YouRang: Black's ill-conceived attack leads to well-deserved loss. The losing move was <16...Bxh3?> [diagram]
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Black correctly figured that the bishop was immune, since 17.gxh3?? Nf3+ forks K+Q. Of course, white wasn't about to fall for that, but it's not so clear that black thought through the consequences of what white *would* do. White responded with arguably the most logical move: kick the knight and then take the bishop! <17.f4! Ng6 18.gxh3>. This does allow <18...Qxh3>, with the black queen picking up another pawn and approaching white's exposed king, and perhaps black saw this and the two pawns as adequate compenstation. However, as ill-conceived attacks often do, it opened the door for a strong counter-attack: <19.Qb4+!> [diagram]
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A tight spot for black! What doesn't work:
- 19...Kg8? 20.Bxf7+! Kxf7 21.Ng5+ and it's black being hit with a K+Q fork. - 19...Ne7? (removes threat on Pf4, allowing...) 20.Re2! (defending against Q check, thus freeing white to play Ng5 or Qxd4; also threatens to double Rs on e-file against black's pinned N) Black's best is <19...Re7>, but then <20.Nf2!> hits the pinned R and buys time with an attack on black's Q. <20...Qd7> (guarding the R [*]) <21.Rad1 Qc8 22.Qxd4> [diagram]
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Black faces a bunch of threats on the back rank and on f7. White's Q+B+2R are all active and strong, and his extra N plays a big defensive role. Black's Q on c8 is on a hopeless defensive mission and his h8 rook is useless. [*] 20...Qd7 is no worse than 20...Qg3+ 21.Kf1 Qxf4 22.Qxb7 (threat: Qb8+ Re8 then Qxe8#) Re3 (safe square for R, and vacates e7 for K to escape) 23.Qxa7 (recovering pawn deficit) Ke7 (avoid check on 8th rank and activate other R) 24.Qc5+ Kf6 25.Rxe3 dxe3 26.Qxe3!. This line ends with white going into the endgame having a bishop for a pawn, since 26...Qxe3 is answered by 27.Ng4+, getting back the queen with a fork. | 
