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− | Due to the popularity of [[opening]]s in the 'A' column, it is very common for a [[player]] to have a [[piece]] along the opponent's [[edge]], near the acute corner. Such pieces can work as [[ladder escape]]s or [[switchback]]s. This article summarizes how to use such pieces as ladder escapes or switchbacks.
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− | == Ladders towards a2 ==
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− | This is easy. a2 is a valid [[ladder escape]] for 2nd and 3rd row [[ladder]]s.
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− | == Ladders towards a3 ==
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− | a3 is a valid ladder escape for 2nd row ladders, but not for 3rd row ladders. However, a3 works as a 3rd-to-5th row [[switchback]]. See [[Switchback#A3_switchback|A3 switchback]]. See also [[A3 escape trick]].
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− | == Ladders towards a4 ==
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− | a4 isn't a valid ladder escape for any kind of ladders, but it works both as a 2nd-to-4th row switchback and as a 3rd-to-5th row switchback. See [[Switchback#A4_switchback|A4 switchback]].
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− | === Second row ladders ===
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− | <hex>R6 C8 Vb1 Vb2 Vb3 Vb4 Vh3 Vb5 Vc5 Vd5 Ve5 Ha6 Hb6 Hc6 Hd6 He6 Hd1 Hd2 Sg5</hex>
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− | [[Red (player)|Red]] plays at the star. [[Blue (player)|Blue]] has to play to the left of the star, and Red can start a new ladder from a4 to the left.
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− | === Third row ladders ===
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− | <hex>R7 C8 Vb1 Vb2 Vb3 Vb4 Vh4 Vb5 Vc5 Vd5 Ve5 Ha6 Hb6 Hc6 Hd6 He6 Hd1 Hd2 Sg5 Pg3</hex>
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− | Red first plays at (*). When Blue plays between Red's ladder and this piece, Red plays his next piece at (+).
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− | == Ladders towards a5 ==
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− | a5 isn't a valid ladder escape for any kind of ladders, but it works both as a 2nd-to-4th row switchback and as a 3rd-to-5th row switchback. See [[Switchback#A5_switchback|A5 switchback]].
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− | == Ladders towards a6 ==
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− | a6 isn't a valid ladder escape for any kind of ladders, but given enough space, it works as a 2nd-to-4th row switchback. See [[Switchback#A6_switchback|A6 switchback]].
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− | [[category:ladder]] | + | |