MESON Chess Problem Database

Problem Display
PID: 231423 (1b5Q/4R3/6K1/3k4/B4p2/3pp3/8/8 w - - 0 1)

Henriksen, Thorleif Cammillo

Nova Paka, 1927

1b5Q/4R3/6K1/3k4/B4p2/3pp3/8/8

#2

4 + 5

5454 Near Snap 2021
6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qe5#
  • Tries
    • 1.Rd7+?
      • 1...Kc4
        • 2.Qd4#
      • 1...Ke4
        • 2.Bc6#
      • 1...Kc5
        • 2.Qd4#
      • 1...Ke6
        • 2.Qf6#
        • 2.Qe8#
      • 1...Bd6!
  • Keys
    • 1.Re4!
      • threat
        • 2.Qd4#
      • 1...Kxe4
        • 2.Bc6#
      • 1...Kc5
        • 2.Qd4#
      • 1...Kd6
        • 2.Qe5#
      • 1...Be5
        • 2.Qxe5#
      • 1...Ba7
        • 2.Qe5#

This anticipates 103772(1997)

There are these versions: 231424

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT::QAB1(D)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR1(D)
        • K(d);S_FLIGHT::B(A)
        • K(d);P-FLIGHT::QAB1(D)
      • Refutation
        • B(e);P_SPINB(e)
  • Actual
    • R(C);
    • Threat
      • QAR1(D)
    • Vars
      • K(d);S_FLIGHT,XR(C)::B(A)
      • K(d);P-FLIGHT::QAB1(D)
      • B(e);N_GUARD::QAR1(D),XB(e)
      • B(e);N_GUARD::QAR1(D)
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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).