Crusade of Varna
...that the Crusade of Varna required simultaneous attacks on the Muslim Ottoman Empire by Christian Hungary and the Muslim Karamanids, which did not occur?
...that the <b id="mwAnw"><a href="./Crusade_of_Varna" id="mwAn0" rel="mw:WikiLink" title="Crusade of Varna">Crusade of Varna</a></b> required simultaneous attacks on the <a href="./Islam" id="mwAn4" rel="mw:WikiLink" title="Islam">Muslim</a> <a href="./Ottoman_Empire" id="mwAn8" rel="mw:WikiLink" title="Ottoman Empire">Ottoman Empire</a> by  <a href="./Christianity" id="mwAoA" rel="mw:WikiLink" title="Christianity">Christian</a> <a href="./Kingdom_of_Hungary" id="mwAoE" rel="mw:WikiLink" title="Kingdom of Hungary">Hungary</a> and the <a href="./Islam" id="mwAoI" rel="mw:WikiLink" title="Islam">Muslim</a> <a class="mw-redirect" href="./Karamanoğlu" id="mwAoM" rel="mw:WikiLink" title="Karamanoğlu">Karamanids</a>, which did not occur?