MESON Chess Problem Database

Problem Display
PID: 41484 (R4b2/3kp1p1/1K1P4/5P2/5B1R/7B/8/8 w - - 0 1)

Stubbs, Arthur Goodwin

Nottinghamshire Guardian, 1894

R4b2/3kp1p1/1K1P4/5P2/5B1R/7B/8/8

#2

7 + 4

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...exd6
      • 2.f6#
    • 1...e5
      • 2.fxe5 ep#
    • 1...e6
      • 2.fxe6#
  • Tries
    • 1.dxe7?
      • threat
        • 2.f6#
        • 2.e8Q#
      • 1...Bxe7
        • 2.f6#
      • 1...g5
        • 2.e8Q#
      • 1...Kxe7!
  • Keys
    • 1.Rh7!
      • 1...exd6
        • 2.f6#
      • 1...e5
        • 2.fxe5 ep#
      • 1...g5
        • 2.fxg5 ep#
      • 1...e6
        • 2.fxe6#
      • 1...g6
        • 2.fxg6#
        • 2.f6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD,XP(F)::B(A)+P(D)
    • P(b);OGATE::P(D),XP(b),EP
    • P(b);OGATE::P(D),XP(b)
  • Tries
    • Try
      • P(F);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(d);XP(F)::B(A)+P(D)
        • P(c);::P=Q
      • Refutation
        • K(a);P-FLIGHT,XP(F)
  • Actual
    • R(C);
    • Vars
      • P(b);N_GUARD,P_SPINP(c),XP(F)::B(A)+P(D)
      • P(b);OGATE,P_SPINP(c)::P(D),XP(b),EP
      • P(c);OGATE,P_SPINP(b)::B(A)+P(D),XP(c),EP
      • P(b);OGATE,P_SPINP(c)::P(D),XP(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).