MESON Chess Problem Database

Problem Display
PID: 61625 (4Rbbq/3N4/4n1Qp/1Nr2n2/2p1kp1p/4p1p1/1B2P3/6K1 w - - 0 1)

Neale, Harry R

Chess, 1943

4Rbbq/3N4/4n1Qp/1Nr2n2/2p1kp1p/4p1p1/1B2P3/6K1

#2

7 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6
      • 2.Sxf6#
    • 1...Qh7
      • 2.Sf6#
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qf3#
      • 1...Kd5
        • 2.Qf3#
      • 1...f3
        • 2.Qxf3#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sd6
        • 2.Sxc5#
      • 1...Se7
        • 2.Sd6#
      • 1...Sg7
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • Q(m);N_GUARD::S(F),XQ(m)
    • Q(m);N_GUARD::S(F)
  • Actual
    • Q(E);N_PINS(h),P_PINS(i)
    • Threat
      • QAB1(E)
    • Vars
      • K(d);N_SPINS(i),P_SPINS(h),S_FLIGHT::QAB(E)
      • P(e);::QAB1(E),XP(e)
      • S(h);SBLOCK,S_CUTQ(m)::S(D)
      • S(h);S_CUTB(k)::S(F),XR(g)
      • S(h);N_GUARD,N_SPINS(i),S_CUTB(k)::S(D)
      • S(h);S_CUTQ(m)::S(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).