MESON Chess Problem Database

Problem Display
PID: 223302 (8/5Q2/7B/4p2P/1N2k3/2p5/8/7K w - - 0 1)

Cook, Eugene Beauharnais

Charleston Sunday News, 1885

8/5Q2/7B/4p2P/1N2k3/2p5/8/7K

#2

5 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd5#
  • Tries
    • 1.Kg1?
      • 1...Kd4
        • 2.Qd5#
      • 1...c2!
    • 1.Kg2?
      • 1...Kd4
        • 2.Qd5#
      • 1...c2!
    • 1.Kh2?
      • 1...Kd4
        • 2.Qd5#
      • 1...c2!
    • 1.Bc1?
      • 1...Kd4
        • 2.Qd5#
      • 1...c2!
    • 1.Bg5?
      • 1...Kd4
        • 2.Qd5#
      • 1...c2!
    • 1.Qe6?
      • threat
        • 2.Qg4#
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf3!
    • 1.Qg6+?
      • 1...Kf3
        • 2.Qg2#
      • 1...Kd4!
    • 1.Qf3+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kxf3!
    • 1.Qb7+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf5!
    • 1.Qg7?
      • threat
        • 2.Qg4#
      • 1...Kf3
        • 2.Qg2#
      • 1...Kf5
        • 2.Qg6#
      • 1...Kd4!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qg4#
      • 1...Kf3
        • 2.Qg2#
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf5
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR1(E)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • P(a);
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • P(a);
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • P(a);
    • Try
      • B(D);
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • P(a);
    • Try
      • B(D);
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • P(a);
    • Try
      • Q(E);P_PINP(c)
      • Threat
        • QAR2(E)
      • Vars
        • K(b);N_SPINP(c),P-FLIGHT::QAR1(E)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAR2(E)
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
  • Actual
    • Q(E);
    • Threat
      • QAR2(E)
    • Vars
      • K(b);S_FLIGHT::QAB1(E)
      • K(b);P-FLIGHT::QAR1(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).