Chessify is a multi-service chess platform. Since I am not registered with I cannot say much about it. But a single feature of their phone app is really amazing: it allows to take photos of chess diagrams (printed or screen) and converts them into FEN (Forsyth-Edwards-Notation). This is a standard for machine readable description of chess positions. PGN employs it to record games which do not start from the standard beginning position. And you can directly past it into ChessBase and many other chess apps. This is pretty helpful in these times where chess training is restricted to online meetings.
![Converting chess diagrams to machine readable FEN with Chessify 1 Converting chess diagrams to machine readable FEN with Chessify 1](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/chessify_ingram-braun.net_2020-04-30_00-53-26_316221-1024x608.jpg)
I made a series of tests with diagrams from books out of my private library. Roughly spoken it is very reliable with books from the 1980s and later. The only fail I experienced there is a book dealing with chess programnming having very low resolved diagrams (presumably for matrix printers or shells).
Prior to that date most tests failed. Main reason is a bishop with a kind of pompom hat that confuses the app. The test series in chronological order:
![Converting chess diagrams to machine readable FEN with Chessify 2 Converting chess diagrams to machine readable FEN with Chessify 2](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/dufresne1882_ingram-braun.net_2020-04-29_15-14-26_030912-904x1024.jpg)
![Converting chess diagrams to machine readable FEN with Chessify 3 Converting chess diagrams to machine readable FEN with Chessify 3](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/1588172381357_ingram-braun.net_2020-04-29_15-11-50_767964.jpg)
FAIL
Jean Dufresne, Sammlung leichterer Schachaufgaben 2.
Leipzig: Reclam n. d. [ca. 1882].
![Converting chess diagrams to machine readable FEN with Chessify 4 Converting chess diagrams to machine readable FEN with Chessify 4](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/portius-1889_ingram-braun.net_2020-04-29_12-08-25_362759.jpg)
![Converting chess diagrams to machine readable FEN with Chessify 5 Converting chess diagrams to machine readable FEN with Chessify 5](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/1588154000858_ingram-braun.net_2020-04-29_13-44-40_379941.jpg)
FAIL
Karl J. S. Portius, Katechismus der Schachspielkunst. Leipzig: J. J. Weber 101889.
![Converting chess diagrams to machine readable FEN with Chessify 6 Converting chess diagrams to machine readable FEN with Chessify 6](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/spielmann1935_ingram-braun.net_2020-04-29_20-21-52_851404-928x1024.jpg)
![Converting chess diagrams to machine readable FEN with Chessify 7 Converting chess diagrams to machine readable FEN with Chessify 7](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/1588175652905_ingram-braun.net_2020-04-29_20-23-28_238245.jpg)
FAIL
Rudolf Spielmann, Richtig opfern! Voraussetzungen, Ziel und Durchführung des Opfers im Schachspiel. Leipzig: Hedwig n. d. [ca. 1935] [Reprint Düsseldorf: Schachverlag Manfred
Mädler ²1985].
![Converting chess diagrams to machine readable FEN with Chessify 8 Converting chess diagrams to machine readable FEN with Chessify 8](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/richter1941_ingram-braun.net_2020-04-29_21-48-38_228908.jpg)
![Converting chess diagrams to machine readable FEN with Chessify 9 Converting chess diagrams to machine readable FEN with Chessify 9](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/1588196464866_ingram-braun.net_2020-04-29_21-48-58_327459.jpg)
FAIL
Kurt Richter, Der Weg zum Matt. Ein Blick in die Schachtechnik
[Sonderdruck für das Oberkommando der Wehrmacht Abteilung Inland]. Berlin: Walter de Gruyter & Co. 1941.
![Converting chess diagrams to machine readable FEN with Chessify 10 Converting chess diagrams to machine readable FEN with Chessify 10](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/schach-welt-1947_ingram-braun.net_2020-04-29_14-00-57_163672.jpg)
![Converting chess diagrams to machine readable FEN with Chessify 11 Converting chess diagrams to machine readable FEN with Chessify 11](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/1588156373936_ingram-braun.net_2020-04-29_14-36-21_786399.jpg)
FAIL
Schach-Welt 2, 1947.
![Converting chess diagrams to machine readable FEN with Chessify 12 Converting chess diagrams to machine readable FEN with Chessify 12](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/brinckmann1955_ingram-braun.net_2020-04-29_21-19-35_766306.jpg)
![Converting chess diagrams to machine readable FEN with Chessify 13 Converting chess diagrams to machine readable FEN with Chessify 13](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/1588194736920_ingram-braun.net_2020-04-29_21-18-01_961959.jpg)
OK
Alfred Brinckmann, Matt in 20 Zügen. Einfälle und Reinfälle.
Berlin: Walter de Gruyter 1955.
![Converting chess diagrams to machine readable FEN with Chessify 14 Converting chess diagrams to machine readable FEN with Chessify 14](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/teschner1970_ingram-braun.net_2020-04-29_21-37-55_579881.jpg)
![Converting chess diagrams to machine readable FEN with Chessify 15 Converting chess diagrams to machine readable FEN with Chessify 15](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/1588195368484_ingram-braun.net_2020-04-29_21-33-01_640518.jpg)
FAIL
Rudolf Teschner, Schach für Fortgeschrittene. Wiesbaden:
Falken-Verlag 1970.
![Converting chess diagrams to machine readable FEN with Chessify 16 Converting chess diagrams to machine readable FEN with Chessify 16](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/fine1981_ingram-braun.net_2020-04-29_22-49-12_819574.jpg)
![Converting chess diagrams to machine readable FEN with Chessify 17 Converting chess diagrams to machine readable FEN with Chessify 17](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/1588200064118_ingram-braun.net_2020-04-29_22-47-58_578636.jpg)
OK
Reuben Fine, Die größten Schachpartien der Welt. Von Morphy
bis Fischer und Karpov. München: Wilhelm Heyne Verlag ²1981.
![Converting chess diagrams to machine readable FEN with Chessify 18 Converting chess diagrams to machine readable FEN with Chessify 18](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/lindoerfer1982_ingram-braun.net_2020-04-29_22-36-10_165329.jpg)
![Converting chess diagrams to machine readable FEN with Chessify 19 Converting chess diagrams to machine readable FEN with Chessify 19](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/1588199242800_ingram-braun.net_2020-04-29_22-36-50_802116.jpg)
OK
Klaus Lindörfer, Großes Schachlexikon. Geschichte, Theorie
und Praxis von A bis Z. München: Mosaik Verlag 1982.
![Converting chess diagrams to machine readable FEN with Chessify 20 Converting chess diagrams to machine readable FEN with Chessify 20](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/lindoerfer-oj_ingram-braun.net_2020-04-29_22-08-43_811174.jpg)
![Converting chess diagrams to machine readable FEN with Chessify 21 Converting chess diagrams to machine readable FEN with Chessify 21](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/1588197093433_ingram-braun.net_2020-04-29_22-09-30_126855.jpg)
OK
Klaus Lindörfer, Schach. Gütersloh: Bertelsmann Club n. d. [ca. 1982].
![Converting chess diagrams to machine readable FEN with Chessify 22 Converting chess diagrams to machine readable FEN with Chessify 22](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/gelenczei1983_ingram-braun.net_2020-04-29_20-52-39_675231.jpg)
![Converting chess diagrams to machine readable FEN with Chessify 23 Converting chess diagrams to machine readable FEN with Chessify 23](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/1588192924138_ingram-braun.net_2020-04-29_20-53-08_450342.jpg)
OK
Emil Gelenczei, 200 Eröffnungsfallen. Berlin: Sportverlag 1983.
![Converting chess diagrams to machine readable FEN with Chessify 24 Converting chess diagrams to machine readable FEN with Chessify 24](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/kraas1985_ingram-braun.net_2020-04-29_20-38-50_456893.jpg)
![Converting chess diagrams to machine readable FEN with Chessify 25 Converting chess diagrams to machine readable FEN with Chessify 25](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/1588192054341_ingram-braun.net_2020-04-29_20-39-11_571124.jpg)
FAIL
Rainer Bartel/Hans-Joachim Kraas/Günther Schrüfer,
Das große Computerschachbuch. Düsseldorf: Data Becker 1985.
![Converting chess diagrams to machine readable FEN with Chessify 26 Converting chess diagrams to machine readable FEN with Chessify 26](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/bouwmeester1986_ingram-braun.net_2020-04-29_15-27-49_197346.jpg)
![Converting chess diagrams to machine readable FEN with Chessify 27 Converting chess diagrams to machine readable FEN with Chessify 27](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/1588173513666_ingram-braun.net_2020-04-29_15-28-14_954982.jpg)
OK
Hans Bouwmeester, Schachtraining mit den Großmeistern.
Niedernhausen/Ts.: Falken-Verlag 1986.
![Converting chess diagrams to machine readable FEN with Chessify 28 Converting chess diagrams to machine readable FEN with Chessify 28](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/huebner1990_ingram-braun.net_2020-04-29_22-20-58_583940.jpg)
![Converting chess diagrams to machine readable FEN with Chessify 29 Converting chess diagrams to machine readable FEN with Chessify 29](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/1588198389041_ingram-braun.net_2020-04-29_22-22-33_849727.jpg)
OK
Robert Hübner, Fünfundfünfzig feiste Fehler, begangen und
besprochen von Robert Hübner. Schach 1. Stamesried: Vögel 1990.
![Converting chess diagrams to machine readable FEN with Chessify 30 Converting chess diagrams to machine readable FEN with Chessify 30](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/collins2006_ingram-braun.net_2020-04-29_15-49-25_079054.jpg)
![Converting chess diagrams to machine readable FEN with Chessify 31 Converting chess diagrams to machine readable FEN with Chessify 31](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/1588174550885_ingram-braun.net_2020-04-29_15-49-54_671649.jpg)
OK
Sam Collins, The French Advance. London: Gloucester Publishers plc 2006.
![Converting chess diagrams to machine readable FEN with Chessify 32 Converting chess diagrams to machine readable FEN with Chessify 32](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/lossa-schmid2018_ingram-braun.net_2020-04-29_21-01-17_487266.jpg)
![Converting chess diagrams to machine readable FEN with Chessify 33 Converting chess diagrams to machine readable FEN with Chessify 33](https://ib-clone.ingram-braun.net/erga/wp-content/uploads/2020/04/1588193786923_ingram-braun.net_2020-04-29_21-02-07_762229.jpg)
OK
Günter Lossa/Bernhard Schmid, “Das Haar muss ziehen!”
150 Jahre Schachclub 1968 Bamberg. Bamberg: Karl-May-Verlag n. d. [ca. 2018].
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