MESON Chess Problem Database

Problem Display
PID: 224604 (4K3/3p4/3p3b/3Pk1PR/2b1p1p1/1Q2P3/B7/8 w - - 0 1)

Windle, Lee

Nashville Daily American, 1888

4K3/3p4/3p3b/3Pk1PR/2b1p1p1/1Q2P3/B7/8

#2

7 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd5
      • 2.Qxd5#
  • Tries
    • 1.Qb2+?
      • 1...Kf5
        • 2.Qf6#
      • 1...Kxd5!
    • 1.Qc3+?
      • 1...Kf5
        • 2.Qf6#
      • 1...Kxd5!
  • Keys
    • 1.Kf7!
      • threat
        • 2.gxh6#
      • 1...Bxd5+
        • 2.Qxd5#
      • 1...Kxd5
        • 2.Qb5#
      • 1...Kf5
        • 2.gxh6#
      • 1...Bxg5
        • 2.Rxg5#
      • 1...Bg7
        • 2.g6#
      • 1...Bf8
        • 2.g6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(a);OGATE,XP(D)::QAR1(B),XB(a)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT::QAR1(B)
      • Refutation
        • K(d);P-FLIGHT,P_SPINB(a),XP(D)
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT::QAR1(B)
      • Refutation
        • K(d);P-FLIGHT,P_SPINB(a),XP(D)
  • Actual
    • K(G);P_SPINP(D),S_FLIGHT
    • Threat
      • R(F)+P(E),XB(f)
    • Vars
      • B(a);CHECK,OGATE,XP(D)::QAR1(B),XB(a)
      • K(d);OGATEB,P-FLIGHT,P_SPINB(a),XP(D)::QAR2(B)
      • K(d);P-FLIGHT::R(F)+P(E),XB(f)
      • B(f);OGATE,P_SPINB(f),XP(E)::R(F),XB(f)
      • B(f);N_GUARD::R(F)+P(E)
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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).