MESON Chess Problem Database

Problem Display
PID: 179706 (8/K2Q3B/1P6/3N4/PBk5/1n1N1P2/2pPn3/1R2r1q1 w - - 0 1)

Kopnin, Aleksey Grigorevich

Vecherni Chelyabinsk, 1981

8/K2Q3B/1P6/3N4/PBk5/1n1N1P2/2pPn3/1R2r1q1

#2

11 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Se3#
    • 1...Qh2
      • 2.Se3#
    • 1...Qe3
      • 2.Sxe3#
    • 1...Qd4
      • 2.Qb5#
    • 1...Qxb6+
      • 2.Sxb6#
    • 1...Qf1
      • 2.Se3#
    • 1...Qh1
      • 2.Se3#
    • 1...Qg2
      • 2.Se3#
    • 1...Qg3
      • 2.Se3#
    • 1...Qg4
      • 2.Se3#
    • 1...Qg6
      • 2.Se3#
    • 1...Qg7
      • 2.Se3#
    • 1...Qg8
      • 2.Se3#
    • 1...Sed4
      • 2.Sb2#
    • 1...Sbd4
      • 2.Se5#
  • Keys
    • 1.Bg8!
      • threat
        • 2.Se3#
      • 1...Qxb6+
        • 2.Sxb6#
      • 1...Kxd3
        • 2.Sf4#
      • 1...Kd4
        • 2.Sc3#
        • 2.Se3#
        • 2.S5f4#
        • 2.Sf6#
        • 2.Sc7#
        • 2.Se7#
      • 1...Qe3
        • 2.Sxe3#
      • 1...Qd4
        • 2.Qb5#
      • 1...Sed4
        • 2.Sb2#
      • 1...Sbd4
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • K(f);N_PINP(H),P-FLIGHT::QAR(J)+S(G)
    • Q(b);N_GUARD,N_PINP(H)::S(G)
    • Q(b);N_GUARD::S(G),XQ(b)
    • Q(b);SBLOCK::QAB1(J)
    • Q(b);CHECK,XP(H)::S(G),XQ(b)
    • Q(b);N_GUARD,N_PINP(H),P_PINQ(J)::S(G)
    • S(d);N_PINP(H),SBLOCK::S(C)
    • S(e);N_PINP(H),SBLOCK::S(C)
  • Actual
    • B(K);
    • Threat
      • B(K)+S(G),DCHECK
    • Vars
      • Q(b);CHECK,XP(H)::B(K)+S(G),DCHECK,XQ(b)
      • K(f);S_FLIGHT,XS(C)::QAR(J)+S(G),DCHECK
      • Q(b);::B(K)+S(G),DCHECK,XQ(b)
      • Q(b);SBLOCK::QAB1(J)
      • S(d);N_PINP(H),SBLOCK::S(C)
      • S(e);N_PINP(H),SBLOCK::S(C)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).