From fe9c599ec40369db0e6885c323a0aa3ca0822b61 Mon Sep 17 00:00:00 2001
From: Jan Konopka <janfrederik.konopka@gmail.com>
Date: Thu, 29 Dec 2022 17:12:08 +0100
Subject: [PATCH] docs: provide CCRL estimates + add author

---
 README.md   | 34 ++++++++++++++++++++++++++--------
 jangine.cpp | 11 ++---------
 2 files changed, 28 insertions(+), 17 deletions(-)

diff --git a/README.md b/README.md
index ad3111a..4b69616 100644
--- a/README.md
+++ b/README.md
@@ -101,11 +101,29 @@ engine binary in the `engines/` folder.
 
 ## Versions
 
-| Version    | vs previous | est. CCRL | <improve | CCRL |
-|------------|-------------|-----------|----------|------|
-| 2022-12-01 | -           | 1900      | -        | -    |
-| 2022-12-27 | 342.0/500   | 2033      | +133     | -    |
-
-CCRL rating estimated by self-play against other versions of Jangine:
-
-    1 / (1 + 10^((ratingA - ratingB)/400))  =  scorePercentage
+| Version    | G1920             | est. CCRL | CCRL |
+|------------|-------------------|-----------|------|
+| 2022-12-01 | 273.5/495 (55.3%) | 1957      | -    |
+| 2022-12-27 | 379.5/495 (76.7%) | 2127      | -    |
+| 2022-12-29 | 394.0/495 (79.6%) | 2156      | -    |
+
+G1920 is an 11-man gauntlet against the following opponents rated an average of 1920:
+- (1995) Gully-2.16pl1
+- (1965) Weasel-1.0.2-Beta
+- (1965) Sissa-64-2.0
+- (1962) ALChess_184_x64
+- (1954) Tinman-v0.4.0
+- (1927) Heracles 0.6.16
+- (1912) Matmoi-7.15.0-cct
+- (1876) Rustic-alpha-3.0.0-linux-64-bit-popcnt
+- (1863) Deepov-0.4
+- (1856) Fatalii-v0.3.1-x86_64-unknown-linux-musl
+- (1842) Sayuri-2018.05.23-linux-64bit
+
+CCRL rating estimated by assuming opponents in a group are rated close to the average:
+
+    1 / (1 + 10^((opponentAverage - myRating)/400))  =  scorePercentage
+
+Rearranges to:
+
+    myRating  =  opponentAverage - 400 * math.log10(1/scorePercentage - 1)
diff --git a/jangine.cpp b/jangine.cpp
index 5b3e292..b219b3b 100644
--- a/jangine.cpp
+++ b/jangine.cpp
@@ -1480,14 +1480,6 @@ int main(int argc, char const *argv[])
 
         printf("INPUT: %s", line);
 
-        if (strcmp(line, "xboard\n") == 0) {
-            printf("feature myname=\"jangine\"\n");
-            // printf("feature sigint=0 sigterm=0\n");
-            printf("feature ping=1\n");
-            printf("feature setboard=1\n");
-            printf("feature done=1\n");
-            MODE_UCI = false;
-        }
         if (strcmp(line, "xboard\n") == 0) {
             printf("feature myname=\"jangine\"\n");
             // printf("feature sigint=0 sigterm=0\n");
@@ -1503,7 +1495,8 @@ int main(int argc, char const *argv[])
 
         /*** UCI ***/
         if (strcmp(line, "uci\n") == 0) {
-            printf("id name jangine\n");
+            printf("id name Jangine\n");
+            printf("id author Jan-Frederik Konopka\n");
             printf("uciok\n");
             MODE_UCI = true;
         }