Study 29

Árpád Rusz
Internet (Endgame Tablebases Forum)
2006

White wins
Twin B: Qe4->f3

Twin A:

sliding battery

1.Kd8+! [1.Kc8+? Kh6! 2.Qc5 Qg4+ 3.Kc7 Qg7+=] 1...Kg8 [1...Kh6 2.Qc5 Qh4+ (2...Qd3+ 3.Kc7 Qb3 4.Qb6++-) 3.Kc7 Qg3+ 4.Qd6++-] 2.Qb8!

a. 2... Qd4+

sliding battery

3.Kc7+ Kg7 4.Qb7! Qc5+ 5.Kd7! Kf6 6.Qc6+ +-

chameleon echo

b. 2...Qd5+ 2...Kf7 3.Qd6 Qe6 4.Kc7!+-

sliding battery

3.Ke7+ 3.Kc7+? Kf7 4.Qb7 Ke6! 5.Qc6+ Ke5!= 3...Kh7 4.Qc7! Kg6 5.Qd6++-

chameleon echo

Twin B:

1.Kc7!! [1.Ke7? Qg3! 2.Qd7 (2.Kf6+ Kh6=) 2...Qe5+ 3.Kf7 Qf4+! (3...Kh6? 4.Qe6 +-)

chameleon echo

4.Ke6+ Kh8!= (4...Kg8? 5.Qd5!+-); 1.Kd6+? Kh6!= (1...Kg6? 2.Qg1+ Kh7 3.Qh2+ Kg8 4.Qe5 Qf8+ 5.Kc7 Qf7+ 6.Kb6 Qb3+ 7.Kc5 Qc2+ 8.Kd6! Rundlauf 8...Qf2 9.Qd5+ Kh8 10.b3+-) ] 1...Qg3+ [1...Kg8 2.Qb8+ Kg7 3.Qb7!+-] 2.Kb7!! [2.Kc6+? Kg6! (2...Kh6? 3.Qd4 Qg2+ 4.Kc5 Qc2+ 5.Kb4+-) 3.Qd4 Qg2+ 4.Kc5 Qc2+ 5.Kd5 Qb3+ 6.Kc5 Qc2+=] 2...Qb3+ 3.Ka6+ Kg6 4.Qb6+ +-

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