MESON Chess Problem Database

Problem Display
PID: 262786 (8/1K2kp2/3R1R1B/4P3/2P3P1/8/4Q3/8 w - - 0 1)

Kozlowski, Leszek

Szachy, 1968

8/1K2kp2/3R1R1B/4P3/2P3P1/8/4Q3/8

#2

8 + 2

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Rde6+?
      • 1...Kd7
        • 2.Qd1#
        • 2.Qd3#
        • 2.Qd2#
      • 1...Kd8
        • 2.Qd1#
        • 2.Qd3#
        • 2.Qd2#
      • 1...fxe6!
  • Keys
    • 1.e6!
      • threat
        • 2.exf7#
      • 1...Kxd6
        • 2.Bf8#
      • 1...Kxf6
        • 2.e7#
      • 1...Ke8
        • 2.exf7#
      • 1...fxe6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK
      • Refutation
        • P(b);XR(E)
  • Actual
    • P(D);
    • Threat
      • QAR(A)+P(D),XP(b)
    • Vars
      • K(a);N_GUARD,S_FLIGHT,XR(E)::B(G)
      • K(a);OGATE,S_FLIGHT,XR(F)::R(E)+P(D)
      • K(a);P-FLIGHT::QAR(A)+P(D)DCHECK,XP(b)
      • P(b);OGATE,P_SPINP(b),XP(D)::QAR1(A),XP(b)
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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).