MESON Chess Problem Database

Problem Display
PID: 287459 (7K/8/8/p7/pp2R3/rp1k1P2/pQn5/Nn2B3 w - - 0 1)

Zuk, Henryk

To Mat, 1957

7K/8/8/p7/pp2R3/rp1k1P2/pQn5/Nn2B3

#2

6 + 9

15601 Albrecht-Leiss-Degener Collection 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Sxa1
      • 2.Qe2#
    • 1...Sxe1
      • 2.Qd4#
    • 1...Se3
      • 2.Rd4#
    • 1...Sd4
      • 2.Qxd4#
  • Tries
    • 1.Bxb4?
      • 1...Sxa1
        • 2.Qe2#
      • 1...Sxb4
        • 2.Qd4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sd2
        • 2.Qc3#
      • 1...Se1
        • 2.Qd4#
        • 2.Qe2#
      • 1...Se3
        • 2.Rd4#
      • 1...axb4!
  • Keys
    • 1.Qc1!
      • 1...Sxa1
        • 2.Qc4#
      • 1...Sxe1
        • 2.Qe3#
      • 1...Sd2
        • 2.Qxd2#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sc3
        • 2.Qd2#
      • 1...Sd4
        • 2.Re3#
      • 1...b2
        • 2.Qxc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 4
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE,XS(A)::QAB1(C)
    • S(c);N_GUARD,XB(B)::QAR1(C)
    • S(c);N_GUARD,SBLOCK::R1(E)
    • S(c);N_GUARD::QAR1(C),XS(c)
  • Tries
    • Try
      • B(B);XP(h)
      • Vars
        • S(c);OGATE,XS(A)::QAB1(C)
        • S(c);N_GUARD,XB(B)::QAR1(C)
        • S(a);N_GUARD::QAR1(C),XS(a)
        • S(c);N_GUARD::QAR1(C),XS(c)
        • S(a);N_GUARD::QAR1(C)
        • S(c);N_GUARD,SBLOCK::R1(E)
      • Refutation
        • P(i);XB(B)
  • Actual
    • Q(C);
    • Vars
      • S(c);OGATE,XS(A)::QAB1(C)
      • S(c);N_GUARD,XB(B)::QAR1(C)
      • S(a);N_GUARD::QAR1(C),XS(a)
      • S(c);N_GUARD::QAR1(C),XS(c)
      • S(a);N_GUARD::QAR1(C)
      • S(c);N_GUARD,SBLOCK::R1(E)
      • P(e);N_GUARD::QAB1(C),XS(c)
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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).