By 'deadly sin' in this topic, I mean: 'an action that will cause irrational rage to a group of chess.com members'. Even without knowing anything about you, infinitum, I'm willing to bet that you have been guilty of at least one of these original 7 'sins'. Am I right?
7 Deadly Sins

Well, I'll be honest here. 99% of the times I do not start a conversation while playing a Chess game. However, if anyone does wish to talk, I don't mind replying to them.
I have played some games which are extremely lame, I do encourage my opponent and tell them to keep on playing. So I dont mind saying "You have good potential, keep on playing" So I occasionally do say Good Game.
Those are the only 'sins' I have committed :D

Infinitum wrote:
Well, I'll be honest here. 99% of the times I do not start a conversation while playing a Chess game. admits to #5
However, if anyone does wish to talk, I don't mind replying to them. admits to #4
I have played some games which are extremely lame, new, unumbered 'sin'
I do encourage my opponent and tell them to keep on playing. So I dont mind saying "You have good potential, keep on playing" #4 again So I occasionally do say Good Game. admits to #7 - possibly #6.
Those are the only 'sins' I have committed :D
Are you sure you haven't got either #1 or #2 on your conscience?
I'm not singling anyone out. The only members who have possibly not transgressed are non-playing ones.

To summarise, for the benefit of new entrants to this topic. We have identified nearly 30 'deadly sins' so far:
#1. Continuing to play after the outcome is clearly a loss for you
#2. Not continuing to play after the outcome is clearly a loss for you
#3. Allowing a lost game to end in timeout
#4. Chatting during a game
#5. Not chatting during a game
#6. Saying gg at the end of a game that wasn't a gg
#7. Saying gg ever
(ArtFizz)
#8. To many moves with one piece in the opening game.
#9. Castling too soon.
#10. Never gaining control of the center.
(OSUBUCKEYE)
#11. Accidentaly Resigning
(TiagoDevesa)
12. Fraternizing with anyone lower rated than you
13. Admitting your loss was the result of something other than poor playing conditions, a distracting/cheating opponent, or your poor health
14. Playing boring chess instead of sacrificing pieces for a speculative attack
15. Offering a draw when you could win on time by shuffling your pieces aimlessly
16. Claiming that your rating is accurate or that you are overrated
17. Enforcing the touch move rule in a tournament
18. Treating computer evaluation of a position as anything other than God given truth.
(Loomis)
#19. Turning and looking when your opponent points behind you and says, "Hey, what was that?!
(ivandh)
#20. Apparently appealing to the first base umpire before move 12 is a no-no.
(ih8sens)
#21. Asking your opponent to resign no matter what the position looks like.
(Markle)
#22. on the board: The pieces you think are covering - belong to your opponent.
#23. off the board: Asking for extra features, especially if you are a non-paying member.
(ArtFizz)
#24. Not letting your time run out when you are one move away from being mated (especially when your opponent needs to use the bathroom and thinks that you'll cheat if he does!)
#25. Not referring to outside analysis.
#26. Not doing anything to annoy the opponent, such as tapping or coughing.
#27. Obeying the rules.
(BasicLvrCH8r)
#28. Posting in the forums.
(ArtFizz)

I'll just refine the last one...
#28. Posting in the forums - especially on any of the 'dead horse' topics ('cheating', 'slow play' or 'refusing to resign' or 'not chatting'). [Thanks to Tunatin for the reminder - http://www.chess.com/forum/view/general/using-engines-and-cheating]

playing underrated players, knowing that if you win you shall gain nothing, and if you lose you shall lose everything.
playing players overrated, knowing that if you lose you shall gain nothing, and if you win then your opponent blundered :P
copying gary karsparovs games from open databases, not looking wether he won or losed.
copying Karpov vs Topalov 0 - 1 in 0 moves.
resingning one move before mate, (you think that it makes me feel good, but it makes me super furious!!!, why can't you let me mate if you dragged me 89 moves?!!!)
voting for resign in vote chess.
eating dogs.

sorry, kasparov never loses, so the sin should be: not playing just like gary kasparov all the time (onother :P)

To summarise, for the benefit of new entrants to this topic. We have identified nearly 30 'deadly sins' so far:
#1. Continuing to play after the outcome is clearly a loss for you
#2. Not continuing to play after the outcome is clearly a loss for you
#3. Allowing a lost game to end in timeout
#4. Chatting during a game
#5. Not chatting during a game
#6. Saying gg at the end of a game that wasn't a gg
#7. Saying gg ever
(ArtFizz)
#8. Too many moves with one piece in the opening game.
#9. Castling too soon.
#10. Never gaining control of the center.
(OSUBUCKEYE)
#11. Accidentaly Resigning
(TiagoDevesa)
12. Fraternizing with anyone lower rated than you
13. Admitting your loss was the result of something other than poor playing conditions, a distracting/cheating opponent, or your poor health
14. Playing boring chess instead of sacrificing pieces for a speculative attack
15. Offering a draw when you could win on time by shuffling your pieces aimlessly
16. Claiming that your rating is accurate or that you are overrated
17. Enforcing the touch move rule in a tournament
18. Treating computer evaluation of a position as anything other than God given truth.
(Loomis)
#19. Turning and looking when your opponent points behind you and says, "Hey, what was that?!
(ivandh)
#20. Apparently appealing to the first base umpire before move 12 is a no-no.
(ih8sens)
#21. Asking your opponent to resign no matter what the position looks like.
(Markle)
#22. on the board: The pieces you think are covering - belong to your opponent.
#23. off the board: Asking for extra features, especially if you are a non-paying member.
(ArtFizz)
#24. Not letting your time run out when you are one move away from being mated (especially when your opponent needs to use the bathroom and thinks that you'll cheat if he does!)
#25. Not referring to outside analysis.
#26. Not doing anything to annoy the opponent, such as tapping or coughing.
#27. Obeying the rules.
(BasicLvrCH8r)
#28. Posting in the forums - {especially on any of the 'dead horse' topics ('cheating', 'slow play' or 'refusing to resign' or 'not chatting'). [Thanks to Tunatin for the reminder -http://www.chess.com/forum/view/general/using-engines-and-cheating]}
(ArtFizz)
#29. Opponent is losing badly... and offers a draw?!
(Enormous_Gastropod)
How about offering a draw repeatedly when you are hopelessly lost and complaining in the forums when your opponent offers a draw when he or she is completely lost?

Thanks, eddiewsox.
ANTI-ELITISM |
#12. Fraternizing with anyone lower rated than you |
Loomis |
COWARDICE |
#14. Playing boring chess instead of sacrificing pieces for a speculative attack |
Loomis |
COWARDICE |
#15. Offering a draw when you could win on time by shuffling your pieces aimlessly |
Loomis |
DISTRACTION |
#04. Chatting during a game |
ArtFizz |
DISTRACTION |
#05. Not chatting during a game |
ArtFizz |
END-GAME POLICY |
#01. Continuing to play after the outcome is clearly a loss for you |
ArtFizz |
END-GAME POLICY |
#02. Not continuing to play after the outcome is clearly a loss for you |
ArtFizz |
END-GAME POLICY |
#03. Allowing a lost game to end in timeout |
ArtFizz |
END-GAME POLICY |
#37. Opponent is losing badly... and offers a draw?! |
Enormous_Gastropod |
END-GAME POLICY |
#39. offering a draw repeatedly when you are hopelessly lost |
eddiewsox |
FALLIBILITY |
#32. sorry, kasparov never loses, so the sin should be: not playing just like gary kasparov all the time |
urbiton |
FOLLY |
#31. copying gary kasparov’s games from open databases, not looking whether he won or lost. |
urbiton |
GAME PLAY |
#08. Too many moves with one piece in the opening game. |
OSUBUCKEYE |
GAME PLAY |
#09. Castling too soon. |
OSUBUCKEYE |
GAME PLAY |
#10. Never gaining control of the center. |
OSUBUCKEYE |
GREED |
#21. Asking your opponent to resign no matter what the position looks like. |
Markle |
HONEST SELF-APPRAISAL |
#13. Admitting your loss was the result of something other than poor playing conditions, a distracting/cheating opponent, or your poor health |
Loomis |
INCOMPETENCE |
#11. Accidentally Resigning |
TiagoDevesa |
INCOMPETENCE |
#22. on the board: The pieces you think are covering - belong to your opponent. |
ArtFizz |
INCOMPREHENSIBILITY |
#33. copying Karpov vs Topalov 0 - 1 in 0 moves. |
urbiton |
INDIGESTION |
#36. eating dogs. |
urbiton |
INSANE ALTRUSIM |
#29. playing underrated players, knowing that if you win you shall gain nothing, and if you lose you shall lose everything. |
urbiton |
INSANITY |
#30. playing players overrated, knowing that if you lose you shall gain nothing, and if you win then your opponent blundered :P |
urbiton |
MODESTY |
#16. Claiming that your rating is accurate or that you are overrated |
Loomis |
MUTALLY ASSURED DESTRUCTION (MAD) |
#35. voting for resign in vote chess. |
urbiton |
OVER-ZEALOUSNESS |
#34. resigning one move before mate, (you think that it makes me feel good, but it makes me super furious!!!, why can't you let me mate if you dragged me 89 moves?!!!) |
urbiton |
PEDANTRY |
#17. Enforcing the touch move rule in a tournament |
Loomis |
PEDANTRY |
#20. Apparently appealing to the first base umpire before move 12 is a no-no. |
ih8sens |
POST GAME PROTOCOL |
#06. Saying gg at the end of a game that wasn't a gg |
ArtFizz |
POST GAME PROTOCOL |
#07. Saying gg ever |
ArtFizz |
SUCKERED |
#19. Turning and looking when your opponent points behind you and says, "Hey, what was that?! |
ivandh |
TECHNOPHOBIA |
#18. Treating computer evaluation of a position as anything other than God given truth. |
Loomis |
UNADVENTUROUSNESS |
#24. Not letting your time run out when you are one move away from being mated (especially when your opponent needs to use the bathroom and thinks that you'll cheat if he does!) |
BasicLvrCH8r |
UNADVENTUROUSNESS |
#25. Not referring to outside analysis. |
BasicLvrCH8r |
UNADVENTUROUSNESS |
#26. Not doing anything to annoy the opponent, such as tapping or coughing. |
BasicLvrCH8r |
UNADVENTUROUSNESS |
#27. Obeying the rules. |
BasicLvrCH8r |
UNIMAGINITIVENESS |
#28. Posting in the forums - {especially on any of the 'dead horse' topics ('cheating', 'slow play' or 'refusing to resign' or 'not chatting'). |
ArtFizz |
UNIMAGINITIVENESS |
#38 Attempting to revive your own thread that's been dead for three months. |
Celebane |
WHINGEING (CHESS.COM) |
#23. off the board: Asking for extra features, especially if you are a non-paying member. |
ArtFizz |
WHINING |
#40. complaining in the forums when your opponent offers a draw when he or she is completely lost |
eddiewsox |

3. Not offering a trophy when you win and the game was exciting to the end and you happen to win and telling your opponents you do not see the need as they lost the game.
I agree. I ALWAYS give my opponent a trophy at the end of a game - win or lose (unless it timed out). I think it's even more important to give it to your opponent if they lost, cuz they're obviously already feeling bad about the loss, and a receiving a trophy should take a little of the sting off.
I'm reminded of the scene in 13th Warrior where the winner throws a pouch of money to the loser's kin and says, "See to your friend. He was a brave man."
Anybody who gets checkmated, should get a trophy as their consolation prize. Anyone who completes a checkmate should get a trophy as their reward.

As paul211 observed, we're getting closer to 70 deadly sins than 7.
ANTI-ELITISM |
#12. Fraternizing with anyone lower rated than you |
Loomis |
COWARDICE |
#14. Playing boring chess instead of sacrificing pieces for a speculative attack |
Loomis |
COWARDICE |
#15. Offering a draw when you could win on time by shuffling your pieces aimlessly |
Loomis |
DISTRACTION |
#04. Chatting during a game |
ArtFizz |
DISTRACTION |
#05. Not chatting during a game |
ArtFizz |
END-GAME POLICY |
#01. Continuing to play after the outcome is clearly a loss for you |
ArtFizz |
END-GAME POLICY |
#02. Not continuing to play after the outcome is clearly a loss for you |
ArtFizz |
END-GAME POLICY |
#03. Allowing a lost game to end in timeout |
ArtFizz |
END-GAME POLICY |
#37. Opponent is losing badly... and offers a draw?! |
Enormous_Gastropod |
END-GAME POLICY |
#39. Offering a draw repeatedly when you are hopelessly lost |
eddiewsox |
FALLIBILITY |
#32. sorry, Kasparov never loses, so the sin should be: not playing just like gary Kasparov all the time |
urbiton |
FOLLY |
#31. Copying Gary Kasparov’s games from open databases, not looking whether he won or lost. |
urbiton |
GAME PLAY |
#08. Too many moves with one piece in the opening game. |
OSUBUCKEYE |
GAME PLAY |
#09. Castling too soon. |
OSUBUCKEYE |
GAME PLAY |
#10. Never gaining control of the center. |
OSUBUCKEYE |
GAME PLAY |
#44. moving your queen out in the first 4 moves to protect a pawn, there must be a better way and there is. |
paul211 |
GAME PLAY |
#45. protecting your pawn with a piece of cavalry when a simple pawn move can do the same. |
paul211 |
GREED |
#21. Asking your opponent to resign no matter what the position looks like. |
Markle |
HONEST SELF-APPRAISAL |
#13. Admitting your loss was the result of something other than poor playing conditions, a distracting/cheating opponent, or your poor health |
Loomis |
INCOMPETENCE |
#11. Accidentally Resigning |
TiagoDevesa |
INCOMPETENCE |
#22. On the board: The pieces you think are covering - belong to your opponent. |
ArtFizz |
INCOMPREHENSIBILITY |
#33. Copying Karpov vs Topalov 0 - 1 in 0 moves. |
urbiton |
INDIGESTION |
#36. Eating dogs. |
urbiton |
INSANE ALTRUSIM |
#29. Playing underrated players, knowing that if you win you shall gain nothing, and if you lose you shall lose everything. |
urbiton |
INSANITY |
#30. Playing players overrated, knowing that if you lose you shall gain nothing, and if you win then your opponent blundered :P |
urbiton |
INTERFERENCE |
#42. Telling your opponent what to play, irritating if not asked for! |
paul211 |
MODESTY |
#16. Claiming that your rating is accurate or that you are overrated |
Loomis |
MUTALLY ASSURED DESTRUCTION (MAD) |
#35. Voting for resign in vote chess. |
urbiton |
OVER-ZEALOUSNESS |
#34. Resigning one move before mate, (you think that it makes me feel good, but it makes me super furious!!!, why can't you let me mate if you dragged me 89 moves?!!!) |
urbiton |
PEDANTRY |
#17. Enforcing the touch move rule in a tournament |
Loomis |
PEDANTRY |
#20. Apparently appealing to the first base umpire before move 12 is a no-no. |
ih8sens |
POST (GAME) MORTEM-ISM |
#41. Continuing to play the game OTB at home when the game is over and tell everyone that you would have won the game. |
paul211 |
POST GAME POLITENESS |
#43. not offering a trophy when you win and the game was exciting to the end and you happen to win and telling your opponents you do not see the need as they lost the game. |
paul211 |
POST GAME PROTOCOL |
#06. Saying gg at the end of a game that wasn't a gg |
ArtFizz |
POST GAME PROTOCOL |
#07. Saying gg ever |
ArtFizz |
SUCKERED |
#19. Turning and looking when your opponent points behind you and says, "Hey, what was that?! |
ivandh |
TECHNOPHOBIA |
#18. Treating computer evaluation of a position as anything other than God given truth. |
Loomis |
UNADVENTUROUSNESS |
#24. Not letting your time run out when you are one move away from being mated (especially when your opponent needs to use the bathroom and thinks that you'll cheat if he does!) |
BasicLvrCH8r |
UNADVENTUROUSNESS |
#25. Not referring to outside analysis. |
BasicLvrCH8r |
UNADVENTUROUSNESS |
#26. Not doing anything to annoy the opponent, such as tapping or coughing. |
BasicLvrCH8r |
UNADVENTUROUSNESS |
#27. Obeying the rules. |
BasicLvrCH8r |
UNIMAGINITIVENESS |
#28. Posting in the forums - {especially on any of the 'dead horse' topics ('cheating', 'slow play' or 'refusing to resign' or 'not chatting'). |
ArtFizz |
UNIMAGINITIVENESS |
#38 Attempting to revive your own thread that's been dead for three months. |
Celebane |
WHINGEING (CHESS.COM) |
#23. Off the board: Asking for extra features, especially if you are a non-paying member. |
ArtFizz |
WHINING |
#40. Complaining in the forums when your opponent offers a draw when he or she is completely lost |
eddiewsox |
ARTREF:7 DEADLY SINS

Uhmmm, shouldn't cheating be right up there at the top? Maybe you want separate entries for each cheating method.

How about telling the higher-rated opponent who's crushing you how good they are...
& for some guys......
30. Winning, if you are female....
artfizz wrote:
#1.continuing to play after the outcome is clearly a loss for you
#2.not continuing to play after the outcome is clearly a loss for you
#4.chatting during a game
#5.not chatting during a game
What's with the paradoxes? They don't make much sense when each contradicts the other statement you know. Sorry, but this thread is useless