MESON Chess Problem Database

Problem Display
PID: 151869 (5R2/7n/4p3/1N2k1qQ/5N2/5P2/P7/R3K3 w Q - 0 1)

Lipton, Michael

2nd HM., Bournemouth, 2013

5R2/7n/4p3/1N2k1qQ/5N2/5P2/P7/R3K3

#2

8 + 4

56 The Problemist 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Sf6
      • 2.Qxg5#
    • 1...Sxf8
      • 2.Qxg5#
  • Tries
    • 1.Kf1?
      • threat
        • 2.Re1#
      • 1...Sxf8
        • 2.Qxg5#
      • 1...Sf6
        • 2.Qxg5#
      • 1...Qf5!
    • 1.Kd2?
      • threat
        • 2.Re1#
      • 1...Sxf8
        • 2.Qxg5#
      • 1...Sf6
        • 2.Qxg5#
      • 1...Qf5!
    • 1.Kf2?
      • threat
        • 2.Re1#
      • 1...Sxf8
        • 2.Qxg5#
      • 1...Sf6
        • 2.Qxg5#
      • 1...Qf5!
    • 1.Rc1?
      • threat
        • 2.Rc5#
      • 1...Sxf8
        • 2.Qxg5#
      • 1...Sf6
        • 2.Qxg5#
      • 1...Qf5!
    • 1.Rd1?
      • threat
        • 2.Sg6#
      • 1...Sxf8
        • 2.Qxg5#
      • 1...Sf6
        • 2.Qxg5#
      • 1...Qxh5!
  • Keys
    • 1.0-0-0!
      • threat
        • 2.Re1#
      • 1...Sxf8
        • 2.Qxg5#
      • 1...Qf5
        • 2.Sg6#
      • 1...Sf6
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD::QAR2(G),XQ(b)
    • S(d);N_GUARD,XR(H)::QAR2(G),XQ(b)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • R(A)
      • Vars
        • S(d);N_GUARD,XR(H)::QAR2(G),XQ(b)
        • S(d);N_GUARD::QAR2(G),XQ(b)
      • Refutation
        • Q(b);
    • Try
      • K(B);P_SPINS(E),S_FLIGHT
      • Threat
        • R(A)
      • Vars
        • S(d);N_GUARD,XR(H)::QAR2(G),XQ(b)
        • S(d);N_GUARD::QAR2(G),XQ(b)
      • Refutation
        • Q(b);N_PINS(E)
    • Try
      • K(B);S_FLIGHT
      • Threat
        • R(A)
      • Vars
        • S(d);N_GUARD,XR(H)::QAR2(G),XQ(b)
        • S(d);N_GUARD::QAR2(G),XQ(b)
      • Refutation
        • Q(b);
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • S(d);N_GUARD,XR(H)::QAR2(G),XQ(b)
        • S(d);N_GUARD::QAR2(G),XQ(b)
      • Refutation
        • Q(b);
    • Try
      • R(A);
      • Threat
        • S(E)
      • Vars
        • S(d);N_GUARD,XR(H)::QAR2(G),XQ(b)
        • S(d);N_GUARD::QAR2(G),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(G)
  • Actual
    • K(B);0-0-0,P_SPINS(E)
    • Threat
      • R(A)
    • Vars
      • S(d);N_GUARD,XR(H)::QAR2(G),XQ(b)
      • Q(b);N_PINS(E)::S(E)
      • S(d);N_GUARD::QAR2(G),XQ(b)
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).