MESON Chess Problem Database

Problem Display
PID: 145014 (3K1R1n/1B3bB1/5pnN/2p3Np/2QPPk1b/4p3/8/6R1 w - - 0 1)

Morse, Christopher Jeremy

4th HM., The Problemist, 1969

3K1R1n/1B3bB1/5pnN/2p3Np/2QPPk1b/4p3/8/6R1

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bxg5
      • 2.Qf1#
    • 1...Bxc4
      • 2.Rxf6#
    • 1...Bd5
      • 2.Rxf6#
    • 1...Be8
      • 2.Rxf6#
    • 1...Bg8
      • 2.Rxf6#
    • 1...e2
      • 2.Qc1#
  • Keys
    • 1.e5!
      • threat
        • 2.Sh3#
      • 1...Bxg5
        • 2.Qf1#
      • 1...cxd4
        • 2.Qxd4#
      • 1...fxe5
        • 2.dxe5#
      • 1...fxg5
        • 2.dxc5#
      • 1...e2
        • 2.Qc1#
      • 1...Be6
        • 2.Sxe6#
      • 1...Bd5
        • 2.Rxf6#
      • 1...f5
        • 2.d5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • B(c);N_GUARD,XS(E)::QAR(B)
    • B(h);OGATE,P_SPINP(f),XQ(B)::R(J),XP(f)
    • B(h);OGATE,P_SPINP(f)::R(J),XP(f)
    • P(a);OGATEB::QAB(B)
  • Actual
    • P(D);
    • Threat
      • S(E)
    • Vars
      • B(c);N_GUARD,XS(E)::QAR(B)
      • P(d);OGATE,P_SPINP(d),XP(C)::QAR2(B),XP(d)
      • P(f);OGATE,P_PINS(E),P_SPINB(h),XP(D)::QAR(B)+P(C),XP(f)
      • P(f);P_SPINB(h),XS(E)::QAR(B)+P(C),XP(d)
      • P(a);OGATEB::QAB(B)
      • B(h);N_GUARD,P_SPINP(f)::S(E),XB(h)
      • B(h);OGATE,P_SPINP(f)::R(J),XP(f)
      • P(f);P_PINS(E)::QAR(B)+P(C)
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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).