Here after 71.Ra7

click for larger view

Carlsen could have claimed a draw indicating he was going to play 71...Re1 (matching the position after Black moves 67 and 69 ) he also let the chance go by on move 73. (four fold rep!)

if he was wrong he would have lost on the spot, but his claim would have been valid though very sharp and alert with seconds to realise what was going on. It's not uncommon to see it missed at speed chess.

I'm sure he knows at this level with electronic boards and the video you can claim a threefold rep even though you have no personal score.

Somehow I'm reminded of this Carlsen vs E Inarkiev, 2017 though in this Ding game he cannot appeal after the fact.

Off to the land of 'if's, buts, hindsight and supposition' we go. (where I have an up to date passport.)

If Carlsen had drawn this then he had no need to take chances in game 2 with White.

Also Ding may have been shattered for allowing the three-fold rep in a won position and lost the the next game.

Then all this speculation about Carlsen being unfit, too old, has no girlfriend and bored would never have appeared. (The same claims in various forms pop up every time he has lost a game since becoming the Champ.)

OK back to the real world. Carlsen lost. Ding played the better Chess in the play-off and the 2nd game Carlsen vs Ding Liren, 2019 was quite exceptional. Bravo!

The annotations to the score here are wrong, however. They show that 3-fold was claimable at every move after 71. Ra7 Re1, which was not the case. Also it was claimable BEFORE 71... Re1.

Missed any later three-folds, did not got that far. The correct procedure would be to stop the clocks and tell arbiter I am going to play 71...Re1 creating 3 fold rep. It seems to be on here.

You are correct, spotting it with so little time would be close to unhuman.

I also think you forfeit with an incorrect claim though in some cases if it wrong you give an extra 3 minutes to your opponent, a lifetime at this level.