MESON Chess Problem Database

Problem Display
PID: 224490 (8/4K3/3N1Q2/P1kp2nR/2pR4/8/8/2B5 w - - 0 1)

Jespersen, Karl Lorenz Jesper

Philadelphia Times, 1888

8/4K3/3N1Q2/P1kp2nR/2pR4/8/8/2B5

#2

7 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.Rxc4#
    • 1...Sh3
      • 2.Rxc4#
    • 1...Se4
      • 2.Rxc4#
    • 1...Se6
      • 2.Rxc4#
    • 1...Sf7
      • 2.Rxc4#
    • 1...Sh7
      • 2.Rxc4#
  • Tries
    • 1.Qe6?
      • 1...Kxd4
        • 2.Qe3#
      • 1...Kc6
        • 2.Qc8#
      • 1...Sxe6
        • 2.Rxc4#
      • 1...c3
        • 2.Qxd5#
      • 1...Sf3
        • 2.Rxc4#
      • 1...Sh3
        • 2.Rxc4#
      • 1...Se4
        • 2.Rxc4#
      • 1...Sf7
        • 2.Rxc4#
      • 1...Sh7
        • 2.Rxc4#
      • 1...Kb4!
  • Keys
    • 1.Qf3!
      • 1...Kb4
        • 2.Qa3#
      • 1...Kxd4
        • 2.Qe3#
      • 1...Kc6
        • 2.Rxc4#
      • 1...Sxf3
        • 2.Rxc4#
      • 1...c3
        • 2.Qxd5#
        • 2.Qxc3#
      • 1...Sh3
        • 2.Rxc4#
      • 1...Se4
        • 2.Rxc4#
      • 1...Se6
        • 2.Rxc4#
      • 1...Sf7
        • 2.Rxc4#
      • 1...Sh7
        • 2.Rxc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(d);P_SPINP(c)::R1(B),XP(a)
  • Tries
    • Try
      • Q(F);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(B)::QAB1(F)
        • K(b);P-FLIGHT::QAR2(F)
        • S(d);P_SPINP(c),XQ(F)::R1(B),XP(a)
        • P(a);::QAR1(F),XP(c)
        • S(d);P_SPINP(c)::R1(B),XP(a)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAB1(F)
      • K(b);OGATEB,S_FLIGHT,XR(B)::QAB1(F)
      • K(b);P-FLIGHT,P_SPINP(c)::R(B),XP(a)
      • S(d);P_SPINP(c),XQ(F)::R1(B),XP(a)
      • S(d);P_SPINP(c)::R1(B),XP(a)
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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).