先上效果：

这是参照：

数字1到9是按照黑方视角，字母A到J是自己编号的。

chess.h

#pragma once

#include <easyx.h>
#include <conio.h>

#define WIDTH 650
#define HEIGHT 774
// A到J
#define CHESS_A 71
#define CHESS_B 141
#define CHESS_C 212
#define CHESS_D 283
#define CHESS_E 356
#define CHESS_F 426
#define CHESS_G 498
#define CHESS_H 569
#define CHESS_I 642
#define CHESS_J 713
// 1到9
#define CHESS_ONE 38
#define CHESS_TWO 110
#define CHESS_THREE 181
#define CHESS_FOUR 253
#define CHESS_FIVE 324
#define CHESS_SIX 395
#define CHESS_SEVEN 466
#define CHESS_EIGHT 537
#define CHESS_NINE 610

void draw_chessboard();// 画棋盘
void draw_line(int x, int y);// 画完整的兵、炮旁边的线，即画出四个方向的线
void draw_left_up_line(int x, int y);
void draw_right_up_line(int x, int y);
void draw_left_down_line(int x, int y);
void draw_right_down_line(int x, int y);
void centerText(int rx, int ry, int rw, int rh, const char* str);//画楚河汉界

draw_chessboard.cpp

#include "chess.h"

void draw_chessboard()
{
    initgraph(WIDTH, HEIGHT, EX_SHOWCONSOLE);
    setbkcolor(RGB(250, 225, 100));
    cleardevice();

    setlinecolor(BLACK);

    // 最外边一层
    setlinestyle(PS_SOLID, 6);
    line(31, 62, 617, 62);
    line(31, 62, 31, 720);
    line(31, 720, 617, 720);
    line(617, 62, 617, 720);

    // 中间一层，横着的
    setlinestyle(PS_SOLID, 3);
    line(CHESS_ONE, CHESS_A, CHESS_NINE, CHESS_A);// A
    line(CHESS_ONE, CHESS_J, CHESS_NINE, CHESS_J);// J

    // 中间一层，竖着的
    setlinestyle(PS_SOLID, 3);
    line(CHESS_ONE, CHESS_A, CHESS_ONE, CHESS_J);// 1
    line(CHESS_NINE, CHESS_A, CHESS_NINE, CHESS_J);// 9

    // 内层横着的
    setlinestyle(PS_SOLID, 2);
    line(CHESS_ONE, CHESS_B, CHESS_NINE, CHESS_B);// B
    line(CHESS_ONE, CHESS_C, CHESS_NINE, CHESS_C);// C
    line(CHESS_ONE, CHESS_D, CHESS_NINE, CHESS_D);// D
    line(CHESS_ONE, CHESS_E, CHESS_NINE, CHESS_E);// E
    line(CHESS_ONE, CHESS_F, CHESS_NINE, CHESS_F);// F
    line(CHESS_ONE, CHESS_G, CHESS_NINE, CHESS_G);// G
    line(CHESS_ONE, CHESS_H, CHESS_NINE, CHESS_H);// H
    line(CHESS_ONE, CHESS_I, CHESS_NINE, CHESS_I);// I

    // 内层竖着的
    setlinestyle(PS_SOLID, 2);
    line(CHESS_TWO, CHESS_A, CHESS_TWO, CHESS_E);// 2
    line(CHESS_THREE, CHESS_A, CHESS_THREE, CHESS_E);// 3
    line(CHESS_FOUR, CHESS_A, CHESS_FOUR, CHESS_E);// 4
    line(CHESS_FIVE, CHESS_A, CHESS_FIVE, CHESS_E);// 5
    line(CHESS_SIX, CHESS_A, CHESS_SIX, CHESS_E);// 6
    line(CHESS_SEVEN, CHESS_A, CHESS_SEVEN, CHESS_E);// 7
    line(CHESS_EIGHT, CHESS_A, CHESS_EIGHT, CHESS_E);// 8

    line(CHESS_TWO, CHESS_F, CHESS_TWO, CHESS_J);
    line(CHESS_THREE, CHESS_F, CHESS_THREE, CHESS_J);
    line(CHESS_FOUR, CHESS_F, CHESS_FOUR, CHESS_J);
    line(CHESS_FIVE, CHESS_F, CHESS_FIVE, CHESS_J);
    line(CHESS_SIX, CHESS_F, CHESS_SIX, CHESS_J);
    line(CHESS_SEVEN, CHESS_F, CHESS_SEVEN, CHESS_J);
    line(CHESS_EIGHT, CHESS_F, CHESS_EIGHT, CHESS_J);

    //九宫
    setlinestyle(PS_SOLID, 2);
    line(CHESS_FOUR, CHESS_A, CHESS_SIX, CHESS_C);
    line(CHESS_FOUR, CHESS_C, CHESS_SIX, CHESS_A);

    line(CHESS_FOUR, CHESS_H, CHESS_SIX, CHESS_J);
    line(CHESS_FOUR, CHESS_J, CHESS_SIX, CHESS_H);

    // 炮和兵旁边的线
    setlinestyle(PS_SOLID, 3);
    draw_line(CHESS_TWO, CHESS_C);
    draw_line(CHESS_EIGHT, CHESS_C);
    draw_line(CHESS_TWO, CHESS_H);
    draw_line(CHESS_EIGHT, CHESS_H);
    draw_right_up_line(CHESS_ONE, CHESS_D);
    draw_right_down_line(CHESS_ONE, CHESS_D);
    draw_line(CHESS_THREE, CHESS_D);
    draw_line(CHESS_FIVE, CHESS_D);
    draw_line(CHESS_SEVEN, CHESS_D);
    draw_left_up_line(CHESS_NINE, CHESS_D);
    draw_left_down_line(CHESS_NINE, CHESS_D);
    draw_right_up_line(CHESS_ONE, CHESS_G);
    draw_right_down_line(CHESS_ONE, CHESS_G);
    draw_line(CHESS_THREE, CHESS_G);
    draw_line(CHESS_FIVE, CHESS_G);
    draw_line(CHESS_SEVEN, CHESS_G);
    draw_left_up_line(CHESS_NINE, CHESS_G);
    draw_left_down_line(CHESS_NINE, CHESS_G);

    // 楚河汉界
    settextstyle((CHESS_F - CHESS_E) * 0.618, 0, TEXT("楷体"));
    settextcolor(BLACK);
    centerText(CHESS_ONE, CHESS_E, CHESS_NINE - CHESS_ONE, CHESS_F - CHESS_E , TEXT("楚河           汉界"));
}

void draw_line(int x, int y)
{
    draw_left_up_line(x, y);
    draw_right_up_line(x, y);
    draw_left_down_line(x, y);
    draw_right_down_line(x, y);
}
void draw_left_up_line(int x, int y)
{
    line(x - 4, y - 4, x - 18, y - 4);
    line(x - 4, y - 4, x - 4, y - 18);
}
void draw_right_up_line(int x, int y) 
{
    line(x + 4, y - 4, x + 18, y - 4);
    line(x + 4, y - 4, x + 4, y - 18);
}
void draw_left_down_line(int x, int y)
{
    line(x - 4, y + 4, x - 18, y + 4);
    line(x - 4, y + 4, x - 4, y + 18);
}
void draw_right_down_line(int x, int y)
{
    line(x + 4, y + 4, x + 18, y + 4);
    line(x + 4, y + 4, x + 4, y + 18);
}
void centerText(int rx, int ry, int rw, int rh, const char* str)
{
    int hSpace = (rw - textwidth(str)) / 2;
    int vSpace = (rh - textheight(str)) / 2;
    outtextxy(rx + hSpace, ry + vSpace, str);
}