MESON Chess Problem Database

Problem Display
PID: 219072 (8/5B1p/1Q1Pp2P/5N2/4k3/1K4R1/3P4/8 w - - 0 1)

Asper, Amos L

Baltimore American and Commercial Advertiser, 1882

8/5B1p/1Q1Pp2P/5N2/4k3/1K4R1/3P4/8

#2

8 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...exf5
      • 2.Qe3#
  • Tries
    • 1.Se7?
      • threat
        • 2.Qe3#
      • 1...Kf4
        • 2.Qe3#
      • 1...Ke5!
    • 1.Bxe6?
      • threat
        • 2.Qe3#
        • 2.Qd4#
      • 1...Kf4
        • 2.Qe3#
        • 2.Qd4#
      • 1...Ke5!
  • Keys
    • 1.Rg5!
      • 1...Kd3
        • 2.Qe3#
      • 1...Kf3
        • 2.Qe3#
      • 1...Kf4
        • 2.Qe3#
      • 1...Kd5
        • 2.Sg3#
      • 1...Ke5
        • 2.Qd4#
      • 1...exf5
        • 2.Qe3#
      • 1...e5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK,XS(D)::QAR1(E)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(E)
      • Vars
        • K(a);P-FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(H);XP(b)
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(a);S_FLIGHT::QAR1(E)
      • K(a);P-FLIGHT::QAB1(E)
      • K(a);P_SPINP(b),S_FLIGHT::R(C)+S(D)
      • P(b);XS(D)::QAR1(E)
      • P(b);SBLOCK::QAR1(E)
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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).