MESON Chess Problem Database

Problem Display
PID: 201735 (8/8/p7/pPP5/N2Q4/k7/bRB5/b1nK4 w - - 0 1)

Papp, Istvan

Uj Nemezdek, 1922

8/8/p7/pPP5/N2Q4/k7/bRB5/b1nK4

#2

7 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb2
      • 2.Qxb2#
  • Keys
    • 1.Sc3!
      • 1...Kxb2
        • 2.Sb1#
      • 1...Bxb2
        • 2.Qa4#
      • 1...axb5
        • 2.Sxb5#
      • 1...Bb1
        • 2.Sxb1#
      • 1...Bb3
        • 2.Sb1#
      • 1...Bc4
        • 2.Sb1#
      • 1...Bd5
        • 2.Sb1#
      • 1...Be6
        • 2.Sb1#
      • 1...Bf7
        • 2.Sb1#
      • 1...Bg8
        • 2.Sb1#
      • 1...Se2
        • 2.Rxa2#
      • 1...Sb3
        • 2.Rxa2#
      • 1...Sd3
        • 2.Rxa2#
      • 1...a4
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • B(a);OGATE,XR(B)::QAB1(E),XB(a)
  • Actual
    • S(D);
    • Vars
      • K(d);S_FLIGHT,XR(B)::QAB(E)+S(D)
      • B(a);SBLOCK,XR(B)::QAR1(E)
      • P(f);XP(F)::S(D),XP(f)
      • B(c);N_GUARD::S(D),XB(c)
      • B(c);N_GUARD,P_PINB(C)::S(D)
      • B(c);N_GUARD::S(D)
      • S(b);N_GUARD::R1(B),XB(c)
      • P(e);N_GUARD::QAB1(E)
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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).