(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
C[Endgame tesuji we don't know]
(;AW[hc][mc][hd][ld][ie][je]AB[ec][gc][cd][gd][ge][he][cg]
;W[hb]C[What is the best answer after this endgame move ]
(;W[ea]C[If black plays tenuki this monkey jump is too big])
(;B[gb]C[block is not good ]
;W[ga]
;B[fa]
;W[ha]
;B[fb]C[white gets the maximum out of the situation])
(;B[ga]C[good answer in this position]
;W[gb]
;B[fb]LB[ha:A]C[white has two choices, A or tenuki]
(;W[ha]C[if white blocks, black will tenuki]
;W[fa]
;B[ea]LB[gb:A]C[the endgame will be played like this.
black lost only one and half point more than the previous answer at A for black
But black took sente. 
])
(;B[ha]C[if white plays tenuki, black will have the chance to play sente endgame.]
;W[ia]
;B[fa]
;W[ib]LB[gb:A]TR[ia][ib]C[black destoryed two more points than previous move at A])))
(;AW[qn][rn][go][hp][ip][fq][hq][kq][lq][mq][fr][ir][jr]AB[qo][ro][jp][kp][lp][mp][np][pp][iq][jq][nq][pq][gr][hr]
;W[mr]C[endgame tesuji 

How will black answer?]
(;W[ps]C[if black plays tenuki, This monkey jump is too big])
(;B[nr]C[you know now that this is a bad answer ]
;W[ns]
;B[os]
;W[ms]
;B[or])
(;B[ns]C[we did study this and this is normally the good answer ]
(;W[nr]
;B[or]
;W[ms]C[black will tenuki])
(;B[ms]C[If white plays tenuki, black will play sente endgame later])
(;B[ls]C[also this is a good endgame jump]
(;W[ms]C[Wrong.]
;B[kr])
(;W[kr]
;B[ms])))
(;B[ls]C[this is a creative move ]
(;W[kr]
;B[nr]
(;W[ns]C[white can not hane]
;B[ms])
(;W[ms]))
(;W[ms]
;B[nr]
;W[kr]C[black tenuki]
;B[]
;W[ns]
;B[or]
;W[os]
;B[ps])
(;W[ks]
;B[ns]
(;B[ms]C[if white tenukis, this is sente for black]
;W[kr])
(;W[ms]C[Black can play tenuki again]
;B[]
;W[nr]
;B[or]
;W[os]
;B[ps]C[Black has prevented the monkey jump again]))))
(;AW[lb][kc][mc][nc][pc][pd][qd][qf][pj][qk]AB[mb][nb][ob][pb][qc]
;B[rc]C[Find surprising endgame tesuji.]
(;W[af]C[if white tenuki, ]
;B[sf]C[too big])
(;W[rd]C[bad answer]
;B[sd]
;W[se]
;B[sc]
;W[rf])
(;W[sd]C[good answer, but gote]
;B[ag]C[if black tunuki,]
(;W[rb]C[not possible]
;B[sb]
;W[sc]
;B[rd])
(;W[sc]C[normally like this]
;B[rd]
;W[re]
;B[sb]
;W[se]
;B[rb]))
(;W[rb]LB[qb:A][sb:B]C[tesuji!!!

Why?

Black can think two answers at A and B.]
(;B[qb]
;W[sd]C[sente]
;B[rd]
;W[re]
;B[sc]C[tenuki])
(;B[sb]
;W[rd]C[sente]
;B[qb]C[tenuki]))))
