MESON Chess Problem Database

Problem Display
PID: 46462 (8/8/5Qn1/2r1n3/5b2/2R1p1kP/6P1/3N1RK1 w - - 0 1)

Wester, Anders Emil

The Hindu, 0000

8/8/5Qn1/2r1n3/5b2/2R1p1kP/6P1/3N1RK1

#2

7 + 6

4885 Amatorproblem 1976

SOLUTION

  • SOUND
  • Sets
    • 1...Bg5
      • 2.Qf2#
    • 1...Bh6
      • 2.Qf2#
    • 1...Sd3
      • 2.Rf3#
    • 1...Sf3+
      • 2.Rxf3#
    • 1...Sc4
      • 2.Rf3#
    • 1...Sg4
      • 2.Rf3#
    • 1...Sc6
      • 2.Rf3#
    • 1...Sd7
      • 2.Rf3#
    • 1...Sf7
      • 2.Rf3#
    • 1...Sh4
      • 2.Qxf4#
    • 1...Se7
      • 2.Qxf4#
    • 1...Sf8
      • 2.Qxf4#
    • 1...Sh8
      • 2.Qxf4#
  • Tries
    • 1.Rxe3+?
      • 1...Sf3+
        • 2.Rfxf3#
        • 2.Rexf3#
      • 1...Bxe3+!
    • 1.Qg5+?
      • 1...Sg4
        • 2.Rf3#
        • 2.Qxg4#
      • 1...Bxg5!
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Sf5#
      • 1...Bxe3+
        • 2.Qf2#
      • 1...Sf3+
        • 2.Rxf3#
      • 1...Sd3
        • 2.Rf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 11
  • Sets
    • B(c);OGATE::QAB1(G)
    • S(e);N_GUARD,N_SPINP(a)::R1(B)
    • S(e);CHECK,N_GUARD,N_SPINP(a)::R1(B),XS(e)
    • S(e);N_GUARD::R1(B)
    • S(f);N_GUARD::QAB1(G),XB(c)
  • Tries
    • Try
      • R(E);CHECK,XP(a)
      • Refutation
        • B(c);CHECK,XR(E)
    • Try
      • Q(G);CHECK
      • Refutation
        • B(c);XQ(G)
  • Actual
    • S(A);XP(a)
    • Threat
      • R(E)+S(A),DCHECK
    • Vars
      • B(c);CHECK,OGATE,P_SPINB(c),XS(A)::QAB1(G)
      • S(e);CHECK,N_GUARD::R1(B),XS(e)
      • S(e);N_GUARD::R1(B)
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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).