Hello,
ideachess now has more than 37.000 tactics puzzles all gathered from real games.
Here are the number of problems from GM's games:
568 Alekhine
352 Anand
139 Botvinnik
109 Capablanca
236 Carlsen
235 Euwe
242 Fischer
392 Ivanchuk
538 Karpov
430 Kasparov
685 Korchnoi
346 Kosteniuk
145 Kotov
274 Kramnik
391 Lasker
105 Nimzowitsch
217 Petrosian
149 Reti
152 Rubinstein
206 Seirawan
456 Shirov
372 Short
309 Smyslov
284 Spassky
223 Steinitz
432 Tal
Best wishes, Zuril