MESON Chess Problem Database

Problem Display
PID: 54703 (5Q2/b2B2B1/3NP1p1/3k2p1/1R1p4/8/3K4/8 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

The Problemist, 2003

5Q2/b2B2B1/3NP1p1/3k2p1/1R1p4/8/3K4/8

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Rb5#
    • 1...Bb8
      • 2.Rb5#
  • Tries
    • 1.Sb7?
      • threat
        • 2.Qf3#
      • 1...Ke4
        • 2.Bc6#
      • 1...g4!
    • 1.Rxd4+?
      • 1...Kc5
        • 2.Sc4#
        • 2.Sc8#
      • 1...Bxd4!
    • 1.Qf4?
      • threat
        • 2.Qe5#
      • 1...Kc5
        • 2.Rb5#
        • 2.Qxd4#
      • 1...gxf4!
    • 1.Qf6?
      • threat
        • 2.Qe5#
      • 1...Kc5
        • 2.Qxd4#
      • 1...Kxd6!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qa8#
      • 1...Kxe4
        • 2.Bc6#
      • 1...Bb8
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT::R1(B)
    • B(e);N_GUARD::R(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB(G)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::B(E)
      • Refutation
        • P(c);
    • Try
      • R(B);CHECK,XP(a)
      • Refutation
        • B(e);XR(B)
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Refutation
        • P(c);XQ(G)
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • K(b);P-FLIGHT::QAB1(G),XP(a)
      • Refutation
        • K(b);P-FLIGHT,XS(C)
  • Actual
    • S(C);
    • Threat
      • QAB(G)
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT,XS(C)::B(E)
      • B(e);N_GUARD::R1(B),XP(a)
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).