MESON Chess Problem Database

Problem Display
PID: 162431 (4R3/8/8/8/3K2N1/1p6/3k4/1Q1b4 w - - 0 1)

Thomas, Georg

2nd HM., DSK 22. TT, 1941

4R3/8/8/8/3K2N1/1p6/3k4/1Q1b4

#2

4 + 3

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Bc2
      • 2.Qe1#
  • Tries
    • 1.Re1?
      • threat
        • 2.Qxd1#
      • 1...Bxg4
        • 2.Qc1#
      • 1...Be2
        • 2.Qc1#
      • 1...Bc2
        • 2.Qc1#
      • 1...Bf3
        • 2.Qc1#
      • 1...Kxe1!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Qxd1#
      • 1...Bc2
        • 2.Qe1#
      • 1...Be2
        • 2.Se4#
      • 1...Bf3
        • 2.Qb2#
      • 1...Bg4
        • 2.Qb2#
      • 1...Bh5
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(a);OGATE,SBLOCK::QAB1(A)
  • Tries
    • Try
      • R(D);
      • Threat
        • QAR1(A),XB(a)
      • Vars
        • B(a);XS(C)::QAB1(A)
        • B(a);::QAB1(A)
      • Refutation
        • K(b);P_SPINB(a),S_FLIGHT,XR(D)
  • Actual
    • S(C);
    • Threat
      • QAR1(A),XB(a)
    • Vars
      • B(a);OGATE,SBLOCK::QAB1(A)
      • B(a);SBLOCK::S(C)
      • B(a);N_GUARD::QAR2(A)
HTML5 logo

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).