MESON Chess Problem Database

Problem Display
PID: 214540 (8/Q5p1/R3pN2/4k3/6P1/6N1/8/1K6 w - - 0 1)

Gilberg, Charles Alexander

New York Turf, Field and Farm, 1878

8/Q5p1/R3pN2/4k3/6P1/6N1/8/1K6

#2

6 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sd7+?
      • 1...Kd5
        • 2.Qc5#
      • 1...Kf4!
    • 1.Ra5+?
      • 1...Kf4
        • 2.Qf2#
      • 1...Kd6
        • 2.Qc5#
        • 2.Qd7#
      • 1...Kxf6!
    • 1.Rxe6+?
      • 1...Kf4
        • 2.Qe3#
      • 1...Kxe6!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Qd4#
      • 1...Kf4
        • 2.Qe3#
      • 1...Kxf6
        • 2.Qxg7#
      • 1...exf5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
    • Try
      • R(D);CHECK,XP(b)
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);P-FLIGHT,XR(D)
  • Actual
    • S(B);
    • Threat
      • QAB1(F)
    • Vars
      • K(a);S_FLIGHT::QAB1(F)
      • K(a);OGATEB,P_SPINP(b),S_FLIGHT,XS(E)::QAB1(F),XP(c)
      • P(b);XS(B)::QAR2(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).