Problem 21374 goproblems.com

Add / View flags


Author	nimbim	Created	2017-01-23
Difficulty	9 dan (history)	Source	21st GS Caltex Cup
AVG solve time	45 sec	Stars	2 (2 votes)
User attempts	3 / 169	Collections	Pro Game, Side based, Game based
Genre	life and death	Your attempts	N/A
Similar problems
Created	2017-01-23
Source	21st GS Caltex Cup
Stars	2 (2 votes)
Collections	Pro Game, Side based, Game based
Your attempts	N/A

(;AB[bh]AB[ci]AB[dh]AW[ch]AW[cg]AB[cf]AB[df]AW[ce]AW[cd]AW[dc]AW[ec]AW[fc]AB[de]AB[ed]AW[ge]AW[fg]AW[ff]AW[fh]AW[fi]AB[ei]AB[dj]AB[dk]AW[ej]AW[ek]AW[dm]AW[dl]AB[cl]AW[bm]AW[cn]AW[bo]AW[dn]AB[el]AB[em]AB[en]AB[eo]AB[do]AB[co]AW[bp]AW[fj]LB[gk:Resign]AW[cp]AB[db]C[Can White do something here or should you resign?]AP[goproblems] (;W[bg];B[bf] (;W[bi];B[dg];W[ah];B[bj] (;W[eh] (;B[bl]C[CHOICE] (;W[aj];B[ak];W[di];B[cj] (;W[ei];B[af] (;W[ag];B[ai]C[Correct, this is a step-ko.RIGHT]) (;W[bk];B[ai]C[Correct, this is a step-ko.RIGHT]) (;W[ck];B[ai]C[Correct, this is a step-ko.RIGHT]) (;W[cm];B[ag])) (;W[bk];B[ck];W[ei];B[af];W[ag];B[ai]C[Correct, this is a step-ko.RIGHT])) (;W[di];B[cj];W[aj];B[af];W[ag];B[ak];W[ei];B[ai]C[Correct, this is a step-ko.RIGHT])) (;B[di];W[bk];B[aj];W[be];B[ck];W[af];B[bl]C[Black may decide to live small, but this would be too submissive in the game.RIGHT])) (;W[bk];B[aj] (;W[bl];B[af]C[Black is alive.]) (;W[eh];B[bl]) (;W[ak];B[bl] (;W[ai];B[cj]C[Black is alive.]) (;W[ck];B[cj]C[Black is alive.]) (;W[al];B[ck];W[am];B[af]C[Black is alive.])) (;W[ck];B[cj];W[bl];B[af];W[bh];B[bc];W[bd];B[cc]C[Black gets his 2nd eye in the corner.]) (;W[be];B[af];W[ck];B[bl] (;W[al];B[eh];W[cm];B[cj]) (;W[eh];B[ak]))) (;W[bl];B[bk] (;W[eh];B[di] (;W[aj];B[af]) (;W[ck];B[af];W[ak];B[bc];W[bd];B[cc]C[Black gets his 2nd eye in the corner.])) (;W[ck];B[eh])) (;W[aj];B[af] (;W[bk];B[ag];W[cj];B[bh];W[cg];B[bc];W[bd];B[cc]C[Black gets his 2nd eye in the corner.]) (;W[ag];B[bk]C[Black is alive])) (;W[af];B[be];W[aj];B[bk]C[Black is alive.]) (;W[ai];B[bk]C[Black is alive.])) (;W[bj];B[bi]C[Black can make two eyes.]TR[bk]TR[be]) (;W[dg];B[eg]C[Black can make two eyes.]) (;W[eh];B[dg]C[Black can make two eyes.])) (;W[bl];B[bj]C[Black has two eyes.]) (;W[bk];B[bj]C[Black has two eyes.]) (;W[bj];B[bg]TR[bk]TR[be]C[Black can make two eyes.]) (;W[gk];B[bj]C[Now you may resign.]) (;W[dg];B[eg]C[Black can make two eyes.]) (;W[cj];B[bj]C[Black has two eyes.]) (;W[ck];B[bj]C[Black has two eyes.]) (;W[bi];B[bg]TR[bj]TR[be]C[Black can make two eyes.]))