MESON Chess Problem Database

Problem Display
PID: 2639 (5Q2/3b2p1/3K4/4R1pn/3kp2B/P3N3/2P5/8 w - - 0 1)

Reed, George A

Source?, 0000

5Q2/3b2p1/3K4/4R1pn/3kp2B/P3N3/2P5/8

#2

7 + 6

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe3
      • 2.Qf2#
  • Tries
    • 1.Kxd7?
      • threat
        • 2.Qc5#
      • 1...Kc3
        • 2.Qb4#
      • 1...Kxe3
        • 2.Qf2#
      • 1...Kxe5
        • 2.Qd6#
      • 1...Sf6+!
    • 1.Rd5+?
      • 1...Kxe3
        • 2.Qf2#
      • 1...Kc3!
  • Keys
    • 1.Kc7!
      • threat
        • 2.Qc5#
      • 1...Kc3
        • 2.Qb4#
      • 1...Kxe3
        • 2.Qf2#
      • 1...Kxe5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,P_SPINP(b),S_FLIGHT,XS(C)::QAB1(G)
  • Tries
    • Try
      • K(F);P-FLIGHT,XB(e)
      • Threat
        • QAB1(G)
      • Vars
        • K(a);S_FLIGHT::QAB1(G)
        • K(a);OGATEB,P_SPINP(b),S_FLIGHT,XS(C)::QAB1(G)
        • K(a);S_FLIGHT,XR(E)::QAB1(G)
      • Refutation
        • S(d);CHECK
    • Try
      • R(E);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(C)::QAB1(G)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • K(F);S_FLIGHT
    • Threat
      • QAB1(G)
    • Vars
      • K(a);S_FLIGHT::QAB1(G)
      • K(a);OGATEB,P_SPINP(b),S_FLIGHT,XS(C)::QAB1(G)
      • K(a);S_FLIGHT,XR(E)::QAB1(G)
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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).