Problem	7243
Created	2005-09-14
Source	ferdi
Rating

Difficulty	2.9 dan
Average Solve Time	57 secs
User Attempts	532 / 2543
Solve Ratio Rating	1 kyu
	rating history

This is a well known tesuji, involving some life & death ;).

(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[7]KM[0.00] AW[fa][cb][eb][fb][cc][cd][dd][ed][fd][cf][df][ef][ff][gf][cg]AB[ca][da][ea][bb][db][bc][bd][be][ce][de][ee][fe][ge][bf][bg]C[No komi, no prisoners - Black to play and draw!] (;B[ba]CR[ba] (;W[gc]CR[gc] ;B[dc]CR[dc] ;W[ec]CR[ec]C[Jigo! RIGHT]) (;W[gd]CR[gd] ;B[gb]CR[gb] (;W[dc]CR[dc] ;B[fc]CR[fc]C[White is dead.]) (;W[gc]CR[gc] ;B[ec]CR[ec]C[White is dead.]) (;W[ec]CR[ec] ;B[gc]CR[gc]C[White is dead.])) (;W[dc]CR[dc] ;B[gc]CR[gc] ;W[gd]CR[gd] ;B[fc]CR[fc]C[White is dead.])) (;B[gd]CR[gd] ;W[dc]CR[dc] (;B[ba]CR[ba] ;W[gc]CR[gc]C[White wins by one point.]) (;B[fc]CR[fc] ;W[ba]CR[ba] (;B[da]CR[da] ;W[gb]CR[gb]C[White wins.]) (;B[gb]CR[gb] ;W[da]CR[da]C[White wins.]))) (;B[gc]CR[gc] ;W[gd]CR[gd] (;B[fc]CR[fc] ;W[gb]CR[gb]C[White wins.]) (;B[ec]CR[ec] ;W[fc]CR[fc]C[White wins.]) (;B[gb]CR[gb] ;W[dc]CR[dc]C[White wins.]) (;B[ba]CR[ba] (;W[fc]CR[fc] ;B[dc]CR[dc] ;W[gb]CR[gb]C[Jigo :) RIGHT]) (;W[gb]CR[gb] ;B[ec]CR[ec] ;W[fc]CR[fc] ;B[dc]CR[dc]C[Jigo! RIGHT]))) (;B[dc]CR[dc] ;W[ec]CR[ec] ;B[ba]CR[ba] ;W[gd]CR[gd]C[White wins by one point!]) (;B[fc]CR[fc] ;W[dc]CR[dc] (;B[ba]CR[ba] ;W[gc]CR[gc]C[White wins.]) (;B[gd]CR[gd] ;W[ba]CR[ba] (;B[gb]CR[gb] ;W[da]CR[da]C[White wins.]) (;B[da]CR[da] ;W[gb]CR[gb]C[White wins.]))))