Original subtitles

you

hi everyone is Jerry the bishop and

Knight checkmate is regarded by many as

the most difficult checkmate to master

it's one that I know well and I'm going

to share with you a systematic approach

to solving this endgame so that you two

can master it now the first thing to

take note of is we have 50 moves or less

to deliver checkmate

otherwise it's considered a draw so

where do we begin

well we begin by looking at what colors

Square our Bishop is on since we're

working with a light square bishop this

means we can only force checkmate if the

opposing King is in a light square

corner in this case we're talking about

a a or h1 now the first of six steps is

to simply centralize our pieces and let

me be more exact keep in mind that our

night is best coordinated with our

bishop by playing to the same color

square as our bishop with that said that

means our Bishop and Knight will be the

ones who occupied these two central

light squares our King on the other hand

will be on d4 or a five and in this case

he's going to end up on e5 and when he

gets there I'll let you know why exactly

we wanted him on the e5 square so let's

hop to it

let's get these pieces centralized and

complete step one our Bishop is looking

good and we have our King now on this g5

Square and our knight now on the same

color Square as our bishop this took ten

moves and it should take roughly ten

moves for you to achieve this type of

position and during this during these

ten moves you'll note that the black

King is staying far away from these

light corner squares where we can force

checkmate he's trying to put up as much

resistance as possible by staying near

this dark corner Square and the reason

we wanted our King on this e5 square is

for the simple fact that this black King

is staying near this corner Square and

we want our King as close to this corner

square as possible so that's why we want

our King Ani

in fact in step two which is a very

simple step we want to shift our King

one step closer diagonally towards this

corner square and this is done by first

making a waiting move waiting moves by

the way in this endgame are done with

the King and the bishop never the knight

so let's make a way to move with our

king our bishop is fine where he's at

nice and central so King to f5 King age

seven King f6 we're done with step two

what we do in step three is kick the

King out of the corner and then optimize

our Bishop in Knights position now when

we do this when we kick the King out of

the corner what's going to happen is

that he will end up in one of two large

triangles now what large triangles am I

talking about I'm talking about the

following large triangles that we can

generate starting first at this light

corner square and drawing like so this

is one of the triangles he can end up in

or this one right here once he is forced

out of the corner he is going to enter

one of these two large triangles and

just to give a quick summary once he is

in one of those two large triangles we

will then try to kick him into a medium

sized triangle and then finally one of

these two small triangles and then give

checkmate so let's see how we can do

just that in order to kick the King out

of the corner we need the help of our

Knight he needs to control this corner

square and he could do so by playing to

f7 or g6 we're going to play to f7 in

this case and we could see that that is

the square using the bishop as our

reference point it's the same square

that the bishop can also go to so let's

get our Knight to f7 but let's be a

little bit careful about how we do so if

we play the g5 looking to get here

this is stalemate the black King has no

legal moves and is clearly not in check

this is stalemate a draw in other words

and we want to avoid that so we can do

so by first pivoting on d6 and only then

jumping into this f7 square he is

controlling this corner square the

blacking is now very limited having only

one move King g8 and now we shift our

king over so he guards the h7 square

King to g6 all these squares I have

highlighted are controlled which means

that the King is now forced in the

direction we want them to go to namely a

8 now let me point out that this

position right here is one that can come

about where it is white to move and if

that is the case all you need to do is

make a waiting move with the bishop

keeping him on this diagonal of the

large triangle and you could simply drop

him back to b3

the King will then have to go to g8 and

it's the same procedure the King shifts

over to defend h7 okay but that's not

the case it is it was black to move in

that case and once he's on f7 once he's

moving in this direction we move our

knight we centralize our Knight so the

only way to centralize him is to play to

e5 one of those four central squares and

when he is there notice what happens the

bishop is now allowed to guard the g8

Square which means the King can't go

back to the corner and after came to e7

this is where we now optimize our Bishop

and Knights position the way we do this

envisioning this large triangle we post

the Bishop 1 square from the edge of a

triangle so in this case it's either b3

or f7 but we're not going to go to this

f7 square the King will be in charge of

guarding the squares near this edge of

the triangle so it's the further end of

the triangle that we want the bishop to

post up to so in this case it's Bishop

to b3 and after king d6 we now post the

knight

right across from the bishop with one

square separating them now take note of

the great the great number of squares

that the bishop and night alone are

controlling they are forming a great

wall and as we can see here there is no

way for this black King to escape to the

a1 square what we do from here is use

our King and Bishop to help push the

King into that medium-sized triangle now

before we get to pushing the King into

that medium-sized triangle let me just

point out that you may encounter an

opponent who runs away voluntarily from

the dark corner square so let me quickly

revert back to this position right here

where we saw the King go to the corner

what happens if the King tries to make a

mad dash towards let's say this other

corner this is how we can treat such a

player we can play our Bishop to this g8

Square and our our goal with this is to

post our bishop on the diagonal of the

large triangle we've done just that the

King still tries to run away what we

want to do next with our Bishop is

optimize him and that's done by posting

him right here one Square from the edge

we want to get our Bishop on c2 so we

need to get our night out of the way if

our Bishop is on c2 we want to get our

Knight right here

so we post our knight on d6 the King

still tries to run our knight gets to c4

the king is still trying to run our

Bishop plays here and very similar to

the position we just saw this Bishop and

Knight control all of these squares and

yet again form a great wall from here

you would then push the King into this

medium sized triangle in this direction

and then finally the very small triangle

right here but he did not go in that

direction but I believe it's an

important what if a what-if scenario to

cover he did instead go to the corner we

ended up going about the position like

so where we have our Bishop and Knight

controlling again all of these squares

blocking the King off so what we do from

here is use our King and Bishop alone to

push the King into this medium-sized

triangle so let's do that next we get

our King working he's controlling this

square and we need to make a way to move

waiting moves again are done with the

bishop and King alone and when we're

going to make a waiting move we're going

to do so along this diagonal so Bishop

c4 King there Bishop f7 this King is now

forced in the direction we wanted to go

to namely a a the King goes to d6 came

to f8 we are slowly but surely forcing

this King in the direction we want him

to go to in fact he is now inside this

medium-sized triangle and what we do now

is shift our Bishop we no longer need

our Bishop on this diagonal but rather

the one on a4 where he is controlling

the diagonal of the medium-sized

triangle so we get our King working and

our Bishop working in this position he

was of course attacked we want to

similar to how we optimized the bishop

in the large triangle we do so in the

medium-sized triangle as well one square

away from the edge in this case it would

be d7 or b5 if you go to b5 you're just

getting captured so the bishop posts up

he is optimized on this d7 square and

after King to b6

now is where we can reposition our

knight in fact our night for the rest of

the game he will only make four more

moves and I could actually

tell you the exact moves he will make

from here on out he is going to be

playing 2 F 4 D 5 f6 and d7 he's going

to do this little zigzag and on that

fourth move he's going to give either

check or checkmate now from this point

right here the knight is wanting to

centralize himself on this d5 square

that is three squares away from the

corner square where we want the King to

be we want our night on the d5 square so

let's get him there first posting up on

f4 after King to a5 the king is ready to

run away but our Knight is there just in

the nick of time to guard the B for a

square and if we just take a look at

again the bishop and Knights dominant

position look at all the squares that

they are controlling yet again a great

wall is being formed and this King is

now restricted to exactly these six

squares just like we did in the large

triangle we now use our King and Bishop

to force the King into the small

triangle so let's see that take shape

that is done by having our King come

over in this direction and push the King

up towards the corner square so King a6

king c5 king c4 we get our King working

all the way up here and now we have an

opportunity to finally post our bishop

on the diagonal of the small triangle

Bishop c8 King attacks the Bishop Bishop

a6 King a7 and we could just make a

waiting move at this point this is not

the most efficient

checkmate that I'm showing you from this

point on it's one move slower than what

you can really do but just for visual

purposes I'm going to make a King move

and then play King to be six right here

is really this final position that you

want to achieve where the bishop is on

that diagonal and the King is right next

to the bishop

from this position we've restricted

restricted the King to just these two

squares and from here all we're needing

to do is deliver checkmate and that's

done like so moving the knight to this

f6 square we essentially just want to

control b8 at this point with the knight

eventually and that happens soon enough

Bishop b7 King to be 8 and finally

Knight to d7 and that's checkmate so

that's all for this video as always I

hope you got something out of it take

care bye

you