Tsumego 41: Black to kill
For the previous problem, please find the solution here.
Tsumego 42: Black to kill - a famous problem
A famous problem, but do you know all the variations?
For the previous problem, please find the solution here.
Tsumego 44: Black to live
For the previous problem, please find the explanation of the solution here.
Tsumego 45: Black to play - a strange problem with a strange result
For the previous problem, please find the explanation of the solution here.
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Black plays J2. If white tries to escape with D1, Black plays C2 and so on. So only choice for white is to cut at J3. Than black invests one more stone at K3 creating a fancy clump. White then wins the capturing race with the clump, but after the capture black can play an ichi no shita at J2 capturing a living shape.
Nice fancy clump, but after you play J2, can white do something further?
Tsumego 46: Black to kill
For the previous problem, please see the explanation of the solution here.
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Tsumego 50: Black to live by making use of white’s weakness
Another famous problem. May be difficult for first-timers.
For the previous problem, please find the solution here.
Are you kidding 
? That’s a very hard one even for a strong player
I meant those seeing this problem for the first time. Some problems are difficult no matter how many times you see it.
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Tsumego 54: Black to kill
For the previous problem, see the solution here.
White looks impenetrable. Can black find a breakthrough somewhere?
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