field name=\"TEXT\">Comment faire 4 triangles équilatéraux avec 6 allumettes ?</field></block></value></block></value></block></statement></block></xml>"}],"tiles":[{"position":{"x":9,"y":1},"url":"images/game/blocks/wood/BOIS-AB.png","type":"wall","code":null,"traversable":false},{"position":{"x":10,"y":1},"url":"images/game/blocks/wood/BOIS-AB.png","type":"wall","code":null,"traversable":false},{"position":{"x":11,"y":1},"url":"images/game/blocks/wood/BOIS-AB.png","type":"wall","code":null,"traversable":false},{"url":"images/game/blocks/wood/BOIS-AB.png","type":"wall","position":{"x":12,"y":1},"traversable":false,"code":null},{"url":"images/game/blocks/wood/BOIS-AB.png","type":"wall","position":{"x":13,"y":1},"traversable":false,"code":null},{"url":"images/game/blocks/wood/BOIS-AB.png","type":"wall","position":{"x":8,"y":1},"traversable":false,"code":null},{"url":"images/game/blocks/wood/BOIS-AB.png","type":"wall","position":{"x":7,"y":1},"traversable":false,"code":null},{"url":"images/game/blocks/wood/BOIS-AB.png","type":"wall","position":{"x":6,"y":1},"traversable":false,"code":null},{"url":"images/game/blocks/wood/BOIS-BB.png","type":"wall","position":{"x":14,"y":1},"traversable":false,"code":null},{"url":"images/game/blocks/wood/BOIS-BB.png","type":"wall","position":{"x":15,"y":1},"traversable":false,"code":null},{"url":"images/game/blocks/wood/BOIS-BB.png","type":"wall","position":{"x":16,"y":1},"traversable":false,"code":null},{"url":"images/game/blocks/wood/BOIS-BB.png","type":"wall","position":{"x":17,"y":1},"traversable":false,"code":null},{"url":"images/game/blocks/wood/BOIS-BB.png","type":"wall","position":{"x":18,"y":1},"traversable":false,"code":null},{"url":"images/game/blocks/wood/BOIS-BB.png","type":"wall","position":{"x":20,"y":1},"traversable":false,"code":null},{"url":"images/game/blocks/wood/BOIS-BB.png","type":"wall","position":{"x":19,"y":1},"traversable":false,"code":null}],"player":{"urls":{"head":"images/game/players/elf/","body":"images/game/players/elf/","bullet":"images/game/players/elf/"},"position":{"x":10,"y":2},"type":"player","width":1,"height":2,"sourceXml":"<xml xmlns=\"http://www.w3.org/1999/xhtml\"><block type=\"when_hit\" id=\",3RqJDesd,HRzhQ60yz/\" x=\"306\" y=\"121\"><statement name=\"BODY\"><block type=\"get_entities\" id=\"yM@[G~`0JYo|fvK6-QzY\"><field name=\"NAME\">personnage</field><value name=\"BODY\"><block type=\"jump\" id=\"^DO:LZc|`uVse92mwq#~\"></block></value></block></statement></block></xml>","code":"quand('tir touche', fonction (personnage) {\n personnage.saute();\n});\n"},"endGame":{"wallpaper":"images/game/end_screens/end_screen_2.jpg","winText":"Victoire !","loseText":"Défaite :("},"sounds":{"music":"sounds/musics/feel_good","win":"sounds/win/01","loose":"sounds/loose/01","items":"sounds/bonus/01"},"soundEnable":false,"name":"Test","goal":"Finir le niveau","generalScript":"gravite = 50;","sourceXml":"<xml xmlns=\"http://www.w3.org/1999/xhtml\"><block type=\"gravity\" id=\"2WC=#bE`A%2]AA0)hb[Z\" x=\"322\" y=\"91\"><value name=\"VALUE\"><block type=\"math_number\" id=\",Q)DNQ?o,qry-f+8S/.m\"><field name=\"NUM\">50</field></block></value></block></xml>","code":"","needed":true}