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The three split pawns generally win very easily. However, if two pawns can be blocked and a third is by the rim of the chess-board whilst the king lacks sufficient manoeuvring space, unexpected salvation may be possible. One such situation is shown in a study by V. Chekhover (1950).
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Among all blocked positions with connected pawns the least dangerous are those with a backward middle pawn. That is, the weaker side draws even when there is a possibility of a detour from both wings. This was demonstrated by Y. Averbakh in 1954.
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In a similar blocked position the weaker side can save the game only if the pawns are near the rim of the chess-board so the enemy king cannot “sneak in”. This case is shown in the following example (Averbakh, 1954).
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For the weaker side the most unfavourable are those positions where pawns are not blocked along the same diagonal since this restricts the activity of the bishop. In positions with the farther advanced middle pawn, the stronger side wins if it has sufficient manoeuvring room to penetrate to one of the key squares in […]
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When the pawn-chain is one rank closer to the promotion square, the win is quite basic in most cases. An exception to the general rule is shown in the position with a rook’s pawn (Fahrni) .
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If in a similar position the last pawn is separated by at least three files from the rim of the chess-board, Black will win. This situation was also investigated by A. Cheron in 1952.
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4.5.3. Bishop and Three Pawns versus Bishop In endings of opposite-coloured bishops even advantage of three pawns will not always guarantee a sure win. If pawns are not blocked, the stronger side, as a rule, wins easily. However, in positions with blocked pawns there are some prospects of salvation- especially when the king cannot […]
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