In the opening, you should look at threats you can make all over the board, not just in a single battle. As white, you should look at how you can make threats on the left, on the right, and down the middle of the board. For example, the bot suggests |5.F10 The point is that you only need to build one bridge. In general, the more threats you generate in the opening, the more likely it will be that one of them will turn into a complete bridge. One line is 6.f7 7.c7 8.j7 9.d9 10.g5 11.d5 12.f3 13.e2 14.g14 15.r14 16.l15 17.k13 18.n11 19.r10 20.r19 21.r18 22.s17 23.j15 24.l10 25.p15 26.q6 27.o7 28.n7 29.n9 30.n19 31.m14 32.p6 33.l8 34.o12 35.o13 36.q11 37.t11 38.o8 39.o11 40.l6 41.h10 white wins.