Mulder was unbeaten on 367 when he declared during the lunch interval with South Africa on 626 for five.

The visitors claimed a commanding 328-run win in the first Test at the same venue on Tuesday.

Playing in his second Test, Bosch became the fourth South African to score a century and take five wickets in an innings in a Test.

Set a massive target of 537 for victory, Zimbabwe were bowled out for 208 in the afternoon session as Bosch, who finished 100 not out in the visitors' first innings, took 5-43 and debutant seamer Codi Yusuf chipped in with 3-22.