Caissa v1.1.0 (Portable Version)

Caissa 1.1.0

Fixed

• Closing the app now actually closes it. In 1.0.0, clicking the ✕ button
  hid the window but left an invisible Caissa.exe running in the background,
  and these piled up every time you reopened the app. Closing the window now
  fully ends the process, including the bundled engine.

New

• Clear error on unsupported CPUs. The bundled engine needs AVX2
  (Intel CPUs from around 2013, AMD from around 2015). On a machine without
  it, 1.0.0 just showed no moves with no explanation. Caissa now checks at
  startup and tells you exactly what's wrong and how to work around it:
  download a non-AVX2 Stockfish (the x86-64 build) from stockfishchess.org
  and select it under Settings → Custom engine.

Faster and stronger

• The engine starts thinking about 200 ms sooner after every move on the
  board.
• The engine's hash table now sizes itself to your RAM (up to 1 GB, was fixed
  at 256 MB), so the work it does while your opponent is thinking carries
  over into your move. Same thinking time, deeper search.
• Removed the search depth cap that made the engine stop early in simple
  positions. It now always uses your full thinking-time budget, which
  noticeably strengthens endgame play.

Settings from 1.0.0 are picked up and upgraded automatically.

---

Downloads: grab Caissa.exe below and double-click it. Nothing to
install. The portable zip is the same app plus a portable.txt marker: run it
from a USB stick and all settings stay beside the exe instead of on the host
machine.

Caissa v1.1.0 (Windows Release)

Caissa 1.1.0

Fixed

• Closing the app now actually closes it. In 1.0.0, clicking the ✕ button
  hid the window but left an invisible Caissa.exe running in the background,
  and these piled up every time you reopened the app. Closing the window now
  fully ends the process, including the bundled engine.

New

• Clear error on unsupported CPUs. The bundled engine needs AVX2
  (Intel CPUs from around 2013, AMD from around 2015). On a machine without
  it, 1.0.0 just showed no moves with no explanation. Caissa now checks at
  startup and tells you exactly what's wrong and how to work around it:
  download a non-AVX2 Stockfish (the x86-64 build) from stockfishchess.org
  and select it under Settings → Custom engine.

Faster and stronger

• The engine starts thinking about 200 ms sooner after every move on the
  board.
• The engine's hash table now sizes itself to your RAM (up to 1 GB, was fixed
  at 256 MB), so the work it does while your opponent is thinking carries
  over into your move. Same thinking time, deeper search.
• Removed the search depth cap that made the engine stop early in simple
  positions. It now always uses your full thinking-time budget, which
  noticeably strengthens endgame play.

Settings from 1.0.0 are picked up and upgraded automatically.

---

Downloads: grab Caissa.exe below and double-click it. Nothing to
install. The portable zip is the same app plus a portable.txt marker: run it
from a USB stick and all settings stay beside the exe instead of on the host
machine.

Caissa v1.0.0 (Windows Release)

Pre-compiled, single-file Windows executable desktop overlay. Download the executable below, run it, and point the application settings to your local Stockfish engine binary.