Chess problem details
 Chess problem diagram
Category: Fairy
Type: h#n

a)diagram     H#4,5*
b)bPa6--a3   H#5*

Magazine: Moskovskij konkurs 2020, Section G, 05.07.2020, Pr.G11
Year of Publishing: 2020
Einstein + PWC

a)diagram            H#4,5*

1.Ka4-b4 Bg8-b3=S  
2.Kb4*b3[+wSb4] Sb4*a6=B[+bPb4]  
3.Kb3-a3 Ba6*d3=R[+bPa6] +  
4.b4-b3   Rd3*b3=Q[+bPd3] #

1...          Bg8-b3=S  
2.a6-a5   Sb3*a5=B[+bPb3]  
3.d3-d2   Ba5*d2=R[+bPa5]  
4.Ka4-a3 Rd2-a2=B
5.a5-a4   Ba2*b3=R[+bPa2] #

b)bPa6->a3      H#5*

1...          Bg8-b3=S  
2.d3-d2   Sb3*d2=B[+bPb3]  
3.a3-a2   Bd2-b4=S  
4.Ka4-a3 Sb4*a2=B[+bPb4]  
5.b3*a2=S[+wBb3] Bb3*a2=R[+bSb3] #

1.Ka4-b4 Bg8-c4=S  
2.Kb4*c4[+wSb4] Sb4*d3=B[+bPb4] +  
3.Kc4-b3 Bd3-b5=S
4.Kb3-a4 Sb5*a3=B[+bPb5]  

In a): Exchange of the place of the black pawns a6 and d3. Checkmates on the same square (b3) by another white pieces. Kozhakin. Chumakov. In b): Chameleon echo, ideal mates, reciprocal captures. Mate by block of the piece captured by the mating move (Davaine).(Author)
Exchange, same square, Chumakov, Kozhakin, chameleon echo, reciprocal capture, Davaine



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