From: ianfab <ianfab@users.noreply.github.com>
Date: Sat, 20 Oct 2018 12:53:06 +0000 (+0200)
Subject: Cap king danger for all variants
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=6ea5772d3014c3cb32912edff5e8c8b05365164c;p=fairystockfish.git

Cap king danger for all variants

Stabilize evaluation by limiting king danger.

3check STC
LLR: -2.95 (-2.94,2.94) [0.00,10.00]
Total: 12796 W: 5948 L: 5860 D: 988
http://35.161.250.236:6543/tests/view/5b7fa10c6e23db0fbab0dcc7

3check LTC
LLR: 0.04 (-2.94,2.94) [0.00,10.00]
Total: 10691 W: 4990 L: 4836 D: 865
http://35.161.250.236:6543/tests/view/5bc2d7a36e23db7639060bf5

crazyhouse STC
LLR: -2.96 (-2.94,2.94) [0.00,10.00]
Total: 7666 W: 3772 L: 3763 D: 131
http://35.161.250.236:6543/tests/view/5b7f1ad66e23db0fbab0dcbc

crazyhouse LTC
LLR: -2.95 (-2.94,2.94) [0.00,10.00]
Total: 6868 W: 3341 L: 3342 D: 185
http://35.161.250.236:6543/tests/view/5baf76c46e23db0fbab0ddec

chess STC
ELO: 4.17 +-10.1 (95%) LOS: 79.0%
Total: 2000 W: 454 L: 430 D: 1116
http://35.161.250.236:6543/tests/view/5b7fa0d96e23db0fbab0dcc5

chess LTC
ELO: 1.91 +-9.5 (95%) LOS: 65.3%
Total: 2000 W: 398 L: 387 D: 1215
http://35.161.250.236:6543/tests/view/5bbdbcff6e23db7639060be0

shogi
ELO: 25.23 +-32.2 (95%) LOS: 93.9%
Total: 400 W: 192 L: 163 D: 45

euroshogi
ELO: 13.90 +-31.6 (95%) LOS: 80.6%
Total: 400 W: 180 L: 164 D: 56

minishogi
ELO: 24.36 +-27.6 (95%) LOS: 95.9%
Total: 400 W: 145 L: 117 D: 138

bench: 5141418
---

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 6995e38..e985b8a 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -502,7 +502,7 @@ namespace {
         {
             int mobilityDanger = mg_value(mobility[Them] - mobility[Us]);
             kingDanger = std::max(0, kingDanger + mobilityDanger);
-            score -= make_score(kingDanger * kingDanger / 4096, kingDanger / 16);
+            score -= make_score(std::min(kingDanger * kingDanger / 4096, 3000), kingDanger / 16);
         }
     }