MESON Chess Problem Database

Problem Display
PID: 148539 (8/r5nN/1p1k4/1B6/4P2B/2Q3R1/8/1b4K1 w - - 0 1)

White, Alain Campbell

British Chess Magazine, 1901

8/r5nN/1p1k4/1B6/4P2B/2Q3R1/8/1b4K1

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qf6#
    • 1...Sf5
      • 2.Rg6#
  • Tries
    • 1.Bf6?
      • threat
        • 2.Qe5#
        • 2.Qc6#
      • 1...Bxe4
        • 2.Qe5#
      • 1...Rc7
        • 2.Qe5#
      • 1...Re7
        • 2.Qc6#
      • 1...Ke6!
    • 1.Be7+?
      • 1...Ke6
        • 2.Qf6#
      • 1...Kxe7
        • 2.Qf6#
      • 1...Rxe7!
    • 1.Rd3+?
      • 1...Ke6
        • 2.Bc4#
        • 2.Qf6#
      • 1...Bxd3!
    • 1.Qd4+?
      • 1...Ke6
        • 2.Bc4#
        • 2.Qf6#
        • 2.Qd5#
      • 1...Kc7!
  • Keys
    • 1.Rg5!
      • threat
        • 2.Qe5#
      • 1...Ke6
        • 2.Qf6#
      • 1...Ke7
        • 2.Qf6#
      • 1...Re7
        • 2.Qc6#
      • 1...Sf5
        • 2.Rg6#
      • 1...Se6
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT::QAR1(B)
    • S(e);N_GUARD::R(C)
  • Tries
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XP(D)::QAB1(B)
        • R(d);SBLOCK::QAB1(B)
        • R(d);::QAR1(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(E);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
        • K(c);S_FLIGHT,XB(E)::QAB1(B)
      • Refutation
        • R(d);XB(E)
    • Try
      • R(C);CHECK
      • Refutation
        • B(a);XR(C)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(C);
    • Threat
      • QAB1(B)
    • Vars
      • K(c);P-FLIGHT::QAR1(B)
      • K(c);S_FLIGHT::QAB1(B)
      • R(d);SBLOCK::QAR1(B)
      • S(e);N_GUARD::R(C)
      • S(e);SBLOCK::R1(C)
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).