MESON Chess Problem Database
Sources
| SID | NAME | ORIGINALS | QUOTED |
|---|---|---|---|
| 979 | O Democrata | 3 | 0 |
| 11036 | O Diario | 2 | 0 |
| 11024 | O Estado de Sao Paulo | 8 | 0 |
| 6076 | O Football | 3 | 0 |
| 4007 | O Globo | 19 | 0 |
| 5005 | O Globo TT | 3 | 0 |
| 15836 | O Imparcial | 2 | 0 |
| 5309 | O Mosqueteiro do Rei | 0 | 56 |
| 5732 | O Pyrgos | 1 | 0 |
| 5749 | O Pyrgos TT | 1 | 0 |
| 2253 | O Xadrez | 3 | 0 |
| 1065 | OBOK | 1 | 0 |
| 6390 | OHRA Ty. | 2 | 0 |
| 17467 | ONOK | 0 | 9 |
| 1944 | OSZ | 6 | 0 |
| 1974 | OTSB | 13 | 0 |
| 4273 | OTSB Ty. | 1 | 0 |
| 14661 | OV CSTV Hodonin | 1 | 0 |
| 4730 | OZSZ Czestochowa | 2 | 0 |
| 439 | Oakhurst Home News | 10 | 0 |
| 43 | Oberfrankische Schachzeitung | 7 | 0 |
| 17226 | Oberfrankischer Schachkongress | 1 | 0 |
| 1919 | Oberfrankischer Schachverband | 2 | 0 |
| 343 | Oberfrankisches Ty. | 1 | 0 |
| 16510 | Oberlausitzer Volkszeitung | 1 | 0 |
| 6559 | Oberman-tageblatt | 1 | 0 |
| 1044 | Oberosterreichische Nachrichten | 32 | 0 |
| 9516 | Obitelj | 1 | 0 |
| 9517 | Obr. revue | 1 | 0 |
| 4032 | Obrana lidu | 1 | 0 |
| 678 | Obrazkova Revue | 24 | 0 |
| 9508 | Obzor | 2 | 0 |
| 9503 | Obzory Kutnohorska | 6 | 0 |
| 16875 | Ochotnik | 1 | 0 |
| 1230 | OchoxOcho | 7 | 0 |
| 15553 | October Revolution-50 JT (64 Shakhmatnoe Obozrenie) | 6 | 0 |
| 11004 | October Revolution-70 JT | 11 | 0 |
| 14187 | Od Kunet. hory | 2 | 0 |
| 16742 | Od Kuneticke hory | 1 | 0 |
| 12810 | Odes. novosti | 1 | 0 |
| 4174 | Odeski Novosti | 1 | 0 |
| 2058 | Odessa | 28 | 0 |
| 4702 | Odessa Chess Club | 1 | 0 |
| 17168 | Odessa Chess Club-50 JT | 1 | 0 |
| 2046 | Odessa Festival | 27 | 0 |
| 14778 | Odessa Festival TT | 2 | 0 |
| 770 | Odessa Festival-84 | 1 | 0 |
| 15334 | Odessa Liberation-60 JT | 1 | 0 |
| 4173 | Odessa Novosti | 17 | 0 |
| 4641 | Odessa Regional Chess Club | 1 | 0 |
| 5095 | Odessa Ty. | 4 | 0 |
| 3658 | Odessa-85 | 1 | 0 |
| 5370 | Odessa-90 TT | 4 | 0 |
| 5631 | Odesski Komsomolets | 1 | 0 |
| 6296 | Odessky Listok | 5 | 0 |
| 1213 | Odon MT | 1 | 0 |
| 2607 | Oesterreichische Lesehalle | 90 | 2 |
| 16941 | Offenburger Tageblatt | 1 | 0 |
| 1280 | Offiziers Schachzeitung | 31 | 3 |
| 6268 | Ohio Chess Bulletin | 3 | 0 |
| 99 | Ohquist MT | 6 | 0 |
| 15731 | Ojanen TT | 1 | 0 |
| 5487 | Ojanen-50 JT | 2 | 0 |
| 15696 | Okruzni soutez | 12 | 0 |
| 15905 | Oktjabr tany | 2 | 0 |
| 6019 | Oldham Guardian | 1 | 0 |
| 5209 | Oldham Standard | 4 | 0 |
| 3668 | Olim | 1 | 0 |
| 11429 | Olimpiai verseny | 1 | 0 |
| 5962 | Olimpiya dunyasi | 32 | 0 |
| 16948 | Olympia | 1 | 0 |
| 4295 | Olympia-Wettbewerb des Grossdeutschen Schachbundes | 1 | 0 |
| 247 | Olympic Ty. | 210 | 0 |
| 14617 | Olympic Ty. Award (1948) | 0 | 49 |
| 13099 | Omaggio a Szabados | 1 | 0 |
| 16637 | Omaha Daily Bee | 3 | 0 |
| 1722 | Omaha Daily World | 3 | 0 |
| 4379 | Omaha Solving Ty. | 1 | 0 |
| 1834 | Omaha Sunday Bee | 2 | 0 |
| 1469 | Omskaya Pravda | 29 | 0 |
| 419 | One Hundred Published Problems | 81 | 19 |
| 16558 | One Hundred and Twenty Problems | 5 | 0 |
| 2387 | Onesimus | 2 | 0 |
| 13100 | Onesimus Chess Club | 1 | 0 |
| 3056 | Onesimus TT | 2 | 0 |
| 11368 | Onkoud-25 JT | 9 | 0 |
| 16595 | Onondaga (Syracuse, New York) Tourney | 1 | 0 |
| 14960 | Ontario Advertiser | 1 | 0 |
| 204 | Op de Hoogte | 157 | 24 |
| 16421 | Op de Hoogte TT | 1 | 0 |
| 5490 | Op roek naar Harmonie | 2 | 0 |
| 14572 | Open Solving | 0 | 6 |
| 15001 | Opfer-Opfer-Matt 01. TT | 2 | 0 |
| 12407 | Oploswedstrijd N.B.v.P. | 1 | 0 |
| 10610 | Oprava Bez Uvedenia Pramena | 1 | 0 |
| 813 | Oprechte Haarlemsche Courant | 31 | 0 |
| 16255 | Opus 1000 | 1 | 0 |
| 15253 | Orebro Chess Club | 1 | 0 |
| 12328 | Orebro JT | 1 | 0 |
| 16440 | Orebro-Kuriren | 1 | 0 |
| 12801 | Oresina MT | 1 | 0 |
| 4502 | Orgaan DD | 3 | 0 |
| 16419 | Oriental Chess | 1 | 0 |
| 7632 | Original | 20 | 0 |
| 15031 | Original Chess Problems | 1 | 0 |
| 6038 | Original for 08. WCCT | 26 | 0 |
| 649 | Orillia Packet | 33 | 0 |
| 6102 | Orlimont MT | 3 | 0 |
| 2579 | Orlimont Ty. | 1 | 0 |
| 10308 | Orszag Vilag | 2 | 0 |
| 15879 | Os Sports | 7 | 0 |
| 17032 | Osada tschernovo korolya | 1 | 0 |
| 14779 | Osh-3000 JT | 2 | 0 |
| 4894 | Osh-3000 JT (A) | 7 | 0 |
| 4895 | Osh-3000 JT (B) | 1 | 0 |
| 17086 | Oslo Schackselskap | 1 | 0 |
| 8752 | Osnabrueck Neue Zeiting | 1 | 0 |
| 2815 | Osservazioni Bologna | 3 | 0 |
| 17221 | Osservazioni Teorico-Pratiche sopra il Giucco degli Scacchi | 3 | 0 |
| 4232 | Ostdeutsche Morgenpost | 29 | 0 |
| 16071 | Ostdeutsche Morgenpost TT | 1 | 0 |
| 17050 | Ostdeutscher Schachbund | 1 | 0 |
| 13155 | Ostereich. Lesehale | 9 | 0 |
| 3522 | Osterreiche Schachbund | 4 | 0 |
| 850 | Osterreichische Arbeiter Schachblatter | 2 | 0 |
| 5613 | Osterreichische Arbeiter Schachbund | 13 | 0 |
| 15647 | Osterreichische Arbeiter Shachzeitung | 7 | 0 |
| 3767 | Osterreichische Schachbund | 12 | 0 |
| 2228 | Osterreichische Schachrundschau | 21 | 0 |
| 1114 | Osterreichische Schachzeitung | 113 | 1 |
| 16310 | Osterreichische Volkszeitung | 1 | 0 |
| 440 | Osterreichische Zeitung | 1 | 0 |
| 16769 | Osterreichisches Problemturnier | 1 | 0 |
| 12284 | Ostersoturneringen | 2 | 0 |
| 15460 | Ostfunk | 1 | 0 |
| 2859 | Ostledingen | 5 | 0 |
| 15692 | Ostrada Five Day Ty. | 2 | 0 |
| 15693 | Ostrada Quick Ty. | 2 | 0 |
| 13143 | Ostrauer Morgenzeitung | 3 | 0 |
| 3807 | Ostrauer Zeitung | 1 | 0 |
| 224 | Ostravska Narodni | 1 | 0 |
| 402 | Ostravska Narodni prace | 9 | 0 |
| 5945 | Ostravska nova prace | 1 | 0 |
| 6153 | Ostravsky udernik | 5 | 0 |
| 15231 | Ostroleka EU-PL | 4 | 0 |
| 14550 | Osvobod. Dalnego Vostoka-60 | 1 | 0 |
| 17155 | Ot 4 do 10 | 1 | 0 |
| 665 | Otago Witness | 16 | 0 |
| 16068 | Otago Witness 07. TT | 1 | 0 |
| 9652 | Otavan | 10 | 0 |
| 13934 | Otavske perly | 1 | 0 |
| 538 | Ottawa Citizen | 76 | 0 |
| 548 | Ottawa Citizen (Few Piece Ty.) | 1 | 0 |
| 5545 | Ottawa Daily Citizen | 2 | 0 |
| 3896 | Otto Fuss Ty. | 32 | 0 |
| 2146 | Oud-Jong | 1 | 0 |
| 4579 | Oudot MT | 11 | 0 |
| 15206 | Our Corner | 1 | 0 |
| 3890 | Our Folder | 3 | 0 |
| 13048 | Our Young People | 11 | 0 |
| 15590 | Ovechkin-100 MT | 3 | 0 |
| 15990 | Ovechkin-105 MT | 1 | 0 |
| 15016 | Ovechkin-90 MT | 1 | 0 |
| 9644 | Ovechkin-95 | 1 | 0 |
| 15972 | Ovechkina MT | 2 | 0 |
| 1093 | Oxford | 1 | 0 |
| 15261 | Oxford Congress | 2 | 0 |
| 1094 | Oxford TT | 3 | 0 |
| 2635 | Oxford Times | 1 | 0 |
| 16439 | Oyenhausen Ty. | 1 | 0 |
| 15489 | OzProblems | 4 | 0 |
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).