Cordingley puzzle 249 #chess
White to play and win (or not, as it turns out)
Worth looking at, even though it is cooked. Finding the best lines for both sides is a good exercise.
Solution
It is fairly trite to see 1 Rf6 Rg3? 2 Rb5+! and not too hard to see that line through to mate. But better to find a stronger defence for black, and I couldn't really break down 1…Rcc7!
In fact, Houdini could break it- I got mesmerised by too many very similar but different lines ( I have realised a few times in this Cordingley journey how hard accuracy is in Q+R attacks). But Houdini suggests an even stronger defence 1…Be6! when black is probably not worse. He has counter threats against the Ng3 and pawn g2, and access to the white king in some, lines on the a2-g8 diagonal.


