MESON Chess Problem Database

Problem Display
PID: 95843 (5Q2/8/6PK/B2pk3/3N4/5P2/8/8 w - - 0 1)

Decker, Adolfph L

Rivista Scacchistica Italiana, 1903

5Q2/8/6PK/B2pk3/3N4/5P2/8/8

#2

6 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qb4?
      • 1...Kf6
        • 2.Qd6#
      • 1...Kf4!
    • 1.Qc5?
      • 1...Kf6
        • 2.Qd6#
      • 1...Kf4!
    • 1.Qe7+?
      • 1...Kf4
        • 2.Bc7#
        • 2.Qg5#
      • 1...Kxd4!
    • 1.Qg7+?
      • 1...Kd6
        • 2.Bb4#
        • 2.Qc7#
      • 1...Kf4!
    • 1.Qf7?
      • 1...Kd6
        • 2.Qc7#
      • 1...Kxd4!
    • 1.Qb8+?
      • 1...Kf6
        • 2.Bd8#
        • 2.Qd6#
      • 1...Kxd4!
    • 1.Qc8?
      • 1...Kxd4
        • 2.Qc3#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kf6
        • 2.Qe6#
      • 1...Kf4!
    • 1.Qd8?
      • 1...Kf4
        • 2.Qg5#
      • 1...Kxd4!
  • Keys
    • 1.Qa3!
      • 1...Kxd4
        • 2.Qc3#
      • 1...Kf4
        • 2.Bc7#
      • 1...Kf6
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);
      • Vars
        • K(b);S_FLIGHT::QAR2(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);P_PINP(a)
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAR2(F)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • Q(F);CHECK
      • Refutation
        • K(b);S_FLIGHT,XS(B)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(b);S_FLIGHT::QAB1(F)
      • Refutation
        • K(b);S_FLIGHT,XS(B)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(b);S_FLIGHT,XS(B)
    • Try
      • Q(F);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(B)::QAB1(F)
        • K(b);S_FLIGHT::QAB1(F)
        • K(b);S_FLIGHT::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(b);S_FLIGHT::QAB1(F)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT,XS(B)
  • Actual
    • Q(F);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(B)::QAB1(F)
      • K(b);S_FLIGHT::B(C)
      • K(b);S_FLIGHT::QAR2(F)
HTML5 logo

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).