MESON Chess Problem Database

Problem Display
PID: 176541 (8/1p1b1Rb1/1Rq1k1P1/4p2p/8/B1n3P1/6Q1/7K w - - 0 1)

Masek, Zdenek

Schach-Echo, 1976

8/1p1b1Rb1/1Rq1k1P1/4p2p/8/B1n3P1/6Q1/7K

#2

7 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Rxd6#
    • 1...Se4
      • 2.Qa2#
    • 1...Sd5
      • 2.Qh3#
  • Keys
    • 1.Qf3!
      • threat
        • 2.Re7#
      • 1...Se4
        • 2.Qb3#
      • 1...e4
        • 2.Qf5#
      • 1...Qd6
        • 2.Rxd6#
      • 1...Bf6
        • 2.Rxf6#
      • 1...Bf8
        • 2.Rf6#
      • 1...Sd5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(d);N_PINQ(B),OGATE::R1(E),XQ(d)
    • S(a);N_PINQ(B)::QAB(B)
    • S(a);N_PINQ(B),SBLOCK::QAB(B)
  • Actual
    • Q(B);
    • Threat
      • R1(G)
    • Vars
      • S(a);N_PINQ(B)::QAB(B)
      • P(b);N_PINQ(B)::QAB1(B)
      • Q(d);N_PINQ(B),OGATE::R1(E),XQ(d)
      • B(h);N_GUARD::R1(G),XB(h)
      • B(h);N_GUARD::R1(G)
      • S(a);N_PINQ(B),SBLOCK::QAB1(B)
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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).