next release

Makefile

@@ -1,8 +1,8 @@
-# Build executables for Carp releases. Base rule is reserved for OpenBench
 EXE   := Pluto_1.0.1
 LXE   := Pluto_1.0.1
 _THIS := $(realpath $(dir $(abspath $(lastword $(MAKEFILE_LIST)))))
 TMPDIR := $(_THIS)/tmp
+HCE   := true
 
 ifeq ($(OS),Windows_NT)
 	EXT := .exe
@@ -16,45 +16,16 @@ else
 	VER := linux
 endif
 
+ifeq ($(HCE),true)
+	FEATURES := tuning,log,classical
+else
+	FEATURES := tuning,log
+endif
+
 NAME := $(EXE)$(EXT)
 
 rule:
-	cargo rustc -r -p engine --bins -- -C target-cpu=native --emit link=$(NAME)
+	cargo rustc -r -p engine --bins --features $(FEATURES) -- -C target-cpu=native --emit link=$(NAME)
 
 tmp-dir:
 	mkdir -p $(TMPDIR)
-
-x86-64 x86-64-v2 x86-64-v3 x86-64-v4 native: tmp-dir
-	cargo rustc -r -p engine --bins -- -C target-cpu=$@ -C profile-generate=$(TMPDIR) --emit link=$(LXE)-$(VER)-$@$(EXT)
-	./$(LXE)-$(VER)-$@$(EXT) bench 16
-	llvm-profdata merge -o $(TMPDIR)/merged.profdata $(TMPDIR)
-
-	cargo rustc -r -p engine --bins -- -C target-feature=+crt-static -C target-cpu=$@ -C profile-use=$(TMPDIR)/merged.profdata --emit link=$(LXE)-$(VER)-$@$(EXT)
-
-	rm -rf $(TMPDIR)/*
-	rm -f *.pdb
-
-syzygy: tmp-dir
-	cargo rustc -r -p engine --bins --features syzygy -- -C target-cpu=native -C profile-generate=$(TMPDIR) --emit link=$(LXE)-$(VER)$(EXT)
-	./$(LXE)-$(VER)$(EXT) bench 16
-	llvm-profdata merge -o $(TMPDIR)/merged.profdata $(TMPDIR)
-
-	cargo rustc -r -p engine --bins --features syzygy -- -C target-feature=+crt-static -C target-cpu=native -C profile-use=$(TMPDIR)/merged.profdata --emit link=$(LXE)-$(VER)$(EXT)
-
-	rm -rf $(TMPDIR)/*
-	rm -f *.pdb
-
-datagen: tmp-dir
-	cargo rustc -r -p tools -- -C target-cpu=native -C profile-generate=$(TMPDIR) --emit link=datagen$(EXT)
-	./datagen$(EXT) datagen -g 256 -t 32 -n 5000
-	./datagen$(EXT) datagen -g 256 -t 32 -d 8
-	llvm-profdata merge -o $(TMPDIR)/merged.profdata $(TMPDIR)
-
-	cargo rustc -r -p tools -- -C target-cpu=native -C profile-use=$(TMPDIR)/merged.profdata --emit link=datagen$(EXT)
-
-	rm -rf $(TMPDIR)
-	rm -rf $(_THIS)/data
-	rm -f *.pdb
-
-release: x86-64 x86-64-v2 x86-64-v3 x86-64-v4
-	rm -rf $(TMPDIR)

README.md

@@ -1,7 +1,15 @@
 
 # Pluto Chess Engine
-
-by [Lxdovic](https://github.com/Lxdovic)
+<div align="center">
+  <picture>
+   <source media="(prefers-color-scheme: dark)" srcset="https://github.com/user-attachments/assets/26b61936-4bdd-40c6-a189-da45de028821">
+   <img width="600" alt="Shows an illustrated sun in light color mode and a moon with stars in dark color mode." src="https://github.com/user-attachments/assets/50e5b2e0-4d13-48ca-bb30-53bcfeb64fab">
+  </picture>
+
+  [![License][license-badge]][license-link]
+  [![Release][release-badge]][release-link]
+  [![Commits][commits-badge]][commits-link]
+</div>
 
 ## Table of Contents
 
@@ -19,9 +27,9 @@ by [Lxdovic](https://github.com/Lxdovic)
 
 ## Strength
 
-| Version        | Date        | Estimated ELO | CCRL |
-| -------------- | ----------- | ------------- | ---- |
-| 1.0.0          | 11 May 2025 | 2870          | 2872 |
+| Version        | Date        | Estimated ELO | CCRL 40/15 | CCRL Blitz 2+1 |
+| -------------- | ----------- | ------------- | ---- | ---- |
+| 1.0.0          | 11 May 2025 | 2870          | 2879 | 2976 |
 
 ## Testing
 
@@ -54,15 +62,27 @@ Pluto is tested with OpenBench, a distributed testing framework for UCI chess en
     - **Killer Moves**
     - **Transposition Tables**
 - Evaluation:
-    Pluto adopted Efficiently Updatable Neural Networks for its evaluation function quite early in development. Earlier versions were using Simple Eval/Pesto Eval
+    - **HCE** (classical build, see how to build it in #Building)
     - **NNUE (768->512)x2->1** Trained using [Bullet](https://github.com/jw1912/bullet) and Stockfish data.
 
 ## Building
 
-To build the engine, clone the repository and run the following command in your terminal:
+To build the engine, clone the repository and use one of the following options:
+
+### NNUE
+
+This will build Pluto NNUE
 
 ```bash
-make
+cargo build --release --bin engine 
+```
+
+### Classical
+
+This allows you to build Pluto HCE
+
+```bash
+cargo build --release --bin engine --features classical
 ```
 
 ## Contributors
@@ -81,3 +101,10 @@ Pluto was built using these resources and tools
 - [Bullet](https://github.com/jw1912/bullet) -> great tool for building NNUEs
 - [Stockfish](https://stockfishchess.org/) -> some implementation examples and ideas
 
+[license-badge]: https://img.shields.io/github/license/Lxdovic/Pluto?style=for-the-badge
+[release-badge]: https://img.shields.io/github/v/release/Lxdovic/Pluto?style=for-the-badge
+[commits-badge]: https://img.shields.io/github/commits-since/Lxdovic/Pluto/latest?style=for-the-badge
+
+[license-link]: https://github.com/Lxdovic/Pluto/blob/main/LICENSE
+[release-link]: https://github.com/Lxdovic/Pluto/releases/latest
+[commits-link]: https://github.com/Lxdovic/Pluto/commits/dev

engine/Cargo.toml

@@ -15,6 +15,12 @@ path = "src/lib.rs"
 name = "engine"
 path = "src/main.rs"
 
+[features]
+default = []
+tuning = []
+classical = []
+log = []
+
 [dependencies]
 queues = "1.1.0"
 shakmaty = "0.27.2"
@@ -26,3 +32,5 @@ chrono = "0.4.40"
 web-sys = { version = "0.3.77", features = [
     'Worker',
 ] }
+log = "0.4"
+simplelog = "0.12"

engine/src/build.rs

@@ -0,0 +1,14 @@
+fn main() {
+    if std::env::var("CARGO_FEATURE_TUNING").is_ok() {
+        println!("cargo:rustc-cfg=feature=\"tuning\"");
+    }
+
+    // pluto classical means no use of NNUE, HCE is used instead
+    if std::env::var("CARGO_FEATURE_CLASSICAL").is_ok() {
+        println!("cargo:rustc-cfg=feature=\"classical\"");
+    }
+
+    if std::env::var("CARGO_FEATURE_CLASSICAL").is_ok() {
+        println!("cargo:rustc-cfg=feature=\"log\"");
+    }
+}