MESON Chess Problem Database

Problem Display
PID: 175058 (k1N5/2rN4/2Pp4/1p6/1K2Q3/8/8/8 w - - 0 1)

Drnek, Josef

Nove parizske mody, 1902

k1N5/2rN4/2Pp4/1p6/1K2Q3/8/8/8

#2

5 + 4

6490 yacpdb 2018
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc6
      • 2.Qxc6#
    • 1...Ra7
      • 2.Scb6#
    • 1...Rb7
      • 2.cxb7#
  • Keys
    • 1.Qd5!
      • 1...Rxc6
        • 2.Qxc6#
      • 1...Rxd7
        • 2.c7#
      • 1...Rxc8
        • 2.Qa2#
      • 1...Ra7
        • 2.Scb6#
      • 1...Rb7
        • 2.cxb7#

Anticipated by 134703(1901)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE,P_SPINR(c),XP(C)::QAB(B),XR(c)
    • R(c);SBLOCK::S(E)
    • R(c);OGATE::P(C),XR(c)
  • Actual
    • Q(B);
    • Vars
      • R(c);OGATE,P_SPINR(c),XP(C)::QAB(B),XR(c)
      • R(c);OGATE,XS(D)::QAB(B)+P(C)
      • R(c);N_GUARD,XS(E)::QAR(B)
      • R(c);SBLOCK::S(E)
      • R(c);OGATE::P(C),XR(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).