From de04d37e8520079f5bba3b1a87d42313297543db Mon Sep 17 00:00:00 2001
From: Sebastiano Tronto <sebastiano@tronto.net>
Date: Fri, 19 Dec 2025 07:32:09 +0100
Subject: Add coordinate solvers for corners

---
 src/solvers/coord/corners.h | 72 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 src/solvers/coord/corners.h

(limited to 'src/solvers/coord/corners.h')

diff --git a/src/solvers/coord/corners.h b/src/solvers/coord/corners.h
new file mode 100644
index 0000000..cc0d9a5
--- /dev/null
+++ b/src/solvers/coord/corners.h
@@ -0,0 +1,72 @@
+#define CLASSES_CP_48 984
+
+STATIC uint64_t coordinate_corners_coord(const cube_t, const unsigned char *);
+STATIC cube_t coordinate_corners_cube(uint64_t, const unsigned char *);
+STATIC bool coordinate_corners_isnasty(uint64_t, const unsigned char *);
+STATIC size_t coordinate_corners_gendata(unsigned char *);
+
+STATIC coord_t coordinate_corners = {
+	.name = "CORNERS",
+	.coord = &coordinate_corners_coord,
+	.cube = &coordinate_corners_cube,
+	.isnasty = &coordinate_corners_isnasty,
+	.gendata = coordinate_corners_gendata,
+	.max = CLASSES_CP_48 * POW_3_7,
+	.trans_mask = TM_ALLTRANS,
+	.moves_mask_gendata = MM18_ALLMOVES,
+	.moves_mask_solve = MM18_ALLMOVES,
+	.is_admissible = &solution_always_valid,
+	.solution_prune = NULL,
+	.is_solvable = &cube_true,
+	.is_solved = NULL,
+	.allow_niss = false,
+	.pruning_distribution = {
+		[0] = 1,
+		[1] = 2,
+		[2] = 9,
+		[3] = 76,
+		[4] = 708,
+		[5] = 5022,
+		[6] = 28248,
+		[7] = 132076,
+		[8] = 505705,
+		[9] = 1102421,
+		[10] = 375380,
+		[11] = 2360,
+	},
+	.pruning_max = 11,
+	.sym = {
+		.classes = CLASSES_CP_48,
+		.max = FACT_8,
+		.coord = &coord_cp,
+		.cube = &invcoord_cp,
+		.max2 = POW_3_7,
+		.coord2 = &coord_co,
+		.cube2 = &invcoord_co,
+		.merge = &coordinate_merge_cpco,
+	},
+};
+
+STATIC uint64_t
+coordinate_corners_coord(const cube_t cube, const unsigned char *data)
+{
+	return coord_coord_generic(&coordinate_corners, cube, data);
+}
+
+STATIC cube_t
+coordinate_corners_cube(uint64_t i, const unsigned char *data)
+{
+	return coord_cube_generic(&coordinate_corners, i, data);
+}
+
+STATIC bool
+coordinate_corners_isnasty(uint64_t i, const unsigned char *data)
+{
+	return coord_isnasty_generic(&coordinate_corners, i, data);
+}
+
+STATIC size_t
+coordinate_corners_gendata(unsigned char *data)
+{
+	return coord_gendata_generic(&coordinate_corners, data);
+}
-- 
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