MESON Chess Problem Database

Problem Display
PID: 222622 (5q2/7n/2P5/5k2/3B3K/5B2/6p1/2Q2R1b w - - 0 1)

Sweeney, Maude Gertrude

Nashville Daily American, 1884

5q2/7n/2P5/5k2/3B3K/5B2/6p1/2Q2R1b

#2

6 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kg6
      • 2.Bh5#
  • Tries
    • 1.Bg4+?
      • 1...Kg6
        • 2.Bh5#
      • 1...Ke4!
    • 1.Qb1+?
      • 1...Kf4
        • 2.Bxg2#
        • 2.Qe4#
      • 1...Ke6!
    • 1.Qc2+?
      • 1...Kf4
        • 2.Bxg2#
        • 2.Qe4#
      • 1...Ke6!
    • 1.Qc5+?
      • 1...Kf4
        • 2.Bxg2#
        • 2.Be3#
        • 2.Qe5#
      • 1...Ke6
        • 2.Bd5#
      • 1...Kg6
        • 2.Qh5#
      • 1...Qxc5!
  • Keys
    • 1.Qf4+!
      • 1...Kxf4
        • 2.Bxg2#
      • 1...Ke6
        • 2.Re1#
      • 1...Kg6
        • 2.Bh5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::B(C)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(c);S_FLIGHT::B(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::B(C)
        • K(c);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • Q(e);XQ(A)
  • Actual
    • Q(A);CHECK
    • Vars
      • K(c);P-FLIGHT,XQ(A)::R(B)+B(C),XP(b)
      • K(c);S_FLIGHT::R(B)
      • K(c);S_FLIGHT::B(C)
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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).