Step by Step: Calculation #28
By Mark Donlan
Step by Step: Calculation is designed to improve your visualization and calculation skills. The premise is simple: find the winning move in the first diagram and then calculate the win from the second diagram and determine how it relates to the first. On occasion follow-up questions will be asked relating to various sidelines. For best results, set the position up on the board and think for as long as you need without moving the pieces.
White to move and win
[FEN “6R1/1p3p1p/7k/pr1nB1p1/6P1/1P2P3/5P2/6K1 w – – 0 42”]
Calculate a win for White
[FEN “2R5/1p3p1p/6k1/pr1n2p1/3B2P1/1P2P3/5P2/6K1 w – – 0 39”]
Peng,Zhaoqin (2433) – Hamelink,Desiree (2187)
NED-ch (Women) Leeuwarden (4), 28.06.2003
Slav Defense [D18]
1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.Nf3 dxc4 5.a4 Bf5 6.Nh4 e6 7.Nxf5 exf5 8.e3 Bb4 9.Bxc4 0–0 10.0–0 Nbd7 11.Bd2 g6 12.Qb3 a5 13.Rad1 Nb6 14.Bd3 Rc8 15.Bc1 Qe7 16.Na2 Nfd5 17.Bb1 Rfe8 18.h3 c5 19.dxc5 Qxc5 20.Bd3 Re5 21.Bb5 Qc2 22.Qxc2 Rxc2 23.Nxb4 Nxb4 24.Rd8+ Kg7 25.b3 N6d5 26.Ba3 Re7 27.Rd1 Nc3 28.R1d2 Rxd2 29.Rxd2 Nxb5 30.axb5 Rc7 31.Bb2+ Kh6 32.Bf6 Rc5 33.Rd4 g5 34.g4 Rd5 35.Rc4 Kg6 36.Bd4 fxg4 37.hxg4 Rxb5 38.Rc8 Nd5
Diagram Two
39.Rg8+ Kh6 40.Bg7+ Kg6 41.Be5+ Kh6
Diagram One
42.Bd6! 1-0 Mate is unstoppable.
Download Step By Step: Calculation #28 in PDF format.
All previous columns are available in the ChessCafe.com Archives.
Copyright 2014 Mark Donlan and ChessEdu.org. All Rights Reserved.
Mark,
Is there a way to get the previous 27 Step by Step: Calculation puzzles?
Thanks,
Fred
Hi, Fred.
They can be found in the Archives: https://chesscafe.com/the-archives/step-by-step-pdf-archives/
Thanks.
Just wondering. If I pay the $ 50 sign up fee, does that entitle me to all the archives in addition to purchasing $ 50 in merchandise at the Cafe shop?
Fred
Yes, membership allows you to access all the archives and receive a $50 coupon for merchandise. We do accept PayPal.
One last question. I do understand that I may use the $50 to purchase books. I am a big fan of Dan Heisman and have purchased all his newsletters up to # 155 @ .99 cents each. If I go into the archives, is there an additional cost for me to download the others because I would have an annual membership?
Fred
All content in the ChessCafe Archives, including ebooks and PDF documents, is free for download by members.
Thank you for the info