[{"data":1,"prerenderedAt":137},["ShallowReactive",2],{"bot-zClfJ":3},{"id":4,"aboutLong":5,"age":6,"botId":7,"country":8,"countryCode":9,"dataHash":10,"dateModified":11,"elo":12,"extension":13,"faq":14,"favoriteQuote":24,"gender":25,"hello":26,"introduction":27,"isTrophy":28,"liveDate":29,"luckyCharm":30,"meta":31,"name":32,"occupation":33,"openingAxes":34,"openingsAnalysis":37,"playstyle":86,"playstyleSummary":90,"ratingHistory":91,"shortName":97,"similar":98,"stem":133,"trophyQuirk":134,"trophyUnlock":134,"whoShouldPlay":135,"__hash__":136},"bots/bots/zClfJ.json","Petter Jonatansson is a 42-year-old AI chess game maker from Sweden whose professional life revolves around building the very engines that power digital play. His occupation has placed him at the intersection of code and the 64 squares for years, and that constant proximity to top engines and grandmaster databases has sharpened his own play to an estimated 2835 ELO, squarely in international master to grandmaster territory. Petter calculates long forcing lines accurately, recognises typical middlegame structures on sight, and converts small advantages with technical precision. His repertoire leans toward offbeat but reliable systems rather than the deepest mainline theory, reflecting the practical preferences of a working engine builder. Opponents can expect aggressive intent from move one, with Petter actively avoiding early trades and steering the position toward heavy, complicated middlegames where tactical depth matters far more than memorised lines.","42","zClfJ","Sweden","se","e0d36f1ea77a6cd98aa9c675c737a47345f5c736fcfa972223854b9b131e1c27","2026-07-06",2835,"json",[15,18,21],{"question":16,"answer":17},"What rating is Petter?","Petter has an estimated ELO of 2835, placing him at international master to grandmaster strength. At this level he calculates long forcing lines accurately and draws on deep theoretical knowledge across all phases of the game.",{"question":19,"answer":20},"What opening does Petter play?","Petter has no fixed repertoire on file, but his choices lean toward offbeat, lesser-explored systems rather than deep mainline theory. Whichever opening appears, he steers play toward complicated middlegames with maximum piece tension.",{"question":22,"answer":23},"Can master-level players beat Petter?","Yes, strong masters and titled players can win games against Petter, though it will rarely be easy. At 2835 ELO he is roughly the strength of a solid grandmaster, so even FIDE masters and IMs should expect a hard fight and frequent losses. Beating him reliably typically requires GM-level preparation and accurate defence in sharp, unsimplified positions.","Unleashing the power of pixels, I embark on a digital quest for chess supremacy.","Male","Greetings human… ready to compile your moves against my **code warriors** 💻 Did you know every position is just a state in an infinite decision tree… shall we run the simulation and see whether your strategy survives my recursive depth search","Expertly crafts intricate AI algorithms that inject vitality into virtual chess battles. A grandmaster in the tech universe.",false,"2024-02-12T00:00:00.000Z","A Vintage Pocket Watch",{},"Petter Jonatansson","AI Chess Game Maker",{"solid_sharp":35,"unprepared_theoretical":36},-0.22,-0.46,{"stats":38,"whiteFingerprint":51,"blackFingerprint":61},{"total":39,"white":44,"black":48},{"games":40,"uniqueOpenings":41,"sharpness":35,"repertoireNarrowness":42,"theoryAdherence":43},1992,137,-0.77,-0.15,{"games":45,"uniqueOpenings":41,"sharpness":46,"repertoireNarrowness":42,"theoryAdherence":47},997,0,0.12,{"games":46,"uniqueOpenings":46,"sharpness":49,"repertoireNarrowness":46,"theoryAdherence":50},-0.45,-0.43,{"firstMove":52},[53],{"name":54,"percent":55,"count":56,"lines":57,"responses":60},"English Opening",85.2,870,[58],[59],"c4",[],{"vsFirstMove":62},[63,75],{"name":64,"lines":65,"responses":67},"e4",[66],[64],[68],{"name":69,"percent":70,"count":71,"lines":72},"French",99.6,496,[73],[64,74],"e6",{"name":76,"lines":77,"responses":79},"d4",[78],[76],[80],{"name":81,"percent":82,"count":83,"lines":84},"1...e6 systems",100,229,[85],[76,74],{"defensive_aggressive":87,"simplifying_complicating":88,"category":89},0.91,-0.94,4,"Petter plays with strong aggressive intent and almost never simplifies, keeping pieces and tension on the board for as long as possible. His opening choices skew toward offbeat, lesser-explored systems rather than mainline theory, and his lines tend to be slightly more solid than sharp, relying on positional pressure that boils over into attacks. Expect dense, piece-heavy middlegames where every exchange is contested.",[92,95],{"rating":93,"msSinceEpoch":94},2821,1778093200348,{"rating":93,"msSinceEpoch":96},1778450107540,"Petter",{"sameStyle":99,"different":118},[100,106,112],{"botId":101,"name":102,"elo":103,"country":104,"countryCode":105,"category":89},"mfWDW","Bianck Castlinga",2856,"Latvia","lv",{"botId":107,"name":108,"elo":109,"country":110,"countryCode":111,"category":89},"lbUqX","Flora Fossil",2812,"United States","us",{"botId":113,"name":114,"elo":115,"country":116,"countryCode":117,"category":89},"tavar","Joaquim Tavares",2789,"Portugal","pt",[119,126],{"botId":120,"name":121,"elo":122,"country":123,"countryCode":124,"category":125},"aigne","Andreas Aigner",2837,"Austria","at",5,{"botId":127,"name":128,"elo":129,"country":130,"countryCode":131,"category":132},"gEsOt","Nia Asante",2832,"Ghana","gh",3,"bots/zClfJ",null,"Petter suits players rated roughly 2100 and above who want a serious stress test from an IM-to-GM level opponent. Club players, national masters, and aspiring titled players will gain the most, particularly those who struggle against aggressive opponents that refuse to trade pieces. Anyone wanting to practice defending dense, complicated middlegames, or to test offbeat opening preparation against accurate calculation, will find the matchup highly instructive.","B1KIbhc288QXxqRTVG0tUJVLEYgY7oHD-cr2_znAXXY",1784583551217]