MESON Chess Problem Database

Problem Display
PID: 224556 (2N5/6Q1/K1p1p3/2pk3r/8/2P5/8/1B6 w - - 0 1)

Windle, Lee

Nashville Daily American, 1888

2N5/6Q1/K1p1p3/2pk3r/8/2P5/8/1B6

#2

5 + 5

564 Manchester Evening News 1926
5454 Near Snap 2020
6490 yacpdb 2020
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qd4#
    • 1...e5
      • 2.Qf7#
      • 2.Qg8#
  • Tries
    • 1.Ba2+?
      • 1...c4
        • 2.Qd4#
      • 1...Ke4!
    • 1.Bd3?
      • threat
        • 2.c4#
      • 1...c4
        • 2.Qd4#
      • 1...e5
        • 2.Qd7#
        • 2.Qf7#
        • 2.Qg8#
      • 1...Re5
        • 2.Qd7#
      • 1...Rh4!
    • 1.Qc7?
      • threat
        • 2.Sb6#
      • 1...e5
        • 2.Qf7#
      • 1...c4
        • 2.Qd6#
      • 1...Kc4!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Sb6#
      • 1...Kc4
        • 2.Ba2#
      • 1...e5
        • 2.Qg8#
      • 1...Re5
        • 2.Qd3#
      • 1...c4
        • 2.Qd6#

This anticipates 175199(1902), 9736(1909)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD::QAR1(D)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • P(a);P_SPINP(a)::QAR1(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(A);
      • Threat
        • P(B)
      • Vars
        • P(a);N_GUARD::QAR1(D)
        • R(c);SBLOCK::QAR2(D)
      • Refutation
        • R(c);
    • Try
      • Q(D);
      • Threat
        • S(E)
      • Vars
        • P(e);OGATEB,SBLOCK::QAB(D)
        • P(a);SBLOCK::QAR1(D)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(D);
    • Threat
      • S(E)
    • Vars
      • K(b);S_FLIGHT::B(A)
      • P(e);OGATEB,SBLOCK::QAB(D)
      • R(c);SBLOCK::QAR2(D)
      • P(a);SBLOCK::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).