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Is your territory really large?

Techniques to reduce Black's territory.

1

The idea that "one or the other can always be placed."


The boundaries between black and white territory are becoming clearer and clearer.
Black seems to have more territory, but here White has found a good move.
Next is White's turn.
White should consider where to place his blocks to reduce Black's territory and turn the tables.

Question 3-1

Where should White place his blocks to maximally reduce Black's territory?

BlockGo

Failure

3-1 F

Placing a white block of "1-square" reduces the Black's territory, but

BlockGo
BlockGo
3-1 F 1-1

A black block of "6-squares" is placed and the Black's territory grows.
Black's territory is too large and White loses.
White is a failure.


Success

3-1 S

Placing a white block of "6-squares" is a smart strategy.

BlockGo
BlockGo
3-1 S 1-1

Placing a black block of "1-square" will prevent white blocks from connecting, but

BlockGo
3-1 S 1-2

By placing a white block of "3-squares" White can make a "boo".


BlockGo
3-1 S 1-3-1

If a black block of "3-squares" is placed and the Black's territory is expanded.

BlockGo
3-1 S 1-3-2

Place a white block of "6-squares" to compensate for the inadequacy of the white territory.

BlockGo
3-1 S 1-3-3

Place black blocks of "3 squares" to enclose the territory.
But the white territory is much larger.


BlockGo
3-1 S 1-4-1

When Black exploits an inadequacy in the white territory and places a black block of "6-squares"

BlockGo
3-1 S 1-4-2

Place a white block of "6-squares" to prevent Black from making a "boo".

BlockGo
3-1 S 1-4-3

Placing a black block of "1-square" forms a partial "dead-end" shape but

BlockGo
3-1 S 1-4-4

Placing a white block of "6-squares" eliminates the black "boo".
All black blocks on the board are taken.