MESON Chess Problem Database

Problem Display
PID: 224749 (1Q2N3/2p1N1p1/K3P1R1/4P3/5k2/3P4/3Pr3/3B4 w - - 0 1)

Jespersen, Karl Lorenz Jesper

Wiener Hausfrauen-Zeitung, 1887

1Q2N3/2p1N1p1/K3P1R1/4P3/5k2/3P4/3Pr3/3B4

#2

10 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Rg4#
  • Tries
    • 1.Bxe2?
      • 1...c5
        • 2.Rg4#
      • 1...c6
        • 2.Rg4#
      • 1...Kxe5!
  • Keys
    • 1.Sxc7!
      • 1...Kf3
        • 2.Qf8#
      • 1...Kxe5
        • 2.Sb5#
      • 1...Rxd2
        • 2.Scd5#
      • 1...Rxe5
        • 2.Scd5#
        • 2.Rg4#
      • 1...Re1
        • 2.Scd5#
      • 1...Rf2
        • 2.Scd5#
      • 1...Rg2
        • 2.Scd5#
      • 1...Rh2
        • 2.Scd5#
      • 1...Re3
        • 2.Scd5#
      • 1...Re4
        • 2.Scd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • R(a);SBLOCK,XP(D)::R1(G)
  • Tries
    • Try
      • B(A);XR(a)
      • Vars
        • P(c);::R1(G)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT,XP(D)
  • Actual
    • S(J);XP(c)
    • Vars
      • K(b);P-FLIGHT,P_SPINR(a)::QAR(I)
      • K(b);S_FLIGHT,XP(D)::QAB(I)+S(J)
      • R(a);XP(B)::S(J)
      • R(a);::S(J)
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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).