MESON Chess Problem Database

Problem Display
PID: 142104 (7q/Bn3r1b/1N1P4/4P1N1/Bp1k1p1n/3p4/p2P1K2/r1R3Q1 w - - 0 1)

Jespersen, Karl Lorenz Jesper

British Chess Magazine 06. Ty., 1890

7q/Bn3r1b/1N1P4/4P1N1/Bp1k1p1n/3p4/p2P1K2/r1R3Q1

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.Rc4#
  • Tries
    • 1.Sd7+?
      • 1...Kd5
        • 2.Bb3#
        • 2.Bc6#
      • 1...Sc5!
    • 1.Qe1?
      • threat
        • 2.Se6#
        • 2.Rc4#
      • 1...Qxe5
        • 2.Rc4#
      • 1...Rxc1
        • 2.Se6#
      • 1...Sxd6
        • 2.Se6#
      • 1...Be4
        • 2.Qxe4#
      • 1...Sc5
        • 2.Rc4#
      • 1...Qf6
        • 2.Rc4#
      • 1...Qe8
        • 2.Rc4#
      • 1...Rf6
        • 2.Rc4#
      • 1...Rc7
        • 2.Se6#
      • 1...Re7
        • 2.Rc4#
      • 1...Bf5
        • 2.Rc4#
      • 1...Sa5
        • 2.Se6#
      • 1...Sd8
        • 2.Rc4#
      • 1...Qc8!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Rd5#
      • 1...Rf1+
        • 2.Kxf1#
      • 1...Kxc5
        • 2.Se6#
      • 1...Qxe5
        • 2.Rc4#
      • 1...Sxc5
        • 2.Qxa1#
      • 1...Be4
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(k);SBLOCK,XP(F)::R1(A)
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • S(h);P_SPINS(h)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(k);XP(F)::R1(A)
        • R(a);XR(A)::S(G)
        • S(h);XP(I)::S(G)
        • B(j);N_GUARD::QAR1(B),XB(j)
        • S(h);::R1(A)
        • Q(k);::R1(A)
        • R(i);::R1(A)
        • R(i);::S(G)
        • B(j);::R1(A)
        • S(h);::S(G)
      • Refutation
        • Q(k);
  • Actual
    • R(A);
    • Threat
      • R1(A)
    • Vars
      • R(a);CHECK::QAB(B)+K(D),XR(a)
      • K(e);S_FLIGHT,XR(A)::S(G)
      • Q(k);SBLOCK,XP(F)::R1(A)
      • S(h);SBLOCK,XR(A)::QAB(B),XR(a)
      • B(j);SBLOCK::S(G)
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).