MESON Chess Problem Database

Problem Display
PID: 266354 (2Q5/3pRRrB/4N1np/K2N1q2/n3kP2/1b3p2/1pP5/6B1 w - - 0 1)

Thomson, Robert Gavin

Sunday Referee, 1937

(First published on Sun May 9 1937)

2Q5/3pRRrB/4N1np/K2N1q2/n3kP2/1b3p2/1pP5/6B1

#2

10 + 10

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4
      • 2.Sexf4#
    • 1...Qxd5+
      • 2.Sc5#
    • 1...Bxc2
      • 2.Qc4#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Sc5
      • 2.Sc3#
    • 1...Sxf4
      • 2.Sxf4#
    • 1...Sh4
      • 2.Sc7#
    • 1...Se5
      • 2.Sf6#
    • 1...Sh8
      • 2.Sc7#
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qd3#
      • 1...Qxd5+
        • 2.Sc5#
      • 1...Kxd5
        • 2.Sc7#
      • 1...Qxf4
        • 2.Sexf4#
      • 1...Bxc2
        • 2.Qc4#
      • 1...Sxf4
        • 2.Sxf4#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Sc5
        • 2.Sc3#
      • 1...Se5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • Q(f);N_PINS(E),P_SPINS(g),XP(C)::R(G)+S(F),XQ(f)
    • Q(f);CHECK,P_SPINS(g),SBLOCK,XS(E)::R(G)+S(F),DCHECK
    • B(b);N_GUARD,XP(B)::QAR2(J)
    • B(b);N_GUARD::QAR2(J),XB(b)
    • S(d);N_PINS(E)::S(E)
    • S(g);P_SPINQ(f),XP(C)::R(G)+S(F),XS(g)
    • S(g);N_GUARD,P_SPINQ(f)::R(G)+S(F)
    • S(g);N_PINS(E),P_SPINQ(f)::S(E)
  • Actual
    • Q(J);
    • Threat
      • QAB1(J)
    • Vars
      • Q(f);CHECK,P_SPINS(g),SBLOCK,XS(E)::R(G)+S(F),DCHECK
      • K(e);S_CUTQ(f),S_CUTQ(f),S_CUTS(g),S_CUTS(g),S_FLIGHT,XS(E)::S(F)
      • Q(f);N_PINS(E),P_SPINS(g),XP(C)::R(G)+S(F),XQ(f)
      • B(b);N_GUARD,XP(B)::QAR2(J)
      • S(g);P_SPINQ(f),XP(C)::R(G)+S(F),XS(g)
      • B(b);N_GUARD::QAR2(J),XB(b)
      • S(d);N_PINS(E)::S(E)
      • S(g);N_PINS(E),P_SPINQ(f)::S(E)
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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).