MESON Chess Problem Database

Problem Display
PID: 51106 (3B4/5R1K/6p1/2p2p1b/2P2kP1/2Q5/7P/8 w - - 0 1)

Crake, James

Burnley Express, 1881

3B4/5R1K/6p1/2p2p1b/2P2kP1/2Q5/7P/8

#2

7 + 5

14868 Pirnie Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kxg4
      • 2.Qg3#
  • Tries
    • 1.Bg5+?
      • 1...Ke4
        • 2.Re7#
        • 2.Qe3#
      • 1...Kxg4
        • 2.Qg3#
      • 1...Kxg5!
    • 1.Bc7+?
      • 1...Ke4
        • 2.Re7#
      • 1...Kxg4
        • 2.Qg3#
      • 1...Kg5!
    • 1.Qe3+?
      • 1...Kxg4
        • 2.Qg3#
        • 2.h3#
      • 1...Kxe3!
  • Keys
    • 1.Re7!
      • 1...Kxg4
        • 2.Qg3#
      • 1...Kg5
        • 2.Re4#
      • 1...Bxg4
        • 2.Qe3#
      • 1...fxg4
        • 2.Qf6#
      • 1...g5
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(c),P-FLIGHT,XP(D)::QAR1(B)
  • Tries
    • Try
      • B(G);CHECK
      • Vars
        • K(a);N_SPINP(c),P-FLIGHT,XP(D)::QAR1(B)
      • Refutation
        • K(a);N_SPINP(c),S_FLIGHT,XB(G)
    • Try
      • B(G);CHECK
      • Vars
        • K(a);N_SPINP(c),P-FLIGHT::R(E)
        • K(a);N_SPINP(c),P-FLIGHT,XP(D)::QAR1(B)
      • Refutation
        • K(a);N_SPINP(c),S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);N_SPINP(c),S_FLIGHT,XQ(B)
  • Actual
    • R(E);N_PINP(c)
    • Vars
      • K(a);P-FLIGHT,XP(D)::QAR1(B)
      • K(a);S_FLIGHT::B(G)+R(E)
      • B(d);SBLOCK,XP(D)::QAB1(B)
      • P(c);OGATEB,SBLOCK,XP(D)::QAR2(B)
      • P(e);SBLOCK::QAB1(B)
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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).