Found the comment
"Kokoriko is an advanced Gungi technique developed by Komugi that centers around isolating the King (as in the Gungi piece, not the Chimera Ant), separating it from the other pieces and killing it off. Just like Netero and the Hunters were planning to do to Meruem. However, Komugi unexpectedly develops a counter to this technique in the middle of a game, meaning that the King piece (representing Meruem) no longer has to die (since he unexpectedly survived the nuke). Then, later on, when Komugi uses Kokoriko again, she actually develops a counter to the counter ("she reversed my reversal???"), representing that the King piece (Meruem) apparently actually does have to die after all (because of the Rose's poison). However, immediately after beating Meruem using Kokoriko (symbolizing his imminent death), Komugi and Meruem start one final game together, a game that they never finish. 1-5-1 Black King -> 9-5-1 White Lieutenant General, I believe, or something to that extent. Immediately afterwards, they die together, leaving on the board Meruem's one black piece and Komugi's single white piece, together in Gungi forever. This represents that the two were always united through Gungi, and will continue to be together even after death, undisturbed and united for all eternity. Meruem places his piece down, symbolizing his death, and then Komugi responds by placing her piece down next to his, showing that she is perfectly willing to die at his side.. The black screen/black panels in the manga show that the Rose's poison has made Meruem go blind. That's why he has to keep asking Komugi if she's still there, because he can't see her anymore. This is ironic because his name means "the light that illuminates/shines upon all". He even got some godlike light-related photon-based powers before his death, allowing him to fulfill his name. In addition, as they are playing in the bunker before their deaths, Meruem sees a blinding light radiating from Komugi as she "reverses his reversal", making her "the light that illuminates even the all-powerful light". Despite being far weaker (and blind to boot), her light shined far brighter than his. Then, as he dies, Komugi holds him and feels his head, allowing her to finally "see" or know what his face is like. Thus, as they die, Meruem joins Komugi in blindness as she joins him in death. Meruem can finally see what Komugi has been seeing all along, and knows what it feels like to be blind like her, and Komugi finally knows his face, allowing each to understand the other more as they fade away (the OST used during their death scene is called "Understanding"). Touching, isn't it? Togashi is a mastermind, and this entire story, especially this arc, is a masterpiece, a beautiful work of art, a canvas depicting love, hatred, innocence, corruption, happiness, suffering, loyalty, betrayal, anger, sadness, life, death, malevolence, destruction, resolve, determination, avarice, sacrifice, "true" power, truth, and understanding."
@CarltonJunior