MESON Chess Problem Database

Problem Display
PID: 157729 (8/3N4/3p4/5PK1/3rk3/1PQp1p2/3P4/8 w - - 0 1)

Palkoska, Emil

Besedy lidu, 1893

8/3N4/3p4/5PK1/3rk3/1PQp1p2/3P4/8

#2

6 + 5

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Sf6#
    • 1...Rb4
      • 2.Sf6#
    • 1...Rc4
      • 2.Sf6#
      • 2.Qxc4#
    • 1...Rd5
      • 2.Sf6#
  • Tries
    • 1.Qc6+?
      • 1...d5
        • 2.Qe6#
      • 1...Rd5!
  • Keys
    • 1.Qa1!
      • 1...Kd5
        • 2.Qa8#
      • 1...f2
        • 2.Qh1#
      • 1...Ra4
        • 2.Sf6#
      • 1...Rb4
        • 2.Sf6#
      • 1...Rc4
        • 2.Sf6#
      • 1...Rd5
        • 2.Sf6#
      • 1...d5
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(c);::S(F)
    • R(c);P_PINP(D)::S(F)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • P(e);OGATE,P_SPINP(e)::QAR2(C)
      • Refutation
        • R(c);P_PINP(D),P_SPINR(c)
  • Actual
    • Q(C);
    • Vars
      • K(d);S_FLIGHT::QAB(C)
      • P(b);OGATEB::QAB(C)
      • R(c);::S(F)
      • R(c);P_PINP(D)::S(F)
      • P(e);SBLOCK::QAR(C)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).