MESON Chess Problem Database

Problem Display
PID: 203575 (8/p7/B5N1/8/1P6/4kp2/1pQ5/bK6 w - - 0 1)

Renaud, Georges

Uj Nemezdek, 1924

8/p7/B5N1/8/1P6/4kp2/1pQ5/bK6

#2

5 + 5

6490 yacpdb 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd3#
    • 1...f2
      • 2.Qd3#
  • Tries
    • 1.Qd1?
      • 1...Ke4
        • 2.Qd3#
      • 1...f2
        • 2.Qd3#
      • 1...Kf2!
    • 1.Qd2+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kxd2!
    • 1.Qe2+?
      • 1...Kd4
        • 2.Qd3#
        • 2.Qe5#
      • 1...fxe2!
    • 1.Qc3+?
      • 1...Ke4
        • 2.Qe5#
        • 2.Qd3#
      • 1...Kf2!
    • 1.Qc5+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kd2!
  • Keys
    • 1.Qh2!
      • 1...Kd4
        • 2.Qe5#
      • 1...Ke4
        • 2.Qe5#
      • 1...f2
        • 2.Qf4#

This anticipates 245980(1982)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAR1(B)
    • P(d);SBLOCK::QAR1(B)
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(c);P-FLIGHT::QAB1(B)
        • P(d);SBLOCK::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(B)
      • Refutation
        • K(c);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • P(d);XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(c);S_FLIGHT::QAB1(B)
      • K(c);P-FLIGHT::QAR1(B)
      • P(d);::QAB1(B)
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).