MESON Chess Problem Database

Problem Display
PID: 193359 (k3K3/8/1Q6/2PR4/r3p3/8/3q4/8 w - - 0 1)

Palkoska, Emil

1st Prize, Pittsburgh Gazette-Times TT, 1914

k3K3/8/1Q6/2PR4/r3p3/8/3q4/8

#2

4 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Rd8#
    • 1...Qe1
      • 2.Rd8#
    • 1...Qc3
      • 2.Rd8#
    • 1...Qe3
      • 2.Rd8#
    • 1...Qb4
      • 2.Rd8#
    • 1...Qa5
      • 2.Rd8#
    • 1...Qh6
      • 2.Rd8#
    • 1...Qa2
      • 2.Rd8#
    • 1...Qb2
      • 2.Rd8#
    • 1...Qc2
      • 2.Rd8#
    • 1...Qe2
      • 2.Rd8#
    • 1...Qf2
      • 2.Rd8#
    • 1...Qg2
      • 2.Rd8#
  • Tries
    • 1.Rd7?
      • threat
        • 2.Qd8#
        • 2.Qb7#
      • 1...Qb4
        • 2.Rd8#
      • 1...Qf4
        • 2.Qb7#
      • 1...Qa5
        • 2.Rd8#
        • 2.Qb7#
      • 1...Qg5
        • 2.Qb7#
      • 1...Qb2
        • 2.Rd8#
      • 1...Qh2
        • 2.Qb7#
      • 1...Qd5
        • 2.Qd8#
      • 1...Qd6
        • 2.Qb7#
      • 1...Rb4
        • 2.Ra7#
        • 2.Qa7#
      • 1...Ra7
        • 2.Rxa7#
        • 2.Qxa7#
        • 2.Qd8#
      • 1...Qxd7+!
  • Keys
    • 1.c6!
      • threat
        • 2.Qb7#
      • 1...Qb4
        • 2.Rd8#
      • 1...Qb2
        • 2.Rd8#
      • 1...Rb4
        • 2.Ra5#
      • 1...Ra7
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • Q(a);N_GUARD::R(B)
  • Tries
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);N_GUARD::R(B)
        • Q(a);::QAB1(C)
        • Q(a);::QAR(C)
      • Refutation
        • Q(a);CHECK,XR(B)
  • Actual
    • P(A);
    • Threat
      • QAB1(C)
    • Vars
      • Q(a);N_GUARD::R(B)
      • R(b);N_GUARD,S_CUTQ(a)::R(B)
      • R(b);SBLOCK::QAR(C)
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).