Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Novotny (chess):

"

The key is 1.b4, threatening 2.Bxb1 and 3.Ra3#. Black has six thematic defences, each of which White meets with a Novotny on move two:

  • 1...Bb6 threatens 2...Ba5, interfering with the path of the white rook to a3. White counters with a Novotny interference: 2.Rd5. This interferes with the black rook on h5 and the bishop on a8, and so threatens 3.Nb5# and 3.Ne4#. Black can prevent one by capturing on d5, but not both, because the capturing piece interferes with the other (so 2...Rxd5 3.Ne4#; or 2...Bxd5 3.Nb5#).
  • 1...Rbxb5 threatens 2...Ra5 stopping the threat. White can now play 2.Qd5 with the same interferences and threats as follow 1...Bb6.