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With the pawn on the seventh rank, the stronger side can sometimes end up in the unfavorable position, if the king gets stuck in the corner. K. Richter’s 1910 study shows a typical scenario. White draws on the move because he can prevent the knight from arriving on the square b6. Since the path...
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c) When White plays Bd1: ...
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b) When White plays Bc2: ...
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When the weaker side has multiple fixed pawn weaknesses, the win is achieved the most easily by attacking the farthest pawn which cannot be aided by its king. This case is shown in a study by Baxter, published in 1961. Corresponding squares Black White d7 d3 e6 c2 c8 b1 f7 d1 g8 b3...
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The stronger side may have difficulty infiltrating with the king to the rear of the enemy pawns in blocked positions as well. But if the weaker side has at least two weaknesses, the “lock” may be opened by subtle manoeuvres. A very nice example of forcing the weaker side into zugzwang is shown in...
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In static positions where the weaker side defends by the opposition or correspondence, the reserve tempi play a crucial role. In order for them to be sufficient for a win mainly depends on whether the opponent can create adequate counter-play. This is nicely illustrated in a flawed study by G. Neustadtle, refuted recently by...
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c ) We may easily deduce that also squares g6-d3 are in correspondence since only through them White can orchestrate the double threat towards d4-e3 and f6-g5 respectively. This closes the “triangles of correspondence” 1-2-3. d ) With regard to the access to the triangle of correspondence, White’s surrounding squares c4-c3-c2-d2-e2 as well Black’s...
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b) Due to the threat of capturing the g-pawn the second obvious situation of mutual zugzwang is g5-e3. ...
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a) Due to the threat e5 with the penetration of the king, the first situation of mutual zugzwang is f6-d4. ...
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