MESON Chess Problem Database

Problem Display
PID: 206942 (8/B7/1Q6/2pPkP2/6K1/8/B4N2/8 w - - 0 1)

Barbe, Albert

Illustrirte Familien-Journal (Leipzig), 1858

8/B7/1Q6/2pPkP2/6K1/8/B4N2/8

#2

7 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qe6#
  • Tries
    • 1.Kf3?
      • 1...Kd4
        • 2.Qb2#
        • 2.Qf6#
      • 1...c4
        • 2.Qe6#
      • 1...Kxf5!
    • 1.Kg5?
      • threat
        • 2.Qf6#
      • 1...c4
        • 2.Qe6#
      • 1...Kd4!
    • 1.Bb1?
      • 1...Kxd5
        • 2.Qxc5#
      • 1...c4
        • 2.Qe6#
      • 1...Kd4!
    • 1.Bb3?
      • 1...c4
        • 2.Qe6#
      • 1...Kd4!
    • 1.Qc7+?
      • 1...Kf6
        • 2.Se4#
      • 1...Kd4!
    • 1.Qa6?
      • 1...c4
        • 2.Qe6#
      • 1...Kd4!
    • 1.Qc6?
      • 1...c4
        • 2.Qe6#
      • 1...Kd4!
    • 1.Qg6?
      • 1...c4
        • 2.Qe6#
      • 1...Kd4!
    • 1.Qh6?
      • 1...c4
        • 2.Qe6#
      • 1...Kd4!
    • 1.f6?
      • 1...c4
        • 2.Qe6#
      • 1...Kd4!
  • Keys
    • 1.d6!
      • 1...Kd4
        • 2.Qxc5#
      • 1...Kf6
        • 2.Qb2#
      • 1...c4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);::QAR1(F)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • P(a);::QAR1(F)
      • Refutation
        • K(b);P-FLIGHT,XP(E)
    • Try
      • K(C);P-FLIGHT
      • Threat
        • QAB1(F)
      • Vars
        • P(a);::QAR1(F)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(D)::QAR1(F),XP(a)
        • P(a);::QAR1(F)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • B(A);
      • Vars
        • P(a);::QAR1(F)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);S_FLIGHT::S(B)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • P(a);::QAR1(F)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • P(a);::QAR1(F)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • P(a);::QAR1(F)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • P(a);::QAR1(F)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • P(E);
      • Vars
        • P(a);::QAR1(F)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
  • Actual
    • P(D);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAB1(F),XP(a)
      • K(b);S_FLIGHT::QAB(F)
      • P(a);OGATE::QAB1(F)
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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).