MESON Chess Problem Database

Problem Display
PID: 51110 (6N1/3p1p2/3Pkp2/4b3/3R1BP1/n2K4/8/4RB2 w - - 0 1)

Wigan, TK

Manchester Guardian, 1949

6N1/3p1p2/3Pkp2/4b3/3R1BP1/n2K4/8/4RB2

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Rxe5#
  • Tries
    • 1.Kd2?
      • 1...Sc4+
        • 2.Bxc4#
      • 1...Sc2
        • 2.Bc4#
      • 1...Sb5
        • 2.Bc4#
      • 1...f5
        • 2.Rxe5#
      • 1...Sb1+!
  • Keys
    • 1.Ke4!
      • 1...f5+
        • 2.gxf5#
      • 1...Bxd4
        • 2.Kxd4#
      • 1...Bxf4
        • 2.Kxf4#
      • 1...Bxd6
        • 2.Rxd6#
      • 1...Sb1
        • 2.Bc4#
      • 1...Sc2
        • 2.Bc4#
      • 1...Sc4
        • 2.Bxc4#
      • 1...Sb5
        • 2.Bc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • P(d);N_GUARD::R1(A),XB(b)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • S(a);CHECK,N_GUARD::B(B),XS(a)
        • S(a);N_GUARD::B(B)
        • P(d);N_GUARD::R1(A),XB(b)
      • Refutation
        • S(a);CHECK
  • Actual
    • K(C);N_PINB(b),S_FLIGHT
    • Vars
      • P(d);CHECK,OGATE::P(F),XP(d)
      • B(b);XR(D)::R(A)+K(C),XB(b)
      • B(b);XB(E)::R(A)+K(C),XB(b)
      • B(b);OGATE,XP(G)::R1(D),XB(b)
      • S(a);N_GUARD::B(B)
      • S(a);N_GUARD::B(B),XS(a)
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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).