MESON Chess Problem Database

Problem Display
PID: 46805 (5n2/3P1P2/2Pp2Q1/3kNKR1/q1R2pBr/3PBPr1/2Nb2b1/4n3 w - - 0 1)

Wester, Anders Emil

Tidskrift for Schack, 0000

5n2/3P1P2/2Pp2Q1/3kNKR1/q1R2pBr/3PBPr1/2Nb2b1/4n3

#2

13 + 10

4885 Amatorproblem 1976

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc4
      • 2.dxc4#
    • 1...Se6
      • 2.Qxe6#
    • 1...Sxd7
      • 2.Qe6#
    • 1...Sh7
      • 2.Qe6#
    • 1...dxe5
      • 2.Rc5#
  • Keys
    • 1.Kxf4!
      • threat
        • 2.Qe4#
      • 1...Qxc4+
        • 2.dxc4#
      • 1...Rxf3+
        • 2.Sxf3#
      • 1...Rgxg4+
        • 2.Sxg4#
      • 1...Rhxg4+
        • 2.Sxg4#
      • 1...Bxe3+
        • 2.Sxe3#
      • 1...Sxd3+
        • 2.Qxd3#
      • 1...Se6+
        • 2.Qxe6#
      • 1...Sxg6+
        • 2.Sxg6#
      • 1...dxe5+
        • 2.Rxe5#
      • 1...Bxf3
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • Q(e);OGATE,XR(E)::P(B),XQ(e)
    • S(j);N_GUARD::QAB1(K),XS(j)
    • S(j);N_GUARD,XP(L)::QAB1(K)
    • S(j);N_GUARD::QAB1(K)
    • P(i);N_GUARD,XS(G)::R1(E)
  • Actual
    • K(H);P-FLIGHT,P_SPINB(C),P_SPINR(E),XP(f)
    • Threat
      • QAB1(K)
    • Vars
      • Q(e);CHECK,XR(E)::P(B),XQ(e)
      • R(d);CHECK,XP(D)::R(I)+S(G),XR(d)
      • R(d);CHECK,XB(F)::R(I)+S(G),XR(d)
      • R(g);CHECK,XB(F)::R(I)+S(G),XR(g)
      • B(b);CHECK,P_PINB(F),XB(C)::S(A),XB(b)
      • S(a);CHECK,OGATE,XP(B)::QAR2(K),XS(a)
      • S(j);CHECK,N_GUARD::QAB1(K),XS(j)
      • S(j);CHECK,XQ(K)::R(I)+S(G),XS(j)
      • P(i);CHECK,OGATE,P_SPINP(i),XS(G)::R1(I),XP(i)
      • B(c);XP(D)::R(I)+S(G),XB(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).