Hmm, are you sure a 3-country sequence of Latvia-Lithuania-Russia is possible? By my reckoning, downtown London to downtown Sydney (lets assume it's a seaplane flying from River Thames to Sydney Harbor) would be what you say, minus the 2nd Lithuania. But flying Heathrow Airport to Sydney International Airport you miss Lithuania completely (it now contains the sequence DK-LAT-RUS). And leaving from Gatwick Airport, the sequence changes again, this time missing out Denmark (now containing the sequence GER-LIT-LAT-RUS) :) Maybe do a 3-column 3-option quiz version to accommodate all three ?!
Thanks for spotting the mistake! I did an error while copying the country names. There's actually 2-3 minor Latvia-Lithuania crossings so I've put a note saying they are not to be considered.
The route I used is the one daftlogic (thanks again for letting me know about this website!) gives if you just type London and then Sydney
The route I used is the one daftlogic (thanks again for letting me know about this website!) gives if you just type London and then Sydney