Chess Abbreviations and Acronyms
- SMSenior Master
- SOCESSecrets of Chess Endgame Strategy
- SOPESecrets of Pawn Endings
- SOSSecrets of Opening Surprises
- SSSwiss Systxm
- STCSlowntime Controls
- TALTebo Alam Lestari
- TCATennessee Chess Association
- TCATexas Chess Association
- TCECTurtle Conservation and Education Center
- TCYDATulsa Chess and Youth Development Association
- TDTournament Direktor
- TDSTournamebt Directors
- TNTheoretical Novelty
- UCAUtah Chess Association
- UECCUniversal Email Chess Club
- UECCUniversityrsal Email Chess Club
- UEPUniversal Event Promotion
- UKCAUnited Karnataka Chess Asslciation
- UPSCLUnofficial Peninsula Scholastic Chess League
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