Exercise 37.1

Black to move. What should black play?

In this game position white could have won in a beautiful way. It seems as if the position is a draw, because white will lose piece 11. But he can keep the opponents king in the quadrant 2/35/49/16.

X 16

2.6 x 44 16 – 2

3.44 – 39!

Threatening 39 – 30 45 – 40

3… 2 - 16 4.45 – 40!

Piece 45 is marching to square 29!

4…. 16 – 7

5.39 – 34 7 - 11

Taking control over the trictrac lines. White is threatening 49 - 44 1 - 6 +.

If black plays 5… 7 – 16 the fastest way to win is 6.49 – 44! (threatening 34 – 43 16 x 49 40 – 35 +) 16 – 2 7.34 – 30 2 x 35 8.44 – 49 +.

6. 34 – 1! 11 - 2

7.40 – 34! 2 – 16

8.34 – 29 16 – 2

9.49 – 35

Exercise 37.2

Show how white wins using the same strategy after black plays 2… 16 – 7

37.1 – 37.8 White wins the endgame. Watch the quadrants!

37.1

37.2

37.3

37.4

37.5

37.6

37.7

37.8

Laying an ambush

Sometimes your opponent gets a king but you can catch it immediately. We call this situation an ambush.

1.4 – 27 39 – 44

2.37 – 32

Black is ambushed. At 44 – 49 white catches the by 27 – 16 +. At 44 – 50 the king is caught by 32 – 28 50 x 31 36 x 27.

White can only catch a future king at 50, so he has to prevent black from going to 49.

1.19 – 13 25 – 30

2.13 – 8 30 – 34

3.8 – 2 34 – 40

4.2 – 35! 40 – 45

5.35 – 19 45 – 50

X 19

X 23

Two things are necessary to be able to catch the opponents king. You have to guide the piece to the right square and you have to make an ambush.

White wants black to go to square 44. It is necessary to prevent black from going to 48. White makes an ambush, catching the king at 49 or 50.

1.6 – 1 34 – 39

2.1 – 29!

Preventing black from going to 43, because of 29 – 38! 43 x 21 36 – 31 with opposition.

2… 39 – 44

3.29 – 38 44 – 49

The ambush was ready for square 50 (38 – 33) but when black goes to 49 catching the king is delayed by one move. The next situation is very important to remember!

4.38 – 32!!

At the next move blacks king is caught. For example: 49 – 35 5.32 – 19 +.

A similar situation. Black is guided to square 41. Then the king is caught by a delayed ambush.

1.2 – 16 32 – 37

2.16 – 38 37 – 41

3.29 – 24 41 – 47

4.33 – 29

And the king is caught at the next move.

Usually you go to king with the piece closest to promotion (=getting a king). This is not always the best thing to do. In this case you have to focus on how to create the right ambush.

1.43 – 38! 17 – 21

2.27 x 16 26 – 31

3.16 – 11 31 – 36

4.11 – 7 36 – 41

5.7 – 2!

At 5… 41 – 46 6.2 – 19 white catches the king at the next move by 19 – 5.

At 5… 41 – 47 the king is caught by 6.23 – 19 +.

This is a very practical endgame. It has occurred in at least 5 official games recorded in the database of Turbo Dambase. In 3 out of 5 cases white went wrong and played 10 – 5? drawing the game.

1.10 – 4! 33 – 38

1… 33 – 39 2.4 – 22 39 – 43 3.22 – 28

with a perfect ambush.

2.4 – 10! 38 - 43

White loses a temp, to get the right position at the right moment. Black couldn’t go to 42 because of 10 – 37 +.

3.10 - 28

The ambush is ready.

In this game position the young Ainur Shaibakov didn’t rush to king with piece 23 but played the winning move:

1.36 – 31! 10 – 14

2.31 - 26! 14 – 19

3.23 x 14 24 – 29

4.14 – 10 29 – 33

5.10 – 5??

White was too impatient. He should have calculated the endgame till the end before playing. Black escaped with a draw because after 33 – 39! 6.5 – 28 39 – 43 white is at the right spot at the wrong time!

Black to play wanted to force a draw, but he was impatient. He should have waited until piece 16 or 25 is played before going to 26. After going to 26 immediately black was ambushed.

1… 8 – 26?

X 37

3.48 x 31 38 – 43

4.31 – 18!

White was in time trouble. He didn’t have enough time to calculate and gambled:

1.18 – 13?

White should have defended playing 1.44 – 39 40 – 45 2.21 – 17 with stick moves after 45 – 50.

X 38

X 11 6 x 26

White had time again to calculate, but it was too late. White will be ambushed:

3.27 – 22 38 – 42 4.22 – 18 42 – 47 5.18 – 13 (5.18 – 12 47 – 29 6.12 – 8 29 – 33 +) 47 – 20 6.13 – 8 20 – 33! +

White (J.P. Drost) made a good calculation winning the endgame in a beautiful way:

X 6

X 16

3.23 – 19 16 – 21

4.19 – 14 21 – 27

5.14 – 10

After 5… 27 – 32 6.10 – 5 32 – 38 7.29 – 24 black has no defence against the threat 24 – 20 +. Therefore black has to sacrifice two pieces.

5… 35 – 40

6.44 x 35 25 – 30

7.35 x 24 27 – 32

8.10 – 4 32 – 37

The formation 24/29 is helping white. After 32 – 38 the piece would be changed by 4 – 27 38 – 42 27 – 38 42 x 33 29 x 38 +.

9.4 – 27 6 – 11

9… 37 – 41 10.27 – 32 +

10.27 – 38 11 – 17

11.38 – 47 17 – 22

12.24 – 20 22 – 28

13.20 – 15 28 – 32

15.15 – 10 37 – 41

15… 37 – 42 16.47 x 33 37 – 41 17.33 – 47 41 – 46 18.10 – 5 +.

White could also have played 15.29 – 24 37 – 41 16.47 x 36 32 – 38 17.36 – 31 38 – 43 18.16 – 49 43 – 49 19.48 – 43 +.

16.47 x 36 32 – 38

17.36 – 27 38 – 42

X 24

Black surrendered.

White could have forced an ambush.

1.7 – 2! 14 – 19

2.25 – 20 19 – 24

3.2 x 30 31 – 37

3.20 – 15!

At 37 – 41 4.30 – 19 follows.

At 37 – 42 4.39 – 34 + follows.

38.1

38.2

38.3

38.4

38.5

38.6

38.7

38.8

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