From 57d9b2c4f08948bd5a5fc4a01a0b62d4c80523e2 Mon Sep 17 00:00:00 2001
From: Benjamin Auder <benjamin.auder@somewhere>
Date: Tue, 24 Mar 2020 19:27:47 +0100
Subject: [PATCH] Some fixes

---
 client/public/images/pieces/Ball/bc.svg       | 78 +++++++--------
 client/public/images/pieces/Ball/bd.svg       | 77 +++++++--------
 client/public/images/pieces/Ball/bh.svg       | 35 ++++---
 client/public/images/pieces/Ball/wc.svg       | 93 +++---------------
 client/public/images/pieces/Ball/wd.svg       | 94 +++++++++++++++----
 client/public/images/pieces/Ball/wh.svg       |  9 +-
 client/src/base_rules.js                      |  2 +-
 client/src/components/BaseGame.vue            |  2 +-
 client/src/components/ComputerGame.vue        |  3 +-
 client/src/translations/rules/Coregal/en.pug  |  9 +-
 client/src/translations/rules/Coregal/es.pug  | 10 +-
 client/src/translations/rules/Coregal/fr.pug  | 16 +++-
 .../src/translations/rules/Enpassant/en.pug   | 21 ++++-
 .../src/translations/rules/Enpassant/es.pug   | 27 ++++--
 .../src/translations/rules/Enpassant/fr.pug   | 27 ++++--
 client/src/variants/Arena.js                  |  3 +
 client/src/variants/Checkered.js              | 36 +++----
 client/src/variants/Extinction.js             |  2 -
 client/src/variants/Losers.js                 |  4 +-
 19 files changed, 293 insertions(+), 255 deletions(-)

diff --git a/client/public/images/pieces/Ball/bc.svg b/client/public/images/pieces/Ball/bc.svg
index 03c42738..6dbea895 100644
--- a/client/public/images/pieces/Ball/bc.svg
+++ b/client/public/images/pieces/Ball/bc.svg
@@ -11,11 +11,11 @@
    width="100%"
    version="1.1"
    viewBox="0 0 2048 2048"
-   id="svg16"
-   sodipodi:docname="bc.svg"
+   id="svg112"
+   sodipodi:docname="bh.svg"
    inkscape:version="0.92.4 5da689c313, 2019-01-14">
   <metadata
-     id="metadata22">
+     id="metadata118">
     <rdf:RDF>
       <cc:Work
          rdf:about="">
@@ -27,7 +27,7 @@
     </rdf:RDF>
   </metadata>
   <defs
-     id="defs20" />
+     id="defs116" />
   <sodipodi:namedview
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      bordercolor="#666666"
@@ -37,58 +37,62 @@
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      inkscape:pageopacity="0"
      inkscape:pageshadow="2"
-     inkscape:window-width="1920"
+     inkscape:window-width="960"
      inkscape:window-height="1060"
-     id="namedview18"
+     id="namedview114"
      showgrid="false"
      inkscape:zoom="0.11523438"
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+     inkscape:cx="1024"
      inkscape:cy="1024"
      inkscape:window-x="0"
      inkscape:window-y="20"
      inkscape:window-maximized="0"
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diff --git a/client/public/images/pieces/Ball/bd.svg b/client/public/images/pieces/Ball/bd.svg
index 8c5339cc..03c42738 100644
--- a/client/public/images/pieces/Ball/bd.svg
+++ b/client/public/images/pieces/Ball/bd.svg
@@ -11,11 +11,11 @@
    width="100%"
    version="1.1"
    viewBox="0 0 2048 2048"
-   id="svg18"
-   sodipodi:docname="bd.svg"
+   id="svg16"
+   sodipodi:docname="bc.svg"
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+     id="metadata22">
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+     id="defs20" />
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+     d="m 722.74458,280.6393 c 16.40726,109.4115 63.67577,182.6701 199.96743,309.9175 83.23649,77.713 104.10369,102.5993 129.91119,154.9325 38.7086,78.4943 53.3173,152.8139 42.3597,215.499 -7.3451,42.0189 -5.7974,51.4946 16.2498,99.4901 29.0323,63.2018 43.8935,142.6732 32.3551,173.0216 -6.0672,15.9577 -14.4923,21.2525 -33.8168,21.2525 -32.2052,0 -37.9061,-9.2458 -39.6909,-64.3713 -0.7855,-24.2568 -9.4727,-62.1541 -19.3051,-84.2163 C 1018.2276,1033.1343 978.35888,999.2764 852.82037,938.0551 701.93084,864.4709 624.80219,794.9675 554.20941,668.9661 506.59176,583.973 490.93259,567.6979 473.52368,585.1069 c -6.93497,6.9349 -1.83237,24.7258 18.68537,65.149 31.8715,62.792 32.79204,95.3592 2.8157,99.6156 -14.60744,2.0742 -23.42111,-4.3334 -34.71186,-25.2359 -8.32328,-15.4087 -25.37742,-39.895 -37.8981,-54.4138 -56.20367,-65.1735 -161.78391,-2.1435 -176.57684,105.4139 -8.3618,60.7976 10.55309,105.8294 105.67285,251.5819 102.82608,157.5609 123.8202,201.2119 124.04174,257.9078 0.18267,46.7461 30.82423,124.2095 62.51052,158.0299 l 17.97199,19.1823 16.79537,-21.3518 c 18.20256,-23.1408 40.68698,-27.4413 57.18992,-10.9383 15.47223,15.4722 13.27433,27.9693 -19.34645,110.002 -27.52833,69.2265 -54.37982,180.1677 -45.706,188.8416 5.77615,5.7761 128.94222,-79.1139 155.9892,-107.5128 l 24.11642,-25.3219 -35.49115,-16.0043 c -44.41077,-20.0264 -55.43387,-38.5441 -37.87079,-63.6189 16.49659,-23.5522 27.89964,-23.4312 78.03159,0.8278 l 40.34981,19.5254 13.0086,-19.5254 c 8.43604,-12.6622 21.72941,-19.5254 37.81868,-19.5254 20.06687,0 25.767,4.5624 29.81528,23.8644 17.49782,83.4285 25.29925,106.2769 48.89022,143.1864 14.49044,22.6712 29.64551,41.2204 33.67793,41.2204 13.11696,0 52.47762,-58.6544 69.59962,-103.716 9.1944,-24.1976 16.717,-62.6981 16.717,-85.5568 0,-47.5478 10.6948,-62.3882 44.9601,-62.3882 29.3042,0 37.8281,24.2325 30.4467,86.5564 -5.6719,47.891 -10.5631,47.0403 89.4746,15.561 145.9368,-45.9226 280.8633,-145.6645 363.2466,-268.5231 69.6749,-103.9064 133.4153,-263.4264 166.6274,-417.0104 20.2898,-93.8263 32.0005,-386.0828 21.5662,-538.2111 l -6.3985,-93.2881 H 1233.0542 716.56493 Z m -364.96444,484.428 c 7.50025,7.5002 13.63681,20.4873 13.63681,28.8602 0,8.3729 9.94031,24.5618 22.08958,35.9755 24.88653,23.3797 25.9875,57.3133 2.33977,72.1159 -31.07515,19.4519 -86.83428,-35.2232 -99.25463,-97.3249 -9.16803,-45.8402 29.76275,-71.0525 61.18847,-39.6267 z m 236.46459,439.7869 c 12.64983,15.6164 23.03712,18.9992 51.88393,16.8968 29.40919,-2.1434 38.62092,1.0166 49.8983,17.1173 7.60686,10.8603 13.83067,32.8953 13.83067,48.9665 0,19.4332 6.25147,34.2826 18.66417,44.3338 22.50576,18.2241 16.93304,57.2265 -9.36938,65.5746 -55.67266,17.6698 -191.53208,-102.0486 -191.53208,-168.7768 0,-44.2527 38.9045,-58.3327 66.62439,-24.1122 z"
+     id="path14"
+     inkscape:connector-curvature="0" />
 </svg>
diff --git a/client/src/base_rules.js b/client/src/base_rules.js
index 6da3212f..e1428399 100644
--- a/client/src/base_rules.js
+++ b/client/src/base_rules.js
@@ -226,7 +226,7 @@ export const ChessRules = class ChessRules {
     if (
       Math.abs(s.x - e.x) == 2 &&
       s.y == e.y &&
-      move.appear[0].p == V.PAWN
+      (move.appear.length > 0 && move.appear[0].p == V.PAWN)
     ) {
       return {
         x: (s.x + e.x) / 2,
diff --git a/client/src/components/BaseGame.vue b/client/src/components/BaseGame.vue
index 4a451f4f..d9540eb3 100644
--- a/client/src/components/BaseGame.vue
+++ b/client/src/components/BaseGame.vue
@@ -387,7 +387,7 @@ export default {
       };
       const playMove = () => {
         const animate = (
-          V.ShowMoves == "all" &&
+          ["all", "highlight"].includes(V.ShowMoves) &&
           (this.autoplay || !!received)
         );
         if (!Array.isArray(move)) move = [move];
diff --git a/client/src/components/ComputerGame.vue b/client/src/components/ComputerGame.vue
index 5fe29e6f..ccf3a133 100644
--- a/client/src/components/ComputerGame.vue
+++ b/client/src/components/ComputerGame.vue
@@ -65,8 +65,7 @@ export default {
         if (this.gameInfo.mode == "versus")
           CompgameStorage.add(game);
       }
-      if (this.gameInfo.mode == "versus" && !game.mycolor)
-        game.mycolor = (Math.random() < 0.5 ? "w" : "b");
+      if (!game.mycolor) game.mycolor = (Math.random() < 0.5 ? "w" : "b");
       this.compWorker.postMessage(["init", game.fen]);
       this.vr = new V(game.fen);
       game.players = [{ name: "Myself" }, { name: "Computer" }];
diff --git a/client/src/translations/rules/Coregal/en.pug b/client/src/translations/rules/Coregal/en.pug
index e9eb1ed8..f7252254 100644
--- a/client/src/translations/rules/Coregal/en.pug
+++ b/client/src/translations/rules/Coregal/en.pug
@@ -11,11 +11,13 @@ ul
 
 p.
   Since the king remains royal, this allows a new way to win: check both
-  royal pieces at the same time, like on the following diagram.
+  royal pieces at the same time, like on the following diagrams.
 
 figure.diagram-container
-  .diagram
+  .diagram.diag12
     | fen:4Q3/4K3/8/8/3N4/5k2/2q5/8:
+  .diagram.diag22
+    | fen:n2rb1r1/1Qn2p2/5qp1/3p4/P1P2PNp/BP2k2P/R3P1P1/1K4RB:
   figcaption Both black king and queen are in check: white wins.
 
 h3 Special moves
@@ -42,7 +44,8 @@ p.
 h3 Source
 
 p
-  a(href="https://www.chessvariants.com/winning.dir/coregal.html") Coregal Chess
+  a(href="https://www.chessvariants.com/winning.dir/coregal.html")
+    | Coregal Chess
   | &nbsp;on chessvariants.com.
   | This variant can be played too 
   a(href="https://greenchess.net/rules.php?v=coregal") on greenchess.net
diff --git a/client/src/translations/rules/Coregal/es.pug b/client/src/translations/rules/Coregal/es.pug
index f7484e8a..d332f972 100644
--- a/client/src/translations/rules/Coregal/es.pug
+++ b/client/src/translations/rules/Coregal/es.pug
@@ -12,11 +12,14 @@ ul
 
 p.
   Como el rey sigue siendo real, esto agrega una nueva forma de ganar:
-  jaque las dos piezas reales al mismo tiempo, como en el siguiente diagrama.
+  jaque las dos piezas reales al mismo tiempo,
+  como en los siguientes diagramas.
 
 figure.diagram-container
-  .diagram
+  .diagram.diag12
     | fen:4Q3/4K3/8/8/3N4/5k2/2q5/8:
+  .diagram.diag22
+    | fen:n2rb1r1/1Qn2p2/5qp1/3p4/P1P2PNp/BP2k2P/R3P1P1/1K4RB:
   figcaption Las blancas ganan porque el rey y la dama negra están en jaque.
 
 h3 Movimientos especiales
@@ -44,7 +47,8 @@ h3 Fuente
 
 p
   | La 
-  a(href="https://www.chessvariants.com/winning.dir/coregal.html") cariante Coregal
+  a(href="https://www.chessvariants.com/winning.dir/coregal.html")
+    | variante Coregal
   | &nbsp;en chessvariants.com.
   | Esta variante también es jugable
   a(href="https://greenchess.net/rules.php?v=coregal") en greenchess.net
diff --git a/client/src/translations/rules/Coregal/fr.pug b/client/src/translations/rules/Coregal/fr.pug
index 47247f15..f91bf534 100644
--- a/client/src/translations/rules/Coregal/fr.pug
+++ b/client/src/translations/rules/Coregal/fr.pug
@@ -1,7 +1,10 @@
 p.boxed
-  | On peut gagner en matant la dame. Une dame ne peut aller ou rester en échec.
+  | On peut gagner en matant la dame.
+  | Une dame ne peut aller ou rester en échec.
 
-p Tout comme le roi, la dame peut être mise en échec et matée. C'est-à-dire que
+p.
+  Tout comme le roi, la dame peut être mise en échec et matée.
+  C'est-à-dire que
 ul
   li Un coup qui laisserait l'adversaire capturer la dame est interdit.
   li.
@@ -12,11 +15,13 @@ ul
 p.
   Puisque le roi reste royal, ceci ajoute une nouvelle manière de gagner :
   mettre en échc les deux pièces royales en même temps,
-  comme sur le diagramme suivant.
+  comme sur les diagrammes suivants.
 
 figure.diagram-container
-  .diagram
+  .diagram.diag12
     | fen:4Q3/4K3/8/8/3N4/5k2/2q5/8:
+  .diagram.diag22
+    | fen:n2rb1r1/1Qn2p2/5qp1/3p4/P1P2PNp/BP2k2P/R3P1P1/1K4RB:
   figcaption Les blancs gagnent car le roi et la dame noir sont en échec.
 
 h3 Coups spéciaux
@@ -44,7 +49,8 @@ h3 Source
 
 p
   | La 
-  a(href="https://www.chessvariants.com/winning.dir/coregal.html") variante Coregal
+  a(href="https://www.chessvariants.com/winning.dir/coregal.html")
+    | variante Coregal
   | &nbsp;sur chessvariants.com.
   | Cette variante est jouable également 
   a(href="https://greenchess.net/rules.php?v=coregal") sur greenchess.net
diff --git a/client/src/translations/rules/Enpassant/en.pug b/client/src/translations/rules/Enpassant/en.pug
index 5d82f43a..2ba1e656 100644
--- a/client/src/translations/rules/Enpassant/en.pug
+++ b/client/src/translations/rules/Enpassant/en.pug
@@ -11,15 +11,25 @@ ul
     Even if the capturer gets captured en passant on next turn,
     the initial captured piece does not return to the board.
 
-p This is a generalisation of the pawn en passant capture, which is still possible.
+p.
+  This is a generalisation of en passant capture with the pawn, which is
+  still possible. It leads to some unexpected situations,
+  like on the following diagram after 1...Rb2-d2+: this is not a mate
+  since the king can capture the rook en passant on c2: 2.Kxc2 e.p.
+
+figure.diagram-container
+  .diagram
+    | fen:6k1/1p1p4/6p1/4P3/2n5/3nP1b1/3r1BP1/R2K1R1B:
+  figcaption After 1...Rb2-d2+: not a mate!
 
 h3 Special moves
 
 ul
   li.
-    Knights become knightriders, which may make multi knight-steps in the same direction.
-    For example in the standard initial position, the knightrider on g1
-    can go to e5 or capture d7 in addition to the knight moves (see diagram below).
+    Knights become knightriders, which may make multi knight-steps in the
+    same direction. For example in the standard initial position,
+    the knightrider on g1 can go to e5 or could capture on d7 in addition
+    to the knight moves (see diagram below).
   li The king can capture a piece en passant by making a knight move.
 
 figure.diagram-container
@@ -43,7 +53,8 @@ figure.diagram-container
 h3 Source
 
 p
-  a(href="https://www.chessvariants.com/difftaking.dir/enpassant.html") En Passant chess
+  a(href="https://www.chessvariants.com/difftaking.dir/enpassant.html")
+    | En Passant chess
   | &nbsp;on chessvariants.com.
 
 p Inventor: Andy Kurnia (1998)
diff --git a/client/src/translations/rules/Enpassant/es.pug b/client/src/translations/rules/Enpassant/es.pug
index e36baaac..50770d18 100644
--- a/client/src/translations/rules/Enpassant/es.pug
+++ b/client/src/translations/rules/Enpassant/es.pug
@@ -9,10 +9,19 @@ ul
     esta captura solo es posible inmediatamente después del movimiento
     (misma condición que para capturar peones en passant).
   li.
-    Incluso si el capturador se encuentra capturado en el siguiente movimiento,
-    la pieza inicialmente capturada no vuelve al tablero.
+    Incluso si el capturador se encuentra capturado en el siguiente
+    movimiento, la pieza inicialmente capturada no vuelve al tablero.
 
-p Es una generalización de la captura en passant de los peones, que sigue siendo posible.
+p.
+  Es una generalización de la captura en passant de los peones,
+  que sigue siendo posible. Esto lleva a algunas situaciones inesperadas,
+  como en el siguiente diagrama después de 1...Rb2-d2+: no es un mate desde
+  el rey puede tomar la torre en passant en c2: 2.Kxc2 e.p.
+
+figure.diagram-container
+  .diagram
+    | fen:6k1/1p1p4/6p1/4P3/2n5/3nP1b1/3r1BP1/R2K1R1B:
+  figcaption Despues de 1...Rb2-d2+: no es jaque mate!
 
 h3 Movimientos especiales
 
@@ -21,8 +30,10 @@ ul
     Los caballos se convierten en caballeros, capaces de realizar varias
     saltos en la misma dirección.
     Por ejemplo en la posición inicial, el caballero en g1 puede ir a e5
-    o tomar d7 además de los movimientos de caballo.
-  li El rey puede capturar una pieza en passant haciendo un movimiento de caballo.
+    o podría tomar en d7 además de los movimientos de caballo.
+  li.
+    El rey puede capturar una pieza en passant haciendo
+    un movimiento de caballo.
 
 figure.diagram-container
   .diagram
@@ -36,7 +47,8 @@ p.
   un jaque o incluso un jaque mate sería posible en el primer movimiento.
   En el diagrama a continuación 1.Nxe7 es mate, y las negras al turno
   podría jugar 1...Nxg2 atrapando a la dama.
-  Es por eso que las capturas solo están autorizadas desde el segundo movimiento.
+  Es por eso que las capturas solo están autorizadas
+  desde el segundo movimiento.
 
 figure.diagram-container
   .diagram
@@ -47,7 +59,8 @@ h3 Fuente
 
 p
   | La 
-  a(href="https://www.chessvariants.com/difftaking.dir/enpassant.html") variante En Passant
+  a(href="https://www.chessvariants.com/difftaking.dir/enpassant.html")
+    | variante En Passant
   | &nbsp;en chessvariants.com.
 
 p Inventor: Andy Kurnia (1998)
diff --git a/client/src/translations/rules/Enpassant/fr.pug b/client/src/translations/rules/Enpassant/fr.pug
index 64a07615..1a818f70 100644
--- a/client/src/translations/rules/Enpassant/fr.pug
+++ b/client/src/translations/rules/Enpassant/fr.pug
@@ -1,5 +1,6 @@
 p.boxed
-  | Toutes les pièces peuvent être capturées en passant, par n'importe quelle pièce.
+  | Toutes les pièces peuvent être capturées en passant,
+  | par n'importe quelle pièce.
 
 p Plus précisément :
 ul
@@ -12,7 +13,16 @@ ul
     Même si le capturant se retrouve capturé au coup suivant, la pièce
     initialement capturée ne revient pas sur l'échiquier.
 
-p C'est une généralisation de la prise en passant des pions, qui reste possible.
+p.
+  C'est une généralisation de la prise en passant des pions,
+  qui reste possible. Cela mène à certaines situations inattendues, comme
+  sur le diagramme suivant après 1...Rb2-d2+ : ce n'est pas un mat puisque
+  le roi peut prendre la tour en passant en c2 : 2.Kxc2 e.p.
+
+figure.diagram-container
+  .diagram
+    | fen:6k1/1p1p4/6p1/4P3/2n5/3nP1b1/3r1BP1/R2K1R1B:
+  figcaption Après 1...Rb2-d2+ : pas un mat !
 
 h3 Coups spéciaux
 
@@ -20,9 +30,11 @@ ul
   li.
     Les cavaliers deviennent des chevaliers, pouvant effectuer plusieurs
     déplacements de cavalier dans la même direction.
-    Par exemple dans la position initiale, le chevalier en g1 peut aller en e5
-    ou prendre d7 en plus des coups de cavalier.
-  li Le roi peut capturer une pièce en passant en effectuant un coup de cavalier.
+    Par exemple dans la position initiale, le chevalier en g1 peut aller
+    en e5 ou pourrait prendre en d7 en plus des coups de cavalier.
+  li.
+    Le roi peut capturer une pièce en passant en effectuant
+    un coup de cavalier.
 
 figure.diagram-container
   .diagram
@@ -34,7 +46,7 @@ figure.diagram-container
 p.
   Les déplacements du cavalier étant augmentés, une capture,
   un échec ou même un mat seraient possibles au premier coup.
-  Sur le diagramme ci-dessous 1.Nxe7 fait mat, et les noirsau trait
+  Sur le diagramme ci-dessous 1.Nxe7 fait mat, et les noirs au trait
   pourraient jouer 1...Nxg2 piégeant la dame.
   C'est pourquoi les captures ne sont autorisées qu'à partir du second coup.
 
@@ -47,7 +59,8 @@ h3 Source
 
 p
   | La 
-  a(href="https://www.chessvariants.com/difftaking.dir/enpassant.html") variante En Passant
+  a(href="https://www.chessvariants.com/difftaking.dir/enpassant.html")
+    | variante En Passant
   | &nbsp;sur chessvariants.com.
 
 p Inventeur : Andy Kurnia (1998)
diff --git a/client/src/variants/Arena.js b/client/src/variants/Arena.js
index 33940b83..7cfda1d0 100644
--- a/client/src/variants/Arena.js
+++ b/client/src/variants/Arena.js
@@ -100,6 +100,9 @@ export class ArenaRules extends ChessRules {
     return moves;
   }
 
+  postPlay() {} //no kingPos no castleFlags
+  postUndo() {}
+
   getCurrentScore() {
     const color = this.turn;
     if (!this.atLeastOneMove())
diff --git a/client/src/variants/Checkered.js b/client/src/variants/Checkered.js
index 799c3e54..bca365d0 100644
--- a/client/src/variants/Checkered.js
+++ b/client/src/variants/Checkered.js
@@ -429,37 +429,25 @@ export class CheckeredRules extends ChessRules {
       return "0-0";
     }
 
-    // Translate final square
     const finalSquare = V.CoordsToSquare(move.end);
-
     const piece = this.getPiece(move.start.x, move.start.y);
+    let notation = "";
     if (piece == V.PAWN) {
       // Pawn move
-      let notation = "";
       if (move.vanish.length > 1) {
         // Capture
         const startColumn = V.CoordToColumn(move.start.y);
-        notation =
-          startColumn +
-          "x" +
-          finalSquare +
-          "=" +
-          move.appear[0].p.toUpperCase();
-      } //no capture
-      else {
-        notation = finalSquare;
-        if (move.appear.length > 0 && piece != move.appear[0].p)
-          //promotion
-          notation += "=" + move.appear[0].p.toUpperCase();
-      }
-      return notation;
+        notation = startColumn + "x" + finalSquare;
+      } else notation = finalSquare;
+    } else {
+      // Piece movement
+      notation =
+        piece.toUpperCase() +
+        (move.vanish.length > 1 ? "x" : "") +
+        finalSquare;
     }
-    // Piece movement
-    return (
-      piece.toUpperCase() +
-      (move.vanish.length > 1 ? "x" : "") +
-      finalSquare +
-      (move.vanish.length > 1 ? "=" + move.appear[0].p.toUpperCase() : "")
-    );
+    if (move.appear[0].p != move.vanish[0].p)
+      notation += "=" + move.appear[0].p.toUpperCase();
+    return notation;
   }
 };
diff --git a/client/src/variants/Extinction.js b/client/src/variants/Extinction.js
index 59620f95..8c970682 100644
--- a/client/src/variants/Extinction.js
+++ b/client/src/variants/Extinction.js
@@ -24,8 +24,6 @@ export class ExtinctionRules extends ChessRules {
     return true;
   }
 
-  scanKings() {}
-
   setOtherVariables(fen) {
     super.setOtherVariables(fen);
     const pos = V.ParseFen(fen).position;
diff --git a/client/src/variants/Losers.js b/client/src/variants/Losers.js
index b39d24fb..daabbab4 100644
--- a/client/src/variants/Losers.js
+++ b/client/src/variants/Losers.js
@@ -5,7 +5,7 @@ import { randInt } from "@/utils/alea";
 export class LosersRules extends ChessRules {
   // Trim all non-capturing moves
   static KeepCaptures(moves) {
-    return moves.filter(m => m.vanish.length == 2);
+    return moves.filter(m => m.vanish.length == 2 && m.appear.length == 1);
   }
 
 	// Stop at the first capture found (if any)
@@ -18,7 +18,7 @@ export class LosersRules extends ChessRules {
           this.board[i][j] != V.EMPTY &&
           this.getColor(i, j) != oppCol &&
           this.getPotentialMovesFrom([i, j]).some(m =>
-            // Warning: duscard castle moves
+            // Warning: discard castle moves
             m.vanish.length == 2 && m.appear.length == 1)
         ) {
           return true;
-- 
2.44.0