Problem	21919
Created	2018-03-12
Source	from a game played on KGS.
Rating

Difficulty	12.4 kyu
Average Solve Time	62 secs
User Attempts	440 / 1200
Solve Ratio Rating	6 kyu
	rating history

black to kill. this was missed by a 3 dan in the game.

(; AW [da][ea][ga][eb][ib][jb][kb][ec][fc][gc][hc][fd] AB [ca][ka][la][db][lb][cc][dc][ic][jc][kc][lc][ed][gd][hd][id][ee][fe][cf] SZ[19] C[black to kill.] (;B[hb] (;W[ha] C[CHOICE] (;B[ia] ;W[gb] ;B[ja] C[RIGHT correct.]) (;B[gb] ;W[fb] C[oops.]) (;B[ja] ;W[ia] C[white lives.]) ) (;W[gb] C[CHOICE] (;B[ia] ;W[ha] ;B[ja] C[RIGHT correct.]) (;B[ja] ;W[ha] ;B[ia] C[RIGHT correct.]) ) (;W[fb] C[CHOICE] (;B[ia] C[RIGHT correct.]) (;B[ha] C[RIGHT correct.]) (;B[ja] ;W[ha] ;B[ia] C[RIGHT correct.]) ) (;W[ia] C[CHOICE] (;B[gb] ;W[ha] ;B[fb] ;W[fa] ;B[gb] C[RIGHT correct.]) (;B[ja] ;W[ha] ;B[gb] ;W[fb] C[oops.]) ) ) (;B[ia] ;W[hb] C[black’s J19 was the move played in the game.] (;B[ja] ;W[fb] C[white lives.]) (;B[fb] ;W[ja] C[white lives.]) ) (;B[gb] ;W[hb] C[white lives.]) (;B[ja] ;W[ia] (;B[hb] ;W[ha] C[white lives.]) (;B[gb] ;W[hb] C[white lives.]) (;B[fb] ;W[hb] C[white lives.]) (;B[ha] ;W[hb] C[white lives.]) (;B[fa] ;W[hb] C[white lives.]) ) (;B[fb] (;W[ia] C[CHOICE] (;B[gb] ;W[hb] C[white lives.]) (;B[hb] ;W[gb] C[white lives.]) (;B[ja] ;W[hb] C[white lives.]) ) (;W[hb] C[CHOICE] ;B[ja] ;W[ia] C[white lives.]) ) (;B[ha] (;W[hb] C[CHOICE] ;B[ja] ;W[ia] C[white lives. white could tenuki, also.]) (;W[ia] C[CHOICE] (;B[gb] ;W[hb] C[white lives.]) (;B[ja] ;W[hb] C[white lives.]) ) ) (;B[fa] ;W[ia] (;B[gb] ;W[fb] C[white lives.]) (;B[ja] (;W[gb] C[CHOICE white lives.]) (;W[hb] C[CHOICE white lives.]) (;W[fb] C[CHOICE white lives.]) ) ) )