MESON Chess Problem Database

Problem Display
PID: 161591 (q7/1r1n4/p1p1p3/2Q1pR2/4k3/4P2B/brpK4/b1N5 w - - 0 1)

Smedley, Don A

Chess, 1956

q7/1r1n4/p1p1p3/2Q1pR2/4k3/4P2B/brpK4/b1N5

#2

6 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...R2b3
      • 2.Qxc6#
    • 1...R7b3
      • 2.Qc4#
    • 1...Bb1
      • 2.Qc4#
      • 2.Qxc6#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Sb6
      • 2.Qxe5#
    • 1...Sf6
      • 2.Qxe5#
    • 1...Sb8
      • 2.Qxe5#
    • 1...Sf8
      • 2.Qxe5#
    • 1...exf5
      • 2.Bg2#
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qd3#
      • 1...Kd5
        • 2.Qd4#
      • 1...exf5
        • 2.Bg2#
      • 1...R2b3
        • 2.Qxc6#
      • 1...R7b3
        • 2.Qc4#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Sc5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(c);S_CUTB(b)::QAB(E),XP(h)
    • R(j);S_CUTB(b)::QAR2(E)
    • B(b);N_GUARD::QAR2(E),XB(b)
    • S(k);N_GUARD::QAR1(E),XP(f)
    • P(i);SBLOCK,XR(F)::B(D)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(e);P_SPINP(f),S_FLIGHT::QAR1(E)
      • P(i);SBLOCK,XR(F)::B(D)
      • R(c);S_CUTB(b)::QAB(E),XP(h)
      • R(j);S_CUTB(b)::QAR2(E)
      • B(b);N_GUARD::QAR2(E),XB(b)
      • S(k);N_GUARD::QAR1(E),XP(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).