Problem	1664
Created	2002-10-25
Source
Rating

Difficulty	25.3 kyu
Average Solve Time	15 secs
User Attempts	27630 / 38050
Solve Ratio Rating	20 kyu
	rating history

(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[9]KM[0.00]TM[] PW[none]PB[none]AW[ef][ff][dg][fg][bh][dh][ci]AB[cf][df][eg][eh][di][ei]TR[eg][eh][di][ei]C[How can black could save the marked stone ?] (;B[ch]CR[ch] ;W[cg]CR[cg] ;B[bg]CR[bg] ;W[ch]CR[ch] ;B[ah]CR[ah]C[RIGHT Black survive and win the corner !]) (;B[cg]CR[cg] ;W[ch]TR[dg][bh][ch][dh][ci]SQ[eg][eh][di][ei]C[White group have 3 liberties and your 2 so he win the capturing race.]) (;B[fh]CR[fh] ;W[gh]CR[gh]C[Black still die.]) (;B[fi]CR[fi] ;W[fh]CR[fh]C[black still die...]) (;B[bg]CR[bg] ;W[fh]TR[eg][eh][di][ei]CR[fh]C[CHOICE This way to kill is too slow and white can kill you before you kill him.]) (;B[gi]CR[gi] ;W[fh]CR[fh] ;B[fi]CR[fi] ;W[gh]CR[gh]C[Black die...]) (;B[bi]CR[bi] ;W[ai]CR[ai]C[It doesn't change the situation]) (;B[gh]CR[gh] ;W[fh]CR[fh]C[White cut the connection.]) (;B[ai]CR[ai] ;W[fh]CR[fh]C[Black die...]) (;B[ah]CR[ah] ;W[fh]CR[fh]C[Black die...]) (;B[ag]CR[ag] ;W[fh]CR[fh]C[Black die...]))