MESON Chess Problem Database

Problem Display
PID: 180219 (1Q4b1/3pB2p/r2P1R1K/2p1kBp1/8/4N3/6Nb/3r4 w - - 0 1)

Schlechter, Carl

Deutsches Wochenschach, 1910

1Q4b1/3pB2p/r2P1R1K/2p1kBp1/8/4N3/6Nb/3r4

#2

8 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qb2#
    • 1...Rda1
      • 2.Qb2#
    • 1...Re1
      • 2.Qb2#
    • 1...Rf1
      • 2.Qb2#
    • 1...Rg1
      • 2.Qb2#
    • 1...Rh1
      • 2.Qb2#
  • Tries
    • 1.Re6+?
      • 1...Kd4
        • 2.Qb2#
      • 1...Bxe6
        • 2.Qh8#
      • 1...dxe6!
    • 1.Rg6?
      • threat
        • 2.Bf6#
      • 1...Kd4
        • 2.Qb2#
      • 1...hxg6!
    • 1.Rf8?
      • threat
        • 2.Bf6#
      • 1...Kd4
        • 2.Qb2#
      • 1...Bf7!
  • Keys
    • 1.Rf7!
      • threat
        • 2.Bf6#
      • 1...Kd4
        • 2.Qb2#
      • 1...Bxf7
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • K(d);S_FLIGHT::QAB(H)
    • R(a);N_GUARD::QAB(H)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB(H)
        • B(i);OGATE,XR(E)::QAB(H)
      • Refutation
        • P(g);XR(E)
    • Try
      • R(E);
      • Threat
        • B(G)
      • Vars
        • K(d);S_FLIGHT::QAB(H)
      • Refutation
        • P(h);XR(E)
    • Try
      • R(E);P_SPINP(D)
      • Threat
        • B(G)
      • Vars
        • K(d);S_FLIGHT::QAB(H)
      • Refutation
        • B(i);
  • Actual
    • R(E);P_SPINP(D)
    • Threat
      • B(G)
    • Vars
      • K(d);S_FLIGHT::QAB(H)
      • B(i);OGATE,XR(E)::QAB(H)
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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).