To be honest, some new patches for Eremidia: An Empty Tome - Chessmaster's Challenge have been published earlier in itch.io, but I've decided to post the patches here anyway.

There are two prominent patches for Chessmaster's Challenge, both serve as updates for several things, major and minor alike.

In order to update the Chessmaster's Challenge, after downloading and extracting the main game files, please download these patches and extract them into the main game's folder in the exact order shown below.

v1.5.270419-RC3
In this version, the major change lies in the addition of character cut-ins when casting abilities in battle. Several minor updates including INT stat now actually affects spell damage, quick access to party members' skills and equipment in the main menu and some other subtle quality-of-life improvements around combat mechanics.
Link to the patch: https://rpgmaker.net/games/5252/downloads/10630/

v1.5.300419-RC3
This patch fixes minor visual things and a little adjustment on one of Witchiko's spells.
Link to the patch: https://rpgmaker.net/games/5252/downloads/10631/

That's all for now.
Cheers~