LBB13 on lichess
I've written a free chess book. PDF in my google drive:
drive.google.com/file/d/1Qn5ntiAVuFCNeNfIhSwO68KQTCkIZfZC/view?usp=drive_link
1.d8=R+ Kh4+ 2.Ng2+ Kh3 3.Rd5! Rg5 4.Kf1 Kh2 (4...Rxd5 5.Nf4+) 5.Rxg5 Kh1/h3 6.Rh5#. Any other 4th move by Black gives mate in 1 or 2.
1.d8=R+ Kh4+ 2.Ng2+ Kh3 3.Rd5! Rg5 4.Kf1 Kh2 (4...Rxd5 5.Nf4+) 5.Rxg5 Kh1/h3 6.Rh5#. Any other 4th move by Black gives mate in 1 or 2.
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