MESON Chess Problem Database

Problem Display
PID: 208130 (8/1Q6/p7/K7/3k4/3N4/3BB3/8 w - - 0 1)

Carpenter, George Edward

Carpenter's Chess Problems, 1886

8/1Q6/p7/K7/3k4/3N4/3BB3/8

#2

5 + 2

6490 yacpdb 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Ka4?
      • 1...Kc4
        • 2.Qe4#
      • 1...a5!
    • 1.Sb4?
      • threat
        • 2.Qd5#
      • 1...Kc5
        • 2.Qd5#
        • 2.Qb6#
      • 1...Ke5!
    • 1.Sf4?
      • threat
        • 2.Qd5#
      • 1...Kc5
        • 2.Qd5#
        • 2.Qb6#
      • 1...Ke5!
    • 1.Bf3?
      • threat
        • 2.Qe4#
        • 2.Qd5#
      • 1...Kc4
        • 2.Qd5#
      • 1...Kxd3!
    • 1.Qb5?
      • 1...Ke4
        • 2.Qe5#
      • 1...axb5!
    • 1.Qc7?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kd5!
  • Keys
    • 1.Bd1!
      • 1...Kxd3
        • 2.Qd5#
      • 1...Kc4
        • 2.Qe4#

This anticipates 4968(1895), 176183(1966), 161691(1989), 28619(1992)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR2(E)
      • Refutation
        • P(b);
    • Try
      • S(C);
      • Threat
        • QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Threat
        • QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
    • Try
      • Q(E);
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • P(b);XQ(E)
    • Try
      • Q(E);
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(B);
    • Vars
      • K(a);P-FLIGHT,XS(C)::QAR2(E)
      • K(a);P-FLIGHT::QAR2(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).