notyetagm: 30 ... a8-a6? <left behind: c8>
 click for larger view30 ... a8-a6? <DEFENDS> the Black c6-knight but <LEAVES BEHIND> the c8-checking square. 31 c7-c8+ g8-f7 <forcing alignment: f7+c6>
 click for larger view31 c7-c8+ then <FORCES> the Black g8-king onto the f7-square with 31 ... g8-f7, within <CHECKING DISTANCE> of the light-squared White c4-knight, and <<<KNIGHTS BECOME UNBELIEVABLY DANGEROUS ONCE THEY ACQUIRE A TACTICAL TARGET (CHECK)>>>. 32 c8x c6! <remove guard: e5> 1-0
 click for larger view32 c8x c6! wins a piece, as capturing the Black c6-knight <REMOVES THE GUARD (ILLUSORY PROTECTION)> of the e5-checking square. (CONT)
32 ... a6x c6 <illusory protection: e5> 33 c4xe5+ <knight fork>
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