Editing Two knights endgame (section)

====Pawn beyond the Troitsky line====
{{Chess diagram small
| tright
| Chéron, 1955

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| White wins with either side to move.
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In this study by [[André Chéron (chess player)|André Chéron]], White wins even though the pawn is well beyond the Troitsky line.<ref>{{Harvcol|Müller|Lamprecht|2001|p=20}}</ref>

Black to move is quicker. With White to move, he must maneuver to [[Triangulation (chess)|give the move to Black]], as follows. 1.Kc3 Kb1 2.Kd2 Ka1 3.Kc1 Ka2 4.Kc2 (White then maneuvers to get the same position with vertical instead of horizontal opposition) 4...Ka1 5.Kb3 Kb1 6.Nb2 Kc1 7.Kc3 Kb1 8.Nd3 Ka1 9.Kc4 Ka2 10.Kb4 Ka1 11.Ka3 Kb1 12.Kb3 (Now White has enough time to bring the blockading N in to generate a mating net in time) 12...Ka1 13.Ne3 g2 14.Nc2+ Kb1 15.Na3+ Ka1 16.Nb4 g1=Q 17.Nbc2#

{{clear}}
{{Chess diagram small
| tright
| Averbakh & Chekhover, position #251 
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| Drawing area marked with "×"
White to play draws. Black to play loses.<ref>{{Harvcol|Averbakh|Chekhover|1977|pp=119–120}}</ref>
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In the situation with Black's rook pawn blockaded on h3, if the black king can enter and remain in the area marked with crosses in the adjacent diagram, the game is a draw. Otherwise, White can force the black king into one of the corners not located in the drawing zone and deliver checkmate. Black cannot be checkmated in the a8-corner because the knight on h2 is too far away to help deliver mate: Black draws by pushing the pawn as soon as White moves the knight on h2. White to play in the diagram can try to prevent Black to enter the drawing zone with '''1.Ke6''', but Black then plays '''1...Kg5''' aiming to attack the knight on h2. White is compelled to stop this with '''2.Ke5''' which allows Black to return to the initial position with '''2...Kg6''', and White has made no progress.<ref>{{Harvcol|Averbakh|Chekhover|1977|pp=119–120}}</ref>
{{clear}}