MESON Chess Problem Database

Problem Display
PID: 141424 (6Q1/B4r1N/8/1B3P1P/4kn2/4NRP1/2P5/7K w - - 0 1)

Thomson, Robert Gavin

2nd Prize, Bristol Mercury, 1890

6Q1/B4r1N/8/1B3P1P/4kn2/4NRP1/2P5/7K

#2

11 + 3

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Qg4?
      • threat
        • 2.Qxf4#
      • 1...Ke5
        • 2.Qxf4#
      • 1...Rxf5!
  • Keys
    • 1.Sc4!
      • 1...Kxf3
        • 2.Sd2#
      • 1...Kd5
        • 2.Sf6#
      • 1...Kxf5
        • 2.Qg6#
      • 1...Rxf5
        • 2.Re3#
      • 1...Rxa7
        • 2.Rxf4#
      • 1...Rxh7
        • 2.Rxf4#
      • 1...Sxh5
        • 2.Bc6#
      • 1...Rf6
        • 2.Rxf4#
      • 1...Rb7
        • 2.Rxf4#
      • 1...Rc7
        • 2.Rxf4#
      • 1...Rd7
        • 2.Rxf4#
      • 1...Re7
        • 2.Rxf4#
      • 1...Rg7
        • 2.Rxf4#
      • 1...Rf8
        • 2.Rxf4#
      • 1...Se2
        • 2.Bc6#
      • 1...Sg2
        • 2.Bc6#
      • 1...Sd3
        • 2.Bc6#
      • 1...Sh3
        • 2.Bc6#
      • 1...Sd5
        • 2.Sg5#
      • 1...Se6
        • 2.Bc6#
      • 1...Sg6
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 21
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(K);P_PINS(b)
      • Threat
        • QAR1(K),XS(b)
      • Vars
        • K(a);N_SPINS(b),P-FLIGHT::QAB1(K),XS(b)
      • Refutation
        • R(c);XP(G)
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT,XR(D)::S(C)
      • K(a);P_SPINR(c),S_FLIGHT::S(J)
      • K(a);OGATEB,P_SPINS(b),S_FLIGHT,XP(G)::QAB1(K)
      • R(c);SBLOCK,XP(G)::R1(D)
      • R(c);XB(I)::R1(D),XS(b)
      • R(c);P_PINP(H),XS(J)::R1(D),XS(b)
      • S(b);N_GUARD,XP(H)::B(F)
      • R(c);::R1(D),XS(b)
      • S(b);N_GUARD::B(F)
      • S(b);SBLOCK::S(J)
HTML5 logo

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).