MESON Chess Problem Database

Problem Display
PID: 214569 (8/2K5/2N1N3/2p2kp1/2P2PR1/2Q4p/4P2P/8 w - - 0 1)

Anonymous

Newark Sunday Call Centennial Ty., 1877

8/2K5/2N1N3/2p2kp1/2P2PR1/2Q4p/4P2P/8

#2

9 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qe5#
      • 2.Qd3#
  • Tries
    • 1.Sg7+?
      • 1...Ke4
        • 2.Qe5#
        • 2.Qd3#
        • 2.Qf3#
        • 2.fxg5#
        • 2.f5#
      • 1...Kxg4
        • 2.Qg3#
      • 1...Kg6!
    • 1.Rxg5+?
      • 1...Ke4
        • 2.Re5#
        • 2.Qe5#
        • 2.Qd3#
        • 2.Qf3#
      • 1...Kxe6!
    • 1.Qe5+?
      • 1...Kxg4
        • 2.Qxg5#
      • 1...Kg6!
    • 1.Qf6+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kxg4
        • 2.Qxg5#
      • 1...Kxf6!
  • Keys
    • 1.Qg7!
      • 1...Ke4
        • 2.Qe5#
      • 1...Kxg4
        • 2.Qxg5#
      • 1...Kxe6
        • 2.Qg6#
      • 1...gxf4
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(c);S_FLIGHT,XR(F)::QAR1(C)
      • Refutation
        • K(c);P_SPINP(d),S_FLIGHT
    • Try
      • R(F);CHECK,XP(d)
      • Refutation
        • K(c);S_FLIGHT,XS(H)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT,XR(F)::QAR1(C),XP(d)
      • Refutation
        • K(c);P_SPINP(d),S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(C)
        • K(c);S_FLIGHT,XR(F)::QAR1(C),XP(d)
      • Refutation
        • K(c);P-FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Vars
      • K(c);S_FLIGHT::QAR1(C)
      • K(c);P_SPINP(d),S_FLIGHT,XR(F)::QAR1(C),XP(d)
      • K(c);S_FLIGHT,XS(H)::QAR2(C)
      • P(d);XP(E)::QAB1(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).