It’s Your Move: daily chess puzzle #222

White to play and win (cooked: instead, analyse and assess the position)

Lengyel v Rubinetti, Lugano Olympiad, 1968

Solution

The solution is the obvious 1 Nb7 but I couldn’t break 1…Rb7, for the reason…that White only has a minor advantage.

In the game, Black played the weaker 1..Kb7, which is well met by 2 Qc5 hitting the LPDO Re7 and threatening to sacrifice on b6.

I have attached a game file here with analysis.