2018年度最佳战术组合2楚茨文格 Combination of the year 2018

chessbase网站投票评选2018年度最佳战术组合，虽然还没出结果，但入选的几个感觉都非常不错，直接分享出来。

第2个来自Howell-McShane

这里用到了zugzwang，此词汇源自德语，指轮到走棋的一方发现自己没有什么棋好走，一走就会使自己处于不利的情形。特别在残局中这种情况很多见，于是就称这一方陷入了zugzwang困境。中文翻译作无等着或楚茨文格，详细解释及例题看我前期的文章（一）和（二）。

这个棋的完整棋局搜索过程中费了些周折，还是坚持到最后，竟然找到了注释版；

1.e4e52.Nf3Nc63.Bb5a64.Ba4d6The old Steinitz Deferred Defence, used by Capablanca, Keres and Alekhine.5.O-OBd76.d4exd47.Nxd4Nxd48.Bxd7+Qxd79.Qxd4Nf610.Nc3Be7This also reminds me of various Lasker games with Black. I admire the way in which Luke’s slightly retro handling of the opening can open up such dynamic counter-attacking perspectives.11.Bf411. b3, to place the bishop on the long diagonal, is a more popular choice.11...O-O12.Rad1Qc613.Nd5This seemingly proactive advance actually simplifies the position and leaves Black without problems. Maintaining the tension with 13. f3 or 13. Rfe1 are both better tries for the advantage.13...Nxd514.exd5Qxc215.Rc1Qf516.Rxc7Bf6Now Black has no problems at all as his pieces are slightly better coordinated than White’s.17.Qd2Rfc818.Rfc1It might have been advisable for White to play 18. Bxd6 Rd8 19. Bg3 Rxd5 20. Qc2 when (although Black may have a tiny advantage) the symmetrical structure makes a draw extremely likely.18...Rxc719.Rxc7Re820.h3h521.b3g522.Be3Re523.Rxb7Rxd524.Qc1Be5Here 24...Rd3, intending ...Qd5 is an even more incisive continuation.25.Rb4Qd326.f4The decisive mistake. White has to play 26. g3. Although the reply 26. ...Qe2 looks scary after 27. Qc8+ Kg7 28. Qf5, White is actually OK.26...Qe227.Kh2gxf428.Bxf4Rd229.Qc6Kg7This is a far sighted move, tidying up Black’s position by avoiding potential back rank checks. White is now helpless against Black’s attack.30.a3h431.Rc4If White tries 31. Ra4 then, according to Luke, the reply 31... a5!! places White in an unexpected zugzwang. In general if the queen moves to b7/a8 then ...d6-d5 wins, as Qc6-h6+ in reply is no longer possible.31...Qe332.Qe4Now comes a thunderbolt.32...Qg3+After 32...Qg3+! White resigns, because after 33. Bxg3 Bxg3+ 34. Kg1, 34...Rd1+ mates.0-1