❤ PUZZLES: A tsumego a day keeps the doctor away

Subtle & elegant

Problem 1


Black to play.

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Problem 2


Black to play.

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Sometimes ko is the answer

Problem 1


Black to play.

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Problem 2


White to play.

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?


I guess a small failure when loading the problem?

Thanks for alerting me to this. I forgot to add the captions. Sorry.

Besides the correct answer James Davies also supplied two variations, one that is a failure for Black and one that is a failure for White.

(Normally I don’t add the variations, but this time I did.)

Solution and variations

This is according to James Davies the correct answer.


Failure for Black.


Failure for white.

The last move of the first problem is an obvious mistake.

Possibly so, but this is the answer as given in the book.

Truly brilliant

Problem 1


Black to play.

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Problem 2


Black to play.

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How? You have better move as creating a ko to capture the stones?

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Problem 1


Black to play.

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Problem 2


Black to play.

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Maybe A6 instead of B6?

With A6, white can rescue his stones, how can this be better?
This problem is fun because many will think of A6 instead of B6 and be satisfied by the shortage of liberties preventing white to capture black stones. But that is missing the ko which is no risk for black and can lead to capture white stones. A charming problem indeed.

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You are right. It doesn’t work.
Curious what @Glunkolin will come up with.

I replied to this puzzle Play Go at online-go.com! | OGS. The last move should deny the ko.

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Problem 1


Black to play.

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Problem 2


Black to play.

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Amigo no igo

Problem 1


Black to play.

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Problem 2


Black to play.

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Maeda Nobuaki

Problem 1


White to play.

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Problem 2


Black to play.

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Problem 1: white to play

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Problem 1


Black to play.

Interactive Puzzle

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Problem 2


White to play.

Interactive Puzzle

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Problem 1


Black to play.

Interactive Puzzle

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Problem 2


Black to play.

Interactive Puzzle

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Interesting variant(problem 1)

If white resists like this, what happens?

answer

Still a ladder, but black has to be careful to push twice straight on the 14 line to make it works (G and H). Going instead with J15 won’t work.

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