Problem 11614 goproblems.com


Author	zafris	Created	2008-08-06
Difficulty	19 kyu (history)	Source	Game against a computer
AVG solve time	38 sec	Stars	3.09 (33 votes)
User attempts	6965 / 12390	Collections	Corner based
Genre	endgame	Your attempts	N/A
Similar problems
Created	2008-08-06
Source	Game against a computer
Stars	3.09 (33 votes)
Collections	Corner based
Your attempts	N/A

(;AW[rq]AW[rp]AW[sp]AW[qq]AW[pq]AW[pr]AW[ps]AW[nr]AW[nq]AW[oq]AW[mq]AB[lq]AB[lr]AB[mr]AB[ns]AB[os]AB[mp]AB[np]AB[op]AB[pp]AB[qp]AB[ro]AB[so]AB[qn]AB[lp]C[Maximize your score. Suppose that everywhere else on the board is settled. Should White play a move here? Play at P7 (No) if you think White cannot gain anything by plaing first.]LB[om:No]AP[goproblems] (;W[om]C[];B[rr]C[And if Black plays here?] (;W[sr];B[rs]C[Play at N7 (Tenuki) to tenuki if you want to tenuki again.]LB[mm:Tenuki] (;W[qr];B[ms]C[Play at N7 (Tenuki) to tenuki if you want to tenuki again.]LB[mm:Tenuki] (;W[qs];B[or]C[];W[ss]C[White ends up with 5 points (3 points of territory and 2 prisoners). This is one point less than if White did play a move.]) (;W[mm];B[or]C[Seki, no points.]) (;W[or]C[Seki, no points.])) (;W[qs];B[ms]C[Play at N7 (Tenuki) to tenuki if you want to tenuki again.]LB[mm:Tenuki] (;W[qr];B[or]C[];W[ss]C[White ends up with 5 points (3 points of territory and 2 prisoners). This is one point less than if White did play a move.]) (;W[or]C[Seki, no points.]) (;W[mm];B[or]C[Seki, no points.])) (;W[or];B[ms]C[Play at N7 (Tenuki) to tenuki if you want to tenuki again.Seki.]LB[mm:Tenuki] (;W[qs]C[Seki]) (;W[qr]C[Seki.]) (;W[mm];B[ss]C[10000 year ko.])) (;W[mm];B[ss]C[10000 year ko.])) (;W[rs];B[sr]C[Play at N7 (Tenuki) to tenuki if you want to tenuki again.]LB[mm:Tenuki] (;W[qr];B[ms]C[Play at N7 (Tenuki) to tenuki if you want to tenuki again.]LB[mm:Tenuki] (;W[sq];B[or];W[ss]C[White ends up with 5 points (3 points of territory and 2 prisoners). This is one point less than if White did play a move.]) (;W[or]C[Seki, no points.]) (;W[mm];B[or]C[Seki, no points.])) (;W[or];B[ms]C[Play at N7 (Tenuki) to tenuki if you want to tenuki again.]LB[mm:Tenuki] (;W[qr]C[Seki]) (;W[mm];B[ss]C[Ko, at best.])) (;W[mm];B[ss]C[Ko, at best.])) (;W[or];B[rs] (;W[ms];B[ns] (;W[sr];B[ss]C[10000 year ko.]) (;W[os];B[sr])) (;W[sr];B[ms]C[Play at N7 (Tenuki) to tenuki if you want to tenuki again.Seki.]LB[mm:Tenuki] (;W[qs]C[Seki]) (;W[qr]C[Seki.]) (;W[mm];B[ss]C[10000 year ko.])))) (;W[rr]C[Nice and simple. 6 points of territory for White.RIGHT]) (;W[sr]C[6 points for White.RIGHT]) (;W[rs]C[6 points for White.RIGHT]) (;W[sq];B[rs];W[rr];B[qs] (;W[ss];B[sr]C[Whoopsee. Ko.]) (;W[or];B[ss])) (;W[qs];B[rr]LB[om:Tenuki]C[If you think you dont need another move play P7 (Tenuki).] (;W[sr];B[rs];W[qr];B[ms]C[5 points to White. You will have to play inside your own group once more.]) (;W[om];B[sr]C[Dead...!]) (;W[rs];B[sr]C[Dead...]) (;W[ss];B[sr]) (;W[or];B[sr])) (;W[qr];B[rr]C[If you think you dont need another move play P7 (Tenuki).]LB[om:Tenuki] (;W[rs];B[sr]C[If you think you dont need another move play P7 (Tenuki).]LB[om:Tenuki] (;W[sq]C[Just 5 points. You will have to capture the stones in the end.]) (;W[or];B[ms]C[Seki...]) (;W[ms];B[ls]C[If you think you dont need another move play P7 (Tenuki).]LB[om:Tenuki] (;W[sq]C[5 points, you will need to capture at T1 later on.]) (;W[or];B[ms]C[Seki, no points.]) (;W[om];B[ms]C[Play at N7 (Tenuki) to tenuki if you want to tenuki again.]LB[mm:Tenuki] (;W[sq];B[or];W[ss]C[5 points.]) (;W[mm];B[or]C[Seki.]) (;W[or]C[Seki...]))) (;W[om];B[ms]C[Play at N7 (Tenuki) to tenuki if you want to tenuki again.]LB[mm:Tenuki] (;W[sq];B[or];W[ss]C[White ends up with 5 points (3 points of territory and 2 prisoners). This is one point less than if White did play a move.]) (;W[or]C[Seki, no points.]) (;W[mm];B[or]C[Seki, no points.]))) (;W[om];B[sr] (;W[rs];B[ms]C[Play at N7 (Tenuki) to tenuki if you want to tenuki again.]LB[mm:Tenuki] (;W[sq];B[or];W[ss]C[White ends up with 5 points (3 points of territory and 2 prisoners). This is one point less than if White did play a move.]) (;W[or]C[Seki, no points.]) (;W[mm];B[or]C[Seki, no points.])) (;W[or];B[rs])) (;W[sr];B[rs]C[If you think you dont need another move play P7 (Tenuki).] (;W[om];B[ms]C[Play at N7 (Tenuki) to tenuki if you want to tenuki again.]LB[mm:Tenuki] (;W[qs];B[or]C[];W[ss]C[White ends up with 5 points (3 points of territory and 2 prisoners). This is one point less than if White did play a move.]) (;W[mm];B[or]C[Seki, no points.]) (;W[or]C[Seki, no points.])) (;W[or];B[ms]C[Seki...]) (;W[qs];B[ms]C[5 points to White. You will have to play inside your own group once more.]))) (;W[or];B[ms]C[If you think you dont need another move play P7 (Tenuki).]LB[om:Tenuki] (;W[rr]C[6 points.RIGHT]) (;W[sr]C[6 points.RIGHT]) (;W[rs]C[6 points.RIGHT]) (;W[om];B[rr] (;W[sr];B[rs]C[Play at N7 (Tenuki) to tenuki if you want to tenuki again.]LB[mm:Tenuki] (;W[qr]) (;W[qs]) (;W[mm];B[ss]C[10000 year ko.])) (;W[rs];B[sr]C[Play at N7 (Tenuki) to tenuki if you want to tenuki again.]LB[mm:Tenuki] (;W[qr]C[Seki.]) (;W[mm];B[ss]C[Ko, at best.]))) (;W[sq];B[rr];W[rs];B[sr];W[qr];B[qs]) (;W[qr];B[rs] (;W[sr];B[rr]C[Seki]) (;W[rr];B[sr]C[Dead! (Bent 4 in the corner)])) (;W[ss];B[rr] (;W[sr];B[rs] (;W[qr];B[sq];W[sr]C[Seki]) (;W[qs];B[sq];W[sr]C[Seki])) (;W[rs];B[sr] (;W[qr];B[qs];W[rs]C[Seki]) (;W[sq];B[qs])) (;W[qr];B[rs];W[sr];B[sq];W[sr]C[Seki])) (;W[qs];B[rr] (;W[sr];B[rs]C[Seki]) (;W[rs];B[sr]))) (;W[ss];B[rr] (;W[rs];B[sr];W[qr];B[qs];W[rs];B[ms];W[sq]C[5 points, you need to capture.]) (;W[sr];B[rs];W[qr];B[sq];W[sr];B[ms];W[qs]C[5 points, you need to capture.])))