MESON Chess Problem Database

Problem Display
PID: 238955 (1K6/8/1Q6/5P2/p2P4/p1N5/Rqk2P2/n1NRB3 w - - 0 1)

Petite, Efren

4th HM., Buletin Problemistic, 1996

1K6/8/1Q6/5P2/p2P4/p1N5/Rqk2P2/n1NRB3

#2

10 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3?
      • 1...Sb3
        • 2.Sb4#
      • 1...Qxa2!
    • 1.Qb7?
      • 1...Sb3
        • 2.Qe4#
      • 1...Qxa2!
  • Keys
    • 1.Qb5!
      • 1...Qxa2
        • 2.Qe2#
      • 1...Sb3
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Vars
        • S(a);N_PINQ(I),SBLOCK::S(A)
      • Refutation
        • Q(b);N_PINQ(I),N_SPINQ(b),XR(D)
    • Try
      • Q(I);
      • Vars
        • S(a);N_PINQ(I)::QAB(I)
      • Refutation
        • Q(b);N_PINQ(I),N_SPINQ(b),XR(D)
  • Actual
    • Q(I);
    • Vars
      • Q(b);N_PINQ(I),N_SPINQ(b),XR(D)::QAR2(I)
      • S(a);N_PINQ(I)::QAB1(I)
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).