MESON Chess Problem Database

Problem Display
PID: 208157 (2Nb2n1/1Q6/1p1P4/2p1kP2/2P1P2P/1P1p1K2/2b1BN2/8 w - - 0 1)

Thornton, George Howard

Buffalo Globe, 1875

2Nb2n1/1Q6/1p1P4/2p1kP2/2P1P2P/1P1p1K2/2b1BN2/8

#2

11 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Sg4#
    • 1...Bf6
      • 2.Qd5#
  • Tries
    • 1.Qa6?
      • threat
        • 2.Qa1#
      • 1...Kd4
        • 2.Qa1#
      • 1...Kf6!
    • 1.Qa8?
      • threat
        • 2.Qa1#
      • 1...Kd4
        • 2.Qa1#
      • 1...Kf6!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Qa1#
      • 1...Kd4
        • 2.Qa1#
      • 1...Kf6
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(d);S_FLIGHT::S(B)
    • B(f);SBLOCK::QAR1(J)
  • Tries
    • Try
      • Q(J);
      • Threat
        • QAB(J)
      • Vars
        • K(d);S_FLIGHT::QAB(J)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(J);
      • Threat
        • QAB(J)
      • Vars
        • K(d);S_FLIGHT::QAB(J)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(J);
    • Threat
      • QAB(J)
    • Vars
      • K(d);S_FLIGHT::QAB(J)
      • K(d);S_FLIGHT::S(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).