3 files changed, 100 insertions, 0 deletions

diff --git a/src/pruning.c b/src/pruning.c
index 1dba949..aeeac21 100644
--- a/src/pruning.c
+++ b/src/pruning.c
@@ -73,6 +73,13 @@ pd_htr_drud = {
 };
 
 PruneData
+pd_cp_drud = {
+        .filename = "pt_cp_drud",
+        .coord    = &coord_cp,
+        .moveset  = &moveset_drud,
+};
+
+PruneData
 pd_htrfin_htr = {
         .filename = "pt_htrfin_htr",
         .coord    = &coord_htrfin,
@@ -99,6 +106,7 @@ PruneData * all_pd[] = {
         &pd_drud_eofb,
         &pd_drudfin_noE_sym16_drud,
         &pd_htr_drud,
+        &pd_cp_drud,
         &pd_htrfin_htr,
         &pd_nxopt31_HTM,
         NULL
diff --git a/src/pruning.h b/src/pruning.h
index 6bdbee1..a9acb5b 100644
--- a/src/pruning.h
+++ b/src/pruning.h
@@ -11,6 +11,7 @@ extern PruneData        pd_drud_sym16_HTM;
 extern PruneData        pd_drud_eofb;
 extern PruneData        pd_drudfin_noE_sym16_drud;
 extern PruneData        pd_htr_drud;
+extern PruneData        pd_cp_drud;
 extern PruneData        pd_htrfin_htr;
 extern PruneData        pd_nxopt31_HTM;
 
diff --git a/src/steps.c b/src/steps.c
index 3189811..a380494 100644
--- a/src/steps.c
+++ b/src/steps.c
@@ -26,6 +26,7 @@ static int              estimate_drud_eofb(DfsArg *arg);
 static int              estimate_dr_eofb(DfsArg *arg);
 static int              estimate_drudfin_drud(DfsArg *arg);
 static int              estimate_htr_drud(DfsArg *arg);
+static int              estimate_cp_drud(DfsArg *arg);
 static int              estimate_htrfin_htr(DfsArg *arg);
 static int              estimate_nxopt31_HTM(DfsArg *arg);
 static int              estimate_light_HTM(DfsArg *arg);
@@ -48,6 +49,8 @@ static char check_eo_msg[100]      = "EO must be solved on given axis";
 static char check_dr_msg[100]      = "DR must be solved on given axis";
 static char check_htr_msg[100]     = "HTR must be solved";
 static char check_drany_msg[100]   = "DR must be solved on at least one axis";
+static char check_co_msg[100]      = "CO must be solved on the given axis";
+static char check_coany_msg[100]   = "CO must be solved on at least one axis";
 
 /* Steps *********************************************************************/
 
@@ -886,6 +889,83 @@ htr_drfb = {
         .ntables   = 1,
 };
 
+/* Corners from DR */
+Step
+corners_dr_any = {
+        .shortname = "corners-dr",
+        .name      = "Solve corners from DR",
+
+        .final     = false,
+        .is_done   = check_corners_HTM,
+        .estimate  = estimate_cp_drud,
+        .ready     = check_coud_HTM,
+        .ready_msg = check_coany_msg,
+        .is_valid  = always_valid,
+        .moveset   = &moveset_drud,
+
+        .detect    = detect_pretrans_drud,
+
+        .tables    = {&pd_cp_drud},
+        .ntables   = 1,
+};
+
+Step
+corners_drud = {
+        .shortname = "corners-drud",
+        .name      = "Solve corners from DR on U/D",
+
+        .final     = false,
+        .is_done   = check_corners_HTM,
+        .estimate  = estimate_cp_drud,
+        .ready     = check_coud_HTM,
+        .ready_msg = check_co_msg,
+        .is_valid  = always_valid,
+        .moveset   = &moveset_drud,
+
+        .pre_trans = uf,
+
+        .tables    = {&pd_cp_drud},
+        .ntables   = 1,
+};
+
+Step
+corners_drrl = {
+        .shortname = "corners-drrl",
+        .name      = "Solve corners from DR on R/L",
+
+        .final     = false,
+        .is_done   = check_corners_HTM,
+        .estimate  = estimate_cp_drud,
+        .ready     = check_coud_HTM,
+        .ready_msg = check_co_msg,
+        .is_valid  = always_valid,
+        .moveset   = &moveset_drud,
+
+        .pre_trans = rf,
+
+        .tables    = {&pd_cp_drud},
+        .ntables   = 1,
+};
+
+Step
+corners_drfb = {
+        .shortname = "corners-drfb",
+        .name      = "Solve corners from DR on F/B",
+
+        .final     = false,
+        .is_done   = check_corners_HTM,
+        .estimate  = estimate_cp_drud,
+        .ready     = check_coud_HTM,
+        .ready_msg = check_co_msg,
+        .is_valid  = always_valid,
+        .moveset   = &moveset_drud,
+
+        .pre_trans = fd,
+
+        .tables    = {&pd_cp_drud},
+        .ntables   = 1,
+};
+
 /* HTR finish */
 Step
 htrfin_htr = {
@@ -956,6 +1036,11 @@ Step *steps[] = {
         &htr_drrl,
         &htr_drfb,
 
+        &corners_dr_any,
+        &corners_drud,
+        &corners_drrl,
+        &corners_drfb,
+
         &htrfin_htr,
 
         &cornershtr_HTM,
@@ -1168,6 +1253,12 @@ estimate_htr_drud(DfsArg *arg)
 }
 
 static int
+estimate_cp_drud(DfsArg *arg)
+{
+        return ptableval(&pd_cp_drud, arg->cube);
+}
+
+static int
 estimate_htrfin_htr(DfsArg *arg)
 {
         return ptableval(&pd_htrfin_htr, arg->cube);