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今日格言：顶级优势也会被二流着法“贱卖”。
原文：A first-class advantage can be sold cheaply by making second-class moves.
今日对局：
IsaacBoleslavskyWhite
BukhutiGurgenidzeBlack
Rostov on Don 1960 Sicilian Defense B32
1 e4 c5 2 ♘f3 ♘c6 3 d4 d5?
快速澄清中心的想法，实际上会浪费很多时间。
This bid to liquidate the center loses too much time.
4 exd5 ♕xd5 5 ♘c3
像斯堪的纳维亚防御那样退后到 d8 或d6 都不行。例如5. ... Qd8 6. d5! Nb8，白方可以 7.Bf4 或者 7. Be3 Nd7 8. Bb5；5. ... Qd6 白方先d5再Nb5 或者直接 Nb5 都非常舒服。
For example, 5...♕d8 6 d5! ♘b8 7 ♗e3 ♘d7 8 ♗b5 or 7 ♗f4.
On 5...♕d6 White has a pleasant choice between 6 ♘b5 ♕b8 7 d5 and 6 d5 (6...♘e5 7 ♘b5).
5...♕e6+ 6 ♗e3 cxd4 7 ♘xd4 ♕d7
黑方可能寄希望于 7. ... Nxd4 8. Qxd4 然而马上发现对于白方的 Nd5 或者 Nb5无法有效防守，所以只能走 Qd7 避开。
Black probably counted on 7...♘xd4 8 ♕xd4 but then realized he would have no good answer to both 9 ♘d5 and 9 ♘b5.
白方在顶级优势下，8. Bb5 a6 9. Nxc6 就是二流走法，虽然也还不坏。
Good enough for a (second-class) advantage is 8 ♗b5 a6 9 ♘xc6..
8 ♘db5!
威胁 8. ...Qxd1+ 9. Rxd1 然后 Nc7# 闷杀。
Now 8...♕xd1+ 9 ♖xd1 threatens 10 ♘c7 mate.
8...♖b8 9 ♕e2!
当然比 9. Qxd7+ Bxd710. Nxa7要好。现在如果黑方9. ... a6 赶马，白方有 10. Rd1 捉后，逃后则 Nc7# 闷杀。
And White certainly deserves more than 9 ♕xd7+ ♗xd7 10 ♘xa7.
Now 9...a6 10 ♖d1 ♕f5? 11 ♘c7 mate is threatened.
9...f6 10 ♖d1 ♕g4
走 10. ... Qf5 11. Bxa7! Nxa7 12. Nd6+ 黑方丢后，更差。
Even worse is 10...♕f5 11 ♗xa7! ♘xa7 12 ♘d6+.
11 f3 ♕h5 12 ♗xa7! ♘xa7 13 ♘d6+ resigns.
思考题42：黑方为什么认输？
Question 42: Why resign?
思考题42答案：13. ... Kd7 14. Nxc8+ Kxc8 15. Qe6+然后三步杀。
Q42: 13...♔d7 14 ♘xc8+ ♔xc8 15 ♕e6+ mates.
例局：
TjarkTreinekensWhite
RudolfReichertBlack
Willingen 2001
1 e4 c5 2 ♘f3 ♘c6 3 d4 d5 4 exd5 ♕xd5 5 ♘c3 ♕h5? 6 ♘b5! ♖b8 7 ♗f4 e5 8 dxe5 ♗d7 (8...♗e6 9 ♘c7+ ♔e7 10 ♕d6 mate) 9 e6 fxe6 10 ♗xb8 and wins.
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