Resignation Trap: According to Dr. Euwe, 10...g6? is a serious weakening of the a1-h8 diagonal, and he suggests 10...Be6 instead.14...Neg4 is a tactical way of defending the d-Pawn. If now 15. Nxd5? Bxg3! 16. Nxf6+ (or 16. Bxg4 Bxg4 17. Nxf6+ Qxf6) Qxf6 winning the exchange.
16. h3! counters both ...h5 and ...Nxh2 followed by ...h4. It also sets two traps: (after 16. h3) 16...Nxe3 17. fxe3 Bxg3 18. Qd4!, or if 16...Bxg3? 17. hxg4 and 18. gxh5.
18...Nd7 continues to protect the d-Pawn tactically: 19. Qxd5 Qh4! or 19. Nxe5 Be5. Meanwhile, White must deal with the threat of 19...Qh4.
19. g5! The young Flohr rarely missed tactical shots like this.
19...gxf2+? Better was 19...Qxg5 20. Ne4 Qh6 21.Nxg3 Be5 22.Qd2 Bxb2 23.Qxb2 Nb6.
22...f5 Weakening, but forced, since White was threatening 23. Rh2.
23...Bxf6 If 23...Rxf6 24. Raf1 Kg7 25. Ne4! and White wins.
26. Ne4! The point of the combination. If instead 26. Kxf2 Qf8+ and 27...Bf5 escapes the worst.
26...Rf7? 26...Qe7 27. Nxf2 is a better defense.
27...Rf6 Well, if the Black Rook leaves the 7th rank, then 28. Rf1 decides. While if Black moves his Queen to e8 or e7 on move 27, White wins with 28. Qh7+ Kf8 29. Bxg7+ Rxg7 30 Rf1+.