Match Play 4-4 to 7. How should Red play 21?
A banana split is definitely required or else White will have an easy run home. The question is how big a play to make?
Over the board I chose 6/5, 6/4* but that play is not big enough. Any entering number by White is likely to be good enough.
Red has to play for a closeout and the best way to do that is 13/11, 5/4*. If White fans once Red will reasonable chance of winning the game and perhaps even a gammon. Even with that play Red only wins a third of the time and a high percentage of his losses will be gammon whatever he does so he may as well go for broke.
Any play other than 13/11, 5/4* an error and my play was very nearly a blunder.