Take the top 12 rated players beside the champ. Have the bottom 6 play a double round robin tournament. The top 2 finishers then play matches with the top 6 (8 total). So it would be 3 sets of matches to get your challenger.
So how would this work now?
These are the current top 12 excluding the world champ
Rank Name Title Country Rating Games B-Year
1 So, Wesley g USA 2815 11 1993
2 Kramnik, Vladimir g RUS 2811 0 1975
3 Caruana, Fabiano g USA 2802 18 1992
4 Vachier-Lagrave, Maxime g FRA 2795 7 1990
5 Aronian, Levon g ARM 2789 7 1982
6 Nakamura, Hikaru g USA 2786 11 1987
7 Anand, Viswanathan g IND 2786 0 1969
8 Giri, Anish g NED 2785 20 1994
9 Karjakin, Sergey g RUS 2783 0 1990
10 Ding, Liren g CHN 2773 14 1992
11 Mamedyarov, Shakhriyar g AZE 2772 0 198
12 Svidler, Peter g RUS 2755 10 1976
Nakamura through Svidler would play in the double round robin. The top 2 of the tournament play with the other top 6 in 3 sets of matches to wittle down to one person to play for the championship. Over 2 years there should be time to do this.
If Nakamura is #6, why would he play in the double round robin, which you said was for #7-#12?
Take the top 12 rated players beside the champ. Have the bottom 6 play a double round robin tournament. The top 2 finishers then play matches with the top 6 (8 total). So it would be 3 sets of matches to get your challenger.
So how would this work now?
These are the current top 12 excluding the world champ
Rank Name Title Country Rating Games B-Year
1 So, Wesley g USA 2815 11 1993
2 Kramnik, Vladimir g RUS 2811 0 1975
3 Caruana, Fabiano g USA 2802 18 1992
4 Vachier-Lagrave, Maxime g FRA 2795 7 1990
5 Aronian, Levon g ARM 2789 7 1982
6 Nakamura, Hikaru g USA 2786 11 1987
7 Anand, Viswanathan g IND 2786 0 1969
8 Giri, Anish g NED 2785 20 1994
9 Karjakin, Sergey g RUS 2783 0 1990
10 Ding, Liren g CHN 2773 14 1992
11 Mamedyarov, Shakhriyar g AZE 2772 0 198
12 Svidler, Peter g RUS 2755 10 1976
Nakamura through Svidler would play in the double round robin. The top 2 of the tournament play with the other top 6 in 3 sets of matches to wittle down to one person to play for the championship. Over 2 years there should be time to do this.