This is the second of two analyzed games from a recent online match between Tokyo and Kuwana, posted on You Tube 19 June. I hope for corrections before I take this to Board Game Geek.
The players are tamiflu (Black) vs nekuron (White). I don't think sides were swapped.
Rewinding to find White's last mistake ... I think 13.t9 is below the W2-L24 diagonal - too close to the edge. As David says, 14.s9 looks like a clean win for Black at this point. I would add that 14.r1215.s1116.q1417.q1218.o13 also looks easy for Black.
It would have been better to play s10 earlier - like 9.s10. The intervening 9.i1010.i1111.h1212.j13 fighting a losing battle along the left edge enabled Black to gain an advantage by creating a narrow corridor for White on the right side of the board.
The players are tamiflu (Black) vs nekuron (White). I don't think sides were swapped.
|1.u3 2.o9 3.l10 4.l8 5.h8
suggest 6.l15
6.i16 was played. suggest 7.q14 8.p18 9.m17
7.m16 8.j9 played. 9.i11 looks better than what was played, but 10.l13 still seems to win for black.
9.i10 10.i11 11.h12 12.j13 13.t9 played. Now 14.s9 15.r8 16.r11 looks like a clean win for black.
14.r13 ALMOST throws the game away. IF 15.t14 16.t12 is losing. 17.s11 18.v11 19.l14 with two branches.
branch 1 20.q10 21.h14 22.j18 23.j15 24.n18 25.n17 26.o16 27.m19 28.l18 29.k18 30.m17 31.l16
branch 2 20.h14 21.n9 22.n11 23.m12 24.n7 25.o11
But 16.s11 wins for black. 17.u12 18.s16 there are many lines, just one is 19.s17 20.r18 21.t15 22.s15 23.t19 24.v12 25.t10 26.u14 27.r11 28.q11 29.l14 30.h14 31.n9 32.n11 black squeaks by.
15.d16 16.e16 played. White can still mix it up with 17.t14 and 18.t12 loses to 19.s11 20.v11 21.l14 22.q10 23.f15 24.f18 25.h16 26.j18 27.j15 but again 18.s11 and black holds on.
The game ended with 17.p11 18.p12 19.n10 20.m10 21.r10 22.n12 23.l14 24.g15
Rewinding to find White's last mistake ... I think 13.t9 is below the W2-L24 diagonal - too close to the edge. As David says, 14.s9 looks like a clean win for Black at this point. I would add that 14.r12 15.s11 16.q14 17.q12 18.o13 also looks easy for Black.
I would recommend 13.s10 for White. It is still a back-against-the-wall position, but with the support of the u3 peg, the upper right corner seems strong - for example, 14.r6 15.r8 16.q8 17.s6 18.t5 19.u5 20.v4 21.w4 or 14.s6 15.u7 16.t7 17.s8 18.r8 19.v5 20.q10 21.q11. On the other side, perhaps 14.r12 15.t13 16.q10 17.u11 18.s15 19.u16 20.v16 21.t14 22.t17 23.r15.
It would have been better to play s10 earlier - like 9.s10. The intervening 9.i10 10.i11 11.h12 12.j13 fighting a losing battle along the left edge enabled Black to gain an advantage by creating a narrow corridor for White on the right side of the board.
Yes 13.s10 was arguably better, but I claim it still loses after 14.r12 15.t13 16.s15 and now 17.u16 18.t16 19.t14 20.s14 or 19.s17 20.r17 21.t14 22.s14 or 17.s16 18.r17 19.t14 20.s14 or 17.p13 18.q10 (only now Q10.)
Yes you're right about 9.s10, that is significantly better than my suggested 9.i11. I will add that to my BGG article, thank you.
Here is a line I intend to show, to demonstrate why 9.s10 is better than waiting until move 13
10.r12 11.p13 12.p11 13.i11 14.l13 15.k12 16.k15 17.o11