[{"data":1,"prerenderedAt":345},["ShallowReactive",2],{"project-39072079":3},{"id":4,"name":5,"line":6,"line_source":7,"title":8,"url":9,"domain":10,"maker":11,"posted_at":12,"year":13,"points":14,"comments":15,"rank_in_year":16,"shown_in_year":17,"top":18,"tier":19,"category":20,"subcategory":21,"format":22,"keywords":23,"reception":27,"sentiment":28,"stance_mix":29,"scored_comments":34,"aspects":35,"strip":41,"post_text":43,"what":44,"said":66,"maker_in_thread":195,"shape":204,"grid":208,"attempts":302,"same_week":307,"maker_shows":30,"maker_hidden":337,"reader_version":338,"card":339},"39072079","Checkmate Champ","a training tool for chess tactics","title","Show HN: Checkmate Champ – a training tool for chess tactics","https:\u002F\u002Fwww.checkmatechamp.net\u002F","checkmatechamp.net","Tommah",1705783319,2024,192,39,415,3515,12,"notable","learning_science","chess training","web_app",[24,25,21,26],"chess tactics","checkmate puzzles","mate in one","mixed",-0.367,{"positive":30,"neutral":31,"mixed":32,"critical":33},1,7,3,10,21,{"design":36,"idea":39},{"positive":37,"critical":38},0,6,{"positive":37,"critical":40},4,[32,37,32,37,37,30,37,37,30,32,30,37,37,32,32,37,42,32,32,37,30,30,30,30,37,32,30,32,30,32,37,37,37,37,37,37,37,37,30],5,null,{"problem":45,"audience":51,"pricing":43,"motivation":43,"time_to_build":43,"stack":62,"openness":63,"stage":64,"team_size":65},{"value":46,"source":47,"evidence":48},"Practising checkmate and chess tactics puzzles","inferred",[49],{"id":50},"post",{"value":52,"source":47,"evidence":53},"Chess players improving their tactics",[54,58],{"id":55,"by":56,"text":57},"39072885","gurchik","> Positions marked \"1001\" are taken from Fred Reinfeld's 1955 book 1001 Ways to Checkmate. How did you enter these positions into the app? Manually? One idea you can try to avoid…",{"id":59,"by":60,"text":61},"39076421","dmurray","Even doing it randomly, I found the content is extremely heavy on \"play the most forcing move, ideally sacrificing the strongest piece possible with check\". It took me 10+…",[],"unknown","launched","solo",{"praise":67,"objections":80,"requests":124,"questions":147,"alternatives":166},[68],{"value":69,"source":70,"evidence":71},"Fun to play and curated puzzles are good","commenter",[72,76],{"id":73,"by":74,"text":75},"39072846","tibanne","This is quite fun. I tried the first 5 where you seems to just sac your queen in each. Maybe adding variation in the types of mates could make it more engaging?",{"id":77,"by":78,"text":79},"39074437","nomilk","Great tool! I like that the solution puts you in the eyes of the defender (so you can see all variations of the solution). I didn't really like how the board gets reversed though.",[81,100,108,119],{"value":82,"source":70,"evidence":83},"Drag and drop is confusing and misplaces pieces in some browsers",[84,88,92,96],{"id":85,"by":86,"text":87},"39074051","colund","Other chess apps have the mouse approximately in the center of the piece so that when you drop the piece it's dropped where the piece and the mouse is located. I've accidentally…",{"id":89,"by":90,"text":91},"39075488","cobrabyte","Yeah, strange behavior in Firefox on Mac.",{"id":93,"by":94,"text":95},"39077944","matsemann","Firefox on windows as well. As soon as I try to drag it, the piece gets much larger and moves left and up from where the mouse is.",{"id":97,"by":98,"text":99},"39072939","jurassicfoxy","I love curated checkmate training, and I would disagree with the other posters. I would in fact recommend you don't make the training \"random\", but keep them in line with the…",{"value":101,"source":70,"evidence":102},"Random puzzle order is less useful than progression",[103,107],{"id":104,"by":105,"text":106},"39074792","sram1337","Is the goal to give players an engaging experience, or guide them through specific chess material? I had a similar experience to the person above - after a few puzzles where the…",{"id":73,"by":74,"text":75},{"value":109,"source":70,"evidence":110},"Solution mode is unclear and hard to exit",[111,115],{"id":112,"by":113,"text":114},"39074767","lifthrasiir","One thing I observed during my format analysis was that the solution mode was not very intuitive. It is not clear that the \"Reset position\" would restart the animation (which…",{"id":116,"by":117,"text":118},"39075341","elygre","I would also like to be able to revert from solution mode to problem mode, and didn’t find a good way to do that.",{"value":120,"source":70,"evidence":121},"Puzzles repeat the same forcing queen sacrifice theme",[122,123],{"id":59,"by":60,"text":61},{"id":73,"by":74,"text":75},[125,129,133,140],{"value":126,"source":70,"evidence":127},"Allow illegal moves to do nothing and clearer drag or click-to-place",[128],{"id":97,"by":98,"text":99},{"value":130,"source":70,"evidence":131},"Show chapter or theme context",[132],{"id":104,"by":105,"text":106},{"value":134,"source":70,"evidence":135},"Bigger board on mobile",[136],{"id":137,"by":138,"text":139},"39074561","bluGill","Can the chessboard be bigger on mobile? My old eyes need to zoom in and then the other buttons dissapear",{"value":141,"source":70,"evidence":142},"Clearer button labels instead of arrows",[143],{"id":144,"by":145,"text":146},"39074522","Vvector","Instead of using \"\u003C\u003C\" and \">>\" buttons, with instructions and popups explaining these mean next puzzle and previous puzzle, just make that the label on the buttons.",[148,152,159],{"value":149,"source":70,"evidence":150},"How were positions entered and could games be mined automatically",[151],{"id":55,"by":56,"text":57},{"value":153,"source":70,"evidence":154},"Is the book out of copyright",[155,156],{"id":97,"by":98,"text":99},{"id":157,"by":11,"text":158},"39073059","If you don't want to drag, you can click the piece and then click the target square. > Is this book out of copyright now? I think so. The copyright term back then was 28 years,…",{"value":160,"source":70,"evidence":161},"Why use this over chess.com puzzles",[162],{"id":163,"by":164,"text":165},"39083813","wly_cdgr","Why would I use this over the puzzles on chesscom, where the UI is much better, where the puzzles are integrated with social features, where there are many more puzzles and you…",[167,179,187],{"value":168,"source":70,"evidence":169},"Chess Tempo",[170,174,178],{"id":171,"by":172,"text":173},"39073452","SubiculumCode","The best app for chess problems I've used is 'Chess Tempo' Really large set of curated problems, which can be divided into particular problem types (e.g. attaction or desperado…",{"id":175,"by":176,"text":177},"39073761","gokhan","For tactics training, one can also check https:\u002F\u002Fchesstempo.com\u002Fchess-tactics\u002F",{"id":59,"by":60,"text":61},{"value":180,"source":70,"evidence":181},"Lichess puzzles",[182,186],{"id":183,"by":184,"text":185},"39076165","ryanjshaw","Isn't that what Lichess already does, plus estimate difficulty based on which bot Elo is required to solve the position? (The OP's site doesn't have difficulty estimates but it's…",{"id":59,"by":60,"text":61},{"value":188,"source":70,"evidence":189},"Chess.com puzzles",[190,191],{"id":163,"by":164,"text":165},{"id":192,"by":193,"text":194},"39077250","bmacho","Meh. There are a TON of good puzzles there, this one is not good, the UI is sluggish. I see the mate, then I should enter it as fast as I can, and not in 6 seconds or so.",{"comments":42,"answered":32,"key":196},[197,198,201],{"id":157,"text":158},{"id":199,"text":200},"39074524","Which browser and OS are you using? I notice that behavior in Firefox on Mac, but not in Chrome on Mac. When I tested years ago in Chrome and Firefox on Linux, that definitely…",{"id":202,"text":203},"39072991","I started my board game site back in 2010 as a set of CGI scripts that sent the games to people in HTML emails. Then I turned it into a proper website, then I got it running as a…",{"commenters":205,"max_depth":40,"maker_replies":42,"first_comment_mins":206,"lifespan_hours":207},31,77,29,[209,211,213,215,217,221,224,226,228,229,232,234,236,238,240,243,244,247,249,252,255,256,257,258,259,261,263,264,267,271,275,279,283,286,289,292,294,297,300],[97,37,32,210,98,37],"project\u002Fmixed\u002Fdesign",[157,37,37,212,11,30],"maker\u002Fneutral\u002Fnone",[55,30,32,214,56,37],"project\u002Fneutral\u002Fidea",[183,30,37,216,184,37],"commenter\u002Fneutral\u002Fidea",[218,30,37,219,220,37],"39077406","commenter\u002Fneutral\u002Fnone","kuboble",[85,222,30,223,86,37],2,"project\u002Fcritical\u002Fdesign",[199,222,37,225,11,30],"maker\u002Fneutral\u002Fdesign",[89,222,37,227,90,37],"commenter\u002Fneutral\u002Fdesign",[93,222,30,223,94,37],[230,32,32,214,231,37],"39073083","Euphorbium",[175,40,30,233,176,37],"project\u002Fcritical\u002Fidea",[171,42,37,235,172,37],"other\u002Fneutral\u002Fnone",[237,42,37,235,172,37],"39073490",[144,38,32,239,145,37],"project\u002Fneutral\u002Fdesign",[241,31,32,225,242,37],"39072898","AlchemistCamp",[202,31,37,212,11,30],[245,31,42,246,242,37],"39074224","maker\u002Fpositive\u002Fnone",[77,248,32,210,78,37],8,[73,250,32,251,74,37],9,"project\u002Fmixed\u002Fidea",[253,250,37,254,11,30],"39072946","maker\u002Fneutral\u002Fidea",[104,250,30,233,105,37],[59,250,30,233,60,37],[112,33,30,223,113,37],[116,33,30,223,117,37],[260,33,37,225,11,30],"39075865",[137,262,32,239,138,37],11,[163,18,30,233,164,37],[265,18,32,266,164,37],"39085256","project\u002Fneutral\u002Fnone",[268,269,30,223,270,37],"39078291",13,"0x4164",[272,273,32,266,274,37],"39075868",14,"nurettin",[276,277,37,235,278,37],"39073437",15,"29athrowaway",[280,281,37,235,282,37],"39073238",16,"snissn",[284,281,37,235,285,37],"39074657","psynister",[287,281,37,235,288,37],"39075129","dhon_",[290,281,37,235,291,37],"39076176","abjr",[293,281,37,235,285,37],"39081161",[295,281,37,235,296,37],"39074867","heythere22",[298,281,37,235,299,37],"39078174","RockofStrength",[192,301,30,223,193,37],17,[303,306],{"id":304,"t":305,"points":32,"comments":30},"19487331",1553552912,{"id":4,"t":12,"points":14,"comments":15},[308,313,317,322,327,332],{"id":309,"name":310,"points":311,"category":312},"39120647","funding simulator",654,"finance_crypto",{"id":314,"name":315,"points":316,"category":20},"39113879","teachyourselfmath",384,{"id":318,"name":319,"points":320,"category":321},"39113972","nlm-ingestor",293,"data",{"id":323,"name":324,"points":325,"category":326},"39067496","Coffeehouse",229,"consumer_social",{"id":328,"name":329,"points":330,"category":331},"39105502","Retriever",193,"security_privacy",{"id":333,"name":334,"points":335,"category":336},"39099980","Kener",187,"infrastructure",false,"v2",{"id":340,"name":5,"line":6,"ai":337,"cat":20,"year":13,"points":14,"comments":15,"rec":27,"s":341,"top":18,"kw":342,"maker":11,"domain":10,"tier":19,"attempts":222,"strip":343,"url":9,"mix":344,"praise":69,"objection":82,"sub":21},39072079,-0.37,[24,25,21,26],"303001001310033053301111031313000000001",[30,31,32,33],1794036648487]