Published <span class="entry-date"><time class="entry-date" datetime="2019-01-29T15:37:47+00:00">January 29, 2019</time></span> at <a href="https://markalowery.net/wp-content/uploads/2019/01/king_w33-29.gif">33 × 33</a> in <a href="https://markalowery.net/Chess/Checks_Checkmate/Complex_Checkmates/Problems/cckmp21.html" rel="gallery">White Mates in 3 – Problem 21</a>