MESON Chess Problem Database

Problem Display
PID: 183653 (1K6/1Q5p/4N2P/4kpR1/2P4P/8/3P4/8 w - - 0 1)

Magini, Fabio

Best Problems, 2018

1K6/1Q5p/4N2P/4kpR1/2P4P/8/3P4/8

#2

8 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Sd4?
      • 1...Kxd4
        • 2.Qd5#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kf6
        • 2.Qg7#
      • 1...Kf4!
    • 1.Sf4?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kf6
        • 2.Qg7#
      • 1...Kxf4!
    • 1.Sd8?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kf6
        • 2.Qg7#
      • 1...Kf4!
    • 1.Sf8?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kf6
        • 2.Qg7#
      • 1...Kf4!
    • 1.Rg6?
      • threat
        • 2.Qd5#
      • 1...Kd6
        • 2.Qc7#
      • 1...hxg6!
    • 1.Qb6?
      • 1...Ke4
        • 2.Qe3#
      • 1...Kf6!
    • 1.Qd7?
      • 1...Ke4
        • 2.Qd5#
      • 1...Kf6!
    • 1.Qf7?
      • 1...Ke4
        • 2.Qxf5#
      • 1...Kd6!
  • Keys
    • 1.Sc5!
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kf6
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT,XS(E)::QAR1(G)
        • K(a);N_SPINP(b),S_FLIGHT::QAB1(G)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • S(E);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAR1(G)
        • K(a);N_SPINP(b),S_FLIGHT::QAB1(G)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT,XS(E)
    • Try
      • S(E);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAR1(G)
        • K(a);N_SPINP(b),S_FLIGHT::QAB1(G)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • S(E);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAR1(G)
        • K(a);N_SPINP(b),S_FLIGHT::QAB1(G)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • R(D);N_PINP(b)
      • Threat
        • QAR1(G)
      • Vars
        • K(a);S_FLIGHT::QAB1(G)
      • Refutation
        • P(c);XR(D)
    • Try
      • Q(G);
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(G)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAB1(G)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAB1(G),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(a);N_SPINP(b),S_FLIGHT::QAR1(G)
      • K(a);N_SPINP(b),S_FLIGHT::S(E)
      • K(a);N_SPINP(b),S_FLIGHT::QAB1(G)
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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).