MESON Chess Problem Database

Problem Display
PID: 51218 (6Kb/8/8/1p1R1PnN/1Qb1kPB1/3R1p2/2P3q1/8 w - - 0 1)

Wynne, RL

Manchester Guardian, 1954

6Kb/8/8/1p1R1PnN/1Qb1kPB1/3R1p2/2P3q1/8

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qh3
      • 2.Qe1#
    • 1...Qxg4
      • 2.Qe1#
  • Tries
    • 1.Kxh8?
      • threat
        • 2.R5d4#
        • 2.Re5#
      • 1...Qxc2
        • 2.R5d4#
      • 1...Qxg4
        • 2.Re5#
        • 2.Qe1#
      • 1...Qg1
        • 2.Re5#
      • 1...Qf2
        • 2.Re5#
      • 1...Se6
        • 2.Re5#
      • 1...Sf7+!
    • 1.Sf6+?
      • 1...Kxf4
        • 2.Qd6#
      • 1...Bxf6!
    • 1.Qe7+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Se6!
    • 1.Qxc4+?
      • 1...Bd4
        • 2.R5xd4#
        • 2.Re5#
        • 2.Qxd4#
      • 1...bxc4!
  • Keys
    • 1.f6!
      • threat
        • 2.Bf5#
      • 1...Qxg4
        • 2.Qe1#
      • 1...Qh3
        • 2.Qe1#
      • 1...Sh3
        • 2.Qe7#
      • 1...Se6
        • 2.Re5#
      • 1...Sf7
        • 2.R5d4#
      • 1...Sh7
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(a);N_GUARD::QAR(C)
    • Q(a);N_GUARD,XB(E)::QAR(C)
  • Tries
    • Try
      • K(I);N_SPINR(F),P-FLIGHT,XB(g)
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);XP(A)::R1(F)
        • Q(a);::R1(F)
        • S(f);::R1(F)
      • Refutation
        • S(f);CHECK
    • Try
      • S(H);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(D)::QAB(C)
      • Refutation
        • B(g);XS(H)
    • Try
      • Q(C);CHECK,N_PINB(c)
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::QAR1(C),XB(g)
      • Refutation
        • S(f);N_PINR(F),P_PINB(E),P_SPINS(f)
    • Try
      • Q(C);CHECK,N_SPINR(F),XB(c)
      • Refutation
        • P(e);XQ(C)
  • Actual
    • P(G);
    • Threat
      • B(E)
    • Vars
      • Q(a);N_GUARD,XB(E)::QAR(C)
      • Q(a);N_GUARD::QAR(C)
      • S(f);N_GUARD,P_PINB(E)::QAR(C)
      • S(f);N_PINR(F),P_PINB(E)::R1(F)
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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).