void changePuzzles(struct Field player_puzzles[PLAYER_PUZZLES_NUMBER], char which_char[PLAYER_PUZZLES_NUMBER], struct Letter game_puzzles[GAME_CHARACTERS_NUMBER]) {

	int k; // position of player puzzle to change
	int r; // possition of random puzzle in GAME_PUZZLES
	int which_letter; // possition of returned letter in game_puzzles
	

	for (int i = 0; i < PLAYER_PUZZLES_NUMBER; i++) {
		k = (which_char[i] - 49);


		if (k >= 0 && k < 7) {

			//taking returning letter possition
			if (PLAYER_PUZZLES_CREATED) {
				which_letter = int(player_puzzles[k].letter->sign - 65);
			}

			//draw
			do {
				r = rand() % (GAME_CHARACTERS_NUMBER);
				if (game_puzzles[r].number > 0) {
					player_puzzles[k].letter = &game_puzzles[r];
					player_puzzles[k].color = LIGHTMAGENTA;
	;				game_puzzles[r].number -= 1;
					
					r = -1;
				}

			} while (r != -1);

			//returning
			if (PLAYER_PUZZLES_CREATED) {
				game_puzzles[which_letter].number += 1;
			}
			
		} 
		
	}

}






		//					###### changing puzzles #######

		else if (zn == 'w') { 
			for ( int i = 0; i < PLAYER_PUZZLES_NUMBER; i++) {
				which_change[i] = NULL;
			}
			counter_limit_change = 0;

			do {

				//LIMIT CHANGE WARNING
				if (ALL_PUZZLES_NUMBER < 7) {
					sprintf(message, " YOU CAN ONLY CHANGE : ");
					gotoxy(PLAYER_PUZZLES_X, PLAYER_PUZZLES_Y + 6);
					clreol();
					cputs(message);
					gotoxy(PLAYER_PUZZLES_X + 25, PLAYER_PUZZLES_Y + 6);
					putch(char(ALL_PUZZLES_NUMBER + 48));
				}
				
				which_buff = getch();

				k = int(which_buff - 49);
				if (k >= 0 && k < 7) {
					if ((Player_Puzzles[k].color == LIGHTMAGENTA) && (which_change[k] == NULL)) {
						counter_limit_change++;
						if ((ALL_PUZZLES_NUMBER - counter_limit_change) != -1) {
							Player_Puzzles[k].color = LIGHTGRAY;
							which_change[k] = which_buff;
						}
						else counter_limit_change--;
					}

					else {
						Player_Puzzles[k].color = LIGHTMAGENTA;
						which_change[k] = NULL;
						counter_limit_change--;
					}

					printPlayerPuzzles(PLAYER_PUZZLES_X, PLAYER_PUZZLES_Y, Player_Puzzles);
				}

			} while (which_buff != 'w' && which_buff != 0x0d);

					changePuzzles(Player_Puzzles, which_change, Game_Puzzles);
		}