Go problems No. 7 Weekly problems

Daily problem

{"filetype":"problem","stonesize":"20","commentpos":"right","autocrop":"true"}
(;AW[ba][bb][bc][bd][be][cf][df][ef][fe][ge][gc][hc][ic][gb][jb][fa][dd][dc][ec]AB[ee][de][ce][cd][cc][cb][ca][ed][fd][fc][fb][ga][ha][hb]SZ[19]

(;B[db];W[ea]
(;B[da])
(;B[eb];W[dc];B[da];W[fa]))
(;B[eb];W[ea];B[da];W[fa])
(;B[ea];W[db]))

No. 7 Weekly problems

Tuesday, 10 May 2011 08:52 Written by Administrator 
{"filetype":"problem","stonesize":"26",bounds:{'l':'0','t':'0','r':'11','b':'11'},"dummy":"dummy"}

(;FF[4]ST[2]RU[Japanese]AB[db][ed][ec][gd][dc][de][df][cb][cf][ci]
[be][bf][bh]AW[ba][bb][bd][bi][bj][ac][ee][ef][eg][dd][dg][cc][cd][ce][ch]C[B to play]
AP[CGoban:3]SZ[11]GM[1]KM[0]

(;B[cg];W[dh];B[ae];W[ag];B[ad];W[bc];B[ca];W[bg]C[dead missing a liberty.])
(;B[ae];W[bg];B[ad];W[bc];B[ca];W[cg]C[same as previous diagram. missing a liberty])
(;B[ab]C[Tesuji]
(;W[aa];B[ae];W[ad];B[cg];W[dh];B[ag])
(;W[bg]C[W tries to kill anyway];B[ad];W[ae];B[af];W[aa];B[ad];W[bc];B[ca];W[ae]
C[the whole corner becomes a ko.])))