Black: | Rf8, c7, f6, g6, c5, Bh5, Kc4, d3, e3, d2, Ne2 |
White: | Qb8, Ne8, Ne7, Rb5, d5, e5, a4, a3, Ba1, Kd1 |
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1. Tb4+ cxb4 2. ?? Essential discovery: Every rook-move crossing b4 threatens with tempo (2. Db4+! cxb4 3. Txb4+! Kc5 4. Ld4+ Sxd4#) However: 1. Tb3?/Tb2? fxe5! 1. Tb1? fxe5! [2. Db2 Tf3!] 1. Tb2? Kd4? 2. Db4+ c4, best 3. Dxc4+ Kxc4 4. Tb4+ etc.
Solution:
1. a5!! Flight (2. Txc5+ Kxc5 3. Dxc7+! Kb5 4. Dc6+ Kxa5 5. Lc3+ Sxc3#) 1. - c6 Counterflight! Thematic temptation: 2. Tb1? fxe5! Correct T/D-Bahnung, now two choices: 2. Tb3! (3. Db4+ 4. Txb4+ Kc5 5. Ld4+ Sxd4#) fxe5 Reward: 3. Tc3+ Kd4 4. Dxe5+!! Kxe5 5. Tc4+! S~# 3. Lxe5? (4. Tc3+) Tf3! 2. Tb2? now Kd4! fxe5? 3. Sd6+ Kc3 4. Db3+ etc.
Subtle non-standard classic. Two deeply hidden threatplays, each reaching over the full distance, open the "invisible" gates to a fulminant, breathtaking finale.
Special hallmarks: virtually La1 is forcing S# by active moves, in real play unmoved - as battery-rear-piece. Manifold, flexible use of wR as the strategic mastermind.
Theoretically, one could complain a "mate-dual", because 5. Tc4+ allows both 5. - Sc3# and 5. - Sd4#. But in truth this is a successful joke: 5. - Sc3 prevents 6. Tg4 by doublecheck and 5. - Sd4 prevents 6. Tg4 via knight-rook-Grimshaw!
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