MESON Chess Problem Database

Problem Display
PID: 208728 (8/8/2R1Pp2/8/1Q1pkpN1/5N1P/8/3K4 w - - 0 1)

Brown, Theodore Morris

Buffalo Globe, 1875

8/8/2R1Pp2/8/1Q1pkpN1/5N1P/8/3K4

#2

7 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qb1#
      • 2.Qxd4#
  • Tries
    • 1.Sd2+?
      • 1...Kd3
        • 2.Qa3#
        • 2.Qb1#
        • 2.Qb3#
        • 2.Qc4#
        • 2.Qb5#
      • 1...Kd5
        • 2.Rd6#
        • 2.Qc5#
        • 2.Qd6#
        • 2.Qc4#
        • 2.Qb5#
      • 1...Kf5!
    • 1.Qb3?
      • 1...Kf5
        • 2.Qd3#
      • 1...f5
        • 2.Sd2#
        • 2.Sg5#
        • 2.Sf2#
        • 2.Sf6#
      • 1...d3!
    • 1.Qc4?
      • 1...Kf5
        • 2.Qd3#
      • 1...f5
        • 2.Sd2#
        • 2.Sg5#
      • 1...Kxf3!
    • 1.Qxd4+?
      • 1...Kf5
        • 2.Qd3#
      • 1...Kxf3!
  • Keys
    • 1.Qb7!
      • 1...Kd3
        • 2.Qb1#
      • 1...Kxf3
        • 2.Rc3#
      • 1...Kd5
        • 2.Sxf6#
      • 1...Kf5
        • 2.Qh7#
      • 1...f5
        • 2.Rc3#
      • 1...d3
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • Q(D);N_PINP(a)
      • Vars
        • K(b);S_FLIGHT::QAB(D)
      • Refutation
        • P(a);
    • Try
      • Q(D);
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAB(D)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT,XS(B)
    • Try
      • Q(D);CHECK,XP(a)
      • Vars
        • K(b);S_FLIGHT::QAB(D)
      • Refutation
        • K(b);S_FLIGHT,XS(B)
  • Actual
    • Q(D);N_PINP(a)
    • Vars
      • K(b);S_FLIGHT::QAB(D)
      • K(b);S_FLIGHT,XS(B)::QAB(D)+R(F),DCHECK
      • K(b);S_FLIGHT::S(E),XP(d)
      • P(d);SBLOCK::QAB(D)+R(F)
      • P(a);SBLOCK::QAB(D)+R(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).