Whats worng with the make file format - makefile

Question

I wrote a makefile for my mini-project with gedit.
when I run "make", all *.o and executable created.
once I change one of my file (without make clean or make -B)
it's show it compile the chaneged file again and link all object again.
But the executable file works like nothing change.
(after "make -B" the executable file run ok)
CC = g++
CFLAGS = -Wall
OBJS = pawn.o knight.o bishop.o rook.o queen.o king.o board.o
movement.o game.o
all: ex1
ex1: $(OBJS)
$(CC) $(CFLAGS) $(OBJS) -o ex1
pawn.o: chess/tools/pawn.cpp chess/tools/tool.hpp
$(CC) $(CFLAGS) -c chess/tools/pawn.cpp
knight.o: chess/tools/knight.cpp chess/tools/tool.hpp
$(CC) $(CFLAGS) -c chess/tools/knight.cpp
bishop.o: chess/tools/bishop.cpp chess/tools/tool.hpp
$(CC) $(CFLAGS) -c chess/tools/bishop.cpp
rook.o: chess/tools/rook.cpp chess/tools/tool.hpp
$(CC) $(CFLAGS) -c chess/tools/rook.cpp
queen.o: chess/tools/queen.cpp chess/tools/tool.hpp
$(CC) $(CFLAGS) -c chess/tools/queen.cpp
king.o: chess/tools/king.cpp chess/tools/tool.hpp
$(CC) $(CFLAGS) -c chess/tools/king.cpp
board.o: chess/board.cpp chess/board.hpp
$(CC) $(CFLAGS) -c chess/board.cpp
movement.o: chess/movement.cpp
$(CC) $(CFLAGS) -c chess/movement.cpp
game.o: chess/game.cpp
$(CC) $(CFLAGS) -c chess/game.cpp
clean:
rm *.o
If there is another problem or suggestion with the design of the make file, I will be glad to hear about it.
Edit
1)The program is not print nothing to the screen.
2)The change is in king.cpp file (located in another folder) print Print Change to screen
[av#ArchlinuxAvichai chess]$ ls
chess ex1 Makefile
[av#ArchlinuxAvichai chess]$ ls chess
board.cpp board.hpp game.cpp movement.cpp tools
[av#ArchlinuxAvichai chess]$ ls chess/tools
bishop.cpp king.cpp knight.cpp pawn.cpp queen.cpp rook.cpp tool.hpp
[av#ArchlinuxAvichai chess]$ make
g++ -Wall -c chess/tools/pawn.cpp
g++ -Wall -c chess/tools/knight.cpp
g++ -Wall -c chess/tools/bishop.cpp
g++ -Wall -c chess/tools/rook.cpp
g++ -Wall -c chess/tools/queen.cpp
g++ -Wall -c chess/tools/king.cpp
g++ -Wall -c chess/board.cpp
g++ -Wall -c chess/movement.cpp
g++ -Wall -c chess/game.cpp
g++ -Wall pawn.o knight.o bishop.o rook.o queen.o king.o board.o movement.o game.o -o ex1
[av#ArchlinuxAvichai chess]$ ./ex1
[av#ArchlinuxAvichai chess]$ *** AT this stage i change the file
[av#ArchlinuxAvichai chess]$
[av#ArchlinuxAvichai chess]$ make
g++ -Wall -c chess/tools/king.cpp
g++ -Wall pawn.o knight.o bishop.o rook.o queen.o king.o board.o movement.o game.o -o ex1
[av#ArchlinuxAvichai chess]$ ./ex1
[av#ArchlinuxAvichai chess]$
[av#ArchlinuxAvichai chess]$ make -B
g++ -Wall -c chess/tools/pawn.cpp
g++ -Wall -c chess/tools/knight.cpp
g++ -Wall -c chess/tools/bishop.cpp
g++ -Wall -c chess/tools/rook.cpp
g++ -Wall -c chess/tools/queen.cpp
g++ -Wall -c chess/tools/king.cpp
g++ -Wall -c chess/board.cpp
g++ -Wall -c chess/movement.cpp
g++ -Wall -c chess/game.cpp
g++ -Wall pawn.o knight.o bishop.o rook.o queen.o king.o board.o movement.o game.o -o ex1
[av#ArchlinuxAvichai chess]$ ./ex1
Print Change
[av#ArchlinuxAvichai chess]$

Answer 1

Try the following makefile:
CXX := g++
CXXFLAGS := -Wall
OBJS := pawn.o knight.o bishop.o rook.o queen.o king.o board.o movement.o game.o
COMPILE_CMD = ${CXX} -c -o $# ${CXXFLAGS} -MD -MP $<
LINK_CMD = ${CXX} -o $# ${LDFLAGS} $^
all: ex1
ex1: ${OBJS}
${LINK_CMD}
%.o : chess/tools/%.cpp
${COMPILE_CMD}
%.o : chess/%.cpp
${COMPILE_CMD}
-include $(OBJS:%.o=%.d)
clean:
rm -f *.o *.d
.PHONY: clean all
Changes:
Use ${CXX} for C++ code.
Auto-generate header dependencies.
Use pattern rules to avoid repetition.
Specify .o output files.
Mark targets clean and all as .PHONY.
Use LDFLAGS for linking.