(;SZ[11]AW[dc][jc][dd][de][ee][fe][ge][he][ie][je][ke][df][ff][kf][dg][eg][bh][ai][bi][ji][aj][cj][ij][kj][bk][hk][ik][jk] AB[cb][cc][cd][ce][cf][hf][if][jf][ag][bg][cg][gg][kg][ch][dh][eh][fh][gh][ih][jh][kh][di][hi][dj][gj][hj][dk][gk] LB[fa:L][eb:I]C[No komi, no prisoners yet - Black to win. FORCE] (;B[fa];W[eb] (;B[ea];W[gb] (;B[fb];W[db];B[da];W[fc];B[ga];W[ha];B[ca];W[hb]LB[fa:L][eb:I] C[Jigo, the best result from the large monkey jump (1st move 'L'). The 1 space jump (1st move 'I') allows a 1 point win, as black has sufficient ko threat advantage (one of more than 16 points, and another of more than 11).]) (;B[da];W[ga];B[fb];W[fc];B[db];W[ec]LB[fa:L][eb:I] C[Jigo, the best result from the large monkey jump (1st move 'L'). The 1 space jump (1st move 'I') allows a 1 point win, as black has sufficient ko threat advantage (one of more than 16 points, and another of more than 11).]) (;B[ga];W[da] (;B[db];W[ha];B[ca];W[fb];B[da];W[hb]LB[fa:L][eb:I] C[Jigo, the best result from the large monkey jump (1st move 'L'). The 1 space jump (1st move 'I') allows a 1 point win, as black has sufficient ko threat advantage (one of more than 16 points, and another of more than 11).]) (;B[ha];W[db]LB[fa:L][eb:I]C[You are cut off, and cannot form a separate live group. You could have got jigo from the large monkey jump (1st move 'L'); the 1 space jump (1st move 'L') allows a 1 point win.])) (;B[db];W[fb];B[ga];W[ha];B[da];W[hb]LB[fa:L][eb:I] C[Jigo, the best result from the large monkey jump (1st move 'L'). The 1 space jump (1st move 'I') allows a 1 point win, as black has sufficient ko threat advantage (one of more than 16 points, and another of more than 11).])) (;B[db];W[ea]LB[fa:L][eb:I]C[You are cut off and cannot form a separate live group. You could have got jigo from the large monkey jump (1st move 'L'); the 1 space jump (1st move 'I') allows a 1 point win.])) (;B[eb];W[db];B[da];W[fb] (;B[fa];W[ga] (;B[gb];W[ea] (;B[ci];W[ca];B[ck];W[bb];B[bc];W[ba];B[ab]LB[fa:L][eb:I] C[RIGHT You won by 1, the best result. The 17 point threat is just big enough to make 1st move 'I', better than the large monkey jump (L). The smaller ko threat (which must be at least 12 points) is required, to stop white answering the large ko threat and then playing 'C11' (after black takes the ko) which prevents black filling. It appears that the only time 'I' is a better move than 'L' into this formation, is when there are 2 ko threats (one 17 point or greater, the other 12 point or greater) to back it up; and even then, playing it costs sente. ------------------TO SUMMARISE: YOU NEED SERIOUS KO THREAT ADVANTAGE TO MAKE 'I' BETTER THAN 'L' INTO THIS FORMATION.]) (;B[ck];W[ca];B[ci];W[bb];B[bc];W[ba];B[ab]LB[fa:L][eb:I] C[RIGHT You won by 1, the best result. The 17 point threat is just big enough to make 1st move 'I', better than the large monkey jump (L). The smaller ko threat (which must be at least 12 points) is required, to stop white answering the large ko threat and then playing 'C11' (after black takes the ko) which prevents black filling. It appears that the only time 'I' is a better move than 'L' into this formation, is when there are 2 ko threats (one 17 point or greater, the other 12 point or greater) to back it up; and even then, playing it costs sente. ------------------TO SUMMARISE: YOU NEED SERIOUS KO THREAT ADVANTAGE TO MAKE 'I' BETTER THAN 'L' INTO THIS FORMATION.]) (;B[ii];W[ca];B[ki];W[bb];B[bc];W[ba];B[ab] C[Your 1st 4 moves were correct, but then you made the wrong threat, and got jigo (1 point worse than the solution). With this formation, a 17 point threat is the minimum size that allows a win.]) (;B[ki];W[ca];B[ii];W[bb];B[bc];W[ba];B[ab] C[Your 1st 4 moves were correct, but then you made the wrong threat, and got jigo (1 point worse than the solution). With this formation, a 17 point threat is the minimum size that allows a win.])) (;B[ec];W[ea] (;B[ci];W[ck];B[fa];W[fc];B[ea];W[ed];B[ca];W[gb]C[Jigo, 1 point worse than the solution. Your 1st 3 moves were correct and you got the ko; however, you did not use it correctly. Played this way, it is only worth 16 points. Black E9 should have been at G10.]) (;B[ck];W[ci];B[fa];W[fc];B[ea];W[ed];B[ca];W[gb]C[Jigo, 1 point worse than the solution. Your 1st 3 moves were correct and you got the ko; however, you did not use it correctly. Played this way, it is only worth 16 points. Black E9 should have been at G10.]))) (;B[ec];W[fa];B[ea];W[fc];B[ed];W[fd];B[ca] C[You lost by 1, 2 points worse than the solution. Your 3rd move should have been at G10, so that white could not afford to lose the ko. This would have allowed a 1 point win, as black has sufficient ko threat advantage (one of 17 points, and another of over 11).]) (;B[gb];W[ec];B[fa];W[ea] (;B[ci];W[ca];B[ck];W[bb];B[bc];W[ba];B[ab]LB[fa:L][eb:I] C[RIGHT You won by 1, the best result. The 17 point threat is just big enough to make 1st move 'I', better than the large monkey jump (L). The smaller ko threat (which must be at least 12 points) is required, to stop white answering the large ko threat and then playing 'C11' (after black takes the ko) which prevents black filling. It appears that the only time 'I' is a better move than 'L' into this formation, is when there are 2 ko threats (one 17 point or greater, the other 12 point or greater) to back it up; and even then, playing it costs sente. ------------------TO SUMMARISE: YOU NEED SERIOUS KO THREAT ADVANTAGE TO MAKE 'I' BETTER THAN 'L' INTO THIS FORMATION.]) (;B[ck];W[ca];B[ci];W[bb];B[bc];W[ba];B[ab]LB[fa:L][eb:I] C[RIGHT You won by 1, the best result. The 17 point threat is just big enough to make 1st move 'I', better than the large monkey jump (L). The smaller ko threat (which must be at least 12 points) is required, to stop white answering the large ko threat and then playing 'C11' (after black takes the ko) which prevents black filling. It appears that the only time 'I' is a better move than 'L' into this formation, is when there are 2 ko threats (one 17 point or greater, the other 12 point or greater) to back it up; and even then, playing it costs sente. ------------------TO SUMMARISE: YOU NEED SERIOUS KO THREAT ADVANTAGE TO MAKE 'I' BETTER THAN 'L' INTO THIS FORMATION.]) (;B[ii];W[ca];B[ki];W[bb];B[bc];W[ba];B[ab] C[You played the wrong ko threat, and got jigo. With this formation, a 17 point threat is the minimum size that allows a win.]) (;B[ki];W[ca];B[ii];W[bb];B[bc];W[ba];B[ab] C[You played the wrong ko threat, and got jigo. With this formation, a 17 point threat is the minimum size that allows a win.]))))