As I recall, Liszt himself said that he could barely reach a tenth, and that the myths about his hand size were highly exaggerated.
Speaking of Liszt...I just found out that:Here we go:My communication teacher's husband who plays for the CPO as a 1st section violinist, performed with a concert pianist way back in the 80's. And this particular pianist was going to perform Beethoven PC number 5, but in the program, it said PC # 3. This was during the dress rehearsal.Right just when the conductor raised his baton, the pianist said, "whoa whoa ...are we doing the PC #5?"The condcutor said,"um no the program did say PC #3... "After that, the pianist has a blank look, and said, "okay", and performed the PC #3 straight cold and did an amazing job, even though he didn't rehearse for that specifc piece.Now here's the real kicker. It turns out that the pianist's teacher was actually once one of the last students of the great Liszt! Now how about that?!?! So three "generations" if you will:Liszt --> Teacher of Pianist --> Pianist.