By winning game 4 of the rapid tiebreakers — after three draws — Ding Liren became the 17th undisputed world chess champion! Ian Nepomniachtchi seemed to have things under control in the deciding game, and even a bit of an advantage at times, but he overestimated his chances and allowed Ding to get a dangerous passer. Ding kept his nerves and converted his advantage brilliantly.

The intermediate 17...Nxb3+ is also possible.

This was the idea: Black just ignored White's threat to win the exchange - not the mate threat, of course . . . Thus Black repulses White's attack; he has one pawn for the exchange as well as pressure against the e4-pawn and along the c-file.

A fine central queen! Black clearly has sufficient play for the exchange and a draw was agreed on move 32 .

Here it seems that Black does not have to fear the standard sacrifice on g5 .

Most likely White had taken this move into account, but missed something further on.

15.Qh5 hxg5 16.Bxg5 Nf6 17.Qh4 Re6.

White has insufficient compensation.