diff --git a/main.c b/main.c
index 8816d2c..969d84c 100644
--- a/main.c
+++ b/main.c
@@ -23,6 +23,9 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#define PROG_UPDATEPRD 20
+#define NPUZZLES 1024U
+
 static uint32_t getseed(void)
 {
 	FILE *urandom = fopen("/dev/urandom", "rb");
@@ -44,19 +47,53 @@ int main(void)
 	printf("Seed: %u\n\n", seed);
 	srand(seed);
 
-	struct sudoku sud;
-	gen(&sud);
-	puts("Start:");
-	print(&sud);
-	putchar('\n');
+	struct sudoku puzzles[NPUZZLES];
+	unsigned i, j, bslen = 0;
+	fputs("Generating... ", stdout);
+	for (i = 0; i < NPUZZLES; ++i) {
+		if (i % PROG_UPDATEPRD == 0) {
+			for (j = 0; j < bslen; ++j)
+				putchar('\b');
+			bslen = (unsigned)printf("%u%%", 100 * i / NPUZZLES);
+			fflush(stdout);
+		}
 
-	bool res = solve(&sud);
-	if (!res) {
-		puts("Solver encountered an error\n");
-	} else {
-		puts("End:");
-		print(&sud);
+		gen(&puzzles[i]);
 	}
+	for (j = 0; j < bslen; ++j)
+		putchar('\b');
+	puts("100%");
+
+	bool res[NPUZZLES];
+	fputs("Solving... ", stdout);
+	for (i = 0; i < NPUZZLES; ++i)
+		res[i] = solve(&puzzles[i]);
+	puts("done");
+
+	unsigned error = 0, incomplete = 0, incorrect = 0, solved = 0;
+	for (i = 0; i < NPUZZLES; ++i) {
+		if (!res[i]) {
+			++error;
+			continue;
+		}
+		switch (check(&puzzles[i])) {
+		case INCOMPLETE:
+			++incomplete;
+			break;
+		case INCORRECT:
+			++incorrect;
+			break;
+		case SOLVED:
+			++solved;
+			break;
+		}
+	}
+
+	puts("\n       SUMMARY\n       =======");
+	printf("Solved:       %4u/%u\n", solved, NPUZZLES);
+	printf("Incomplete:   %4u/%u\n", incomplete, NPUZZLES);
+	printf("Incorrect:    %4u/%u\n", incorrect, NPUZZLES);
+	printf("Solver error: %4u/%u\n", error, NPUZZLES);
 
 	return 0;
 }