Section A1 Win
1.Nf1+
( 1.Rxb4 ? Qxb4 = )
( 1.Rg2+ ? Kh1 = )
1…Kh1 2.Bg2+ Qxg2 3.Rh6+ !
( 3.Rxg2 ? Rxb6 ! = )
3…Qh3 !
( 3…Kg1 4.Rxg2+ Kxg2 5.Ne3+ Kf3 6.Na6 {/Cc6 +-} )
4.Rgxh3+ !
( 4.Rhxh3+ ? gxh3 5.Rxh3+ Kg2 {/Rg1 =} )
4…gxh3 5.Nc6 !
( 5.Rxh3+ ? Kg2 {/Rg1=} )
5…Ra4 !
( 5…Rf4 6.Ne3 {-Main line} )
6.Ne3 !
{Switchback}
( 6.Rxh3+ ? Kg2 = )
( 6.Ne5 ? Ra1+ = )
( 6.Kb2 ? Kg1 ! 7.Ne3 h2 8.Rg6+ Kf2 = )
6…h2
( 6…Re4 7.Rxh3+ +- )
7.Nd4 !!
{Puante}
( {Try:} 7.Ne5 ? Kg1 8.Rg6+ Kf2 9.Nd1+ Kf1 ! 10.Rf6+ Kg2 11.Rg6+ Kf1
{Positional draw} )
7…Rxd4
( 7…Kg1 8.Rg6+ Kf2 9.Nd1+ Kf1 10.Rf6+ Kg2 11.Ne3+ Kh3 12.Rh6+ +- )
8.Rf6 ! Kg1
( 8…Rg4 9.Nxg4 +- )
9.Rf1#
{model mate with blocking h2}
1-0