MESON Chess Problem Database

Problem Display
PID: 229787 (3Q3K/5R2/8/1B2B3/3Pk3/2p5/r5n1/1b3N2 w - - 0 1)

Jespersen, Karl Lorenz Jesper

Tidskrift for Schack, 1911

3Q3K/5R2/8/1B2B3/3Pk3/2p5/r5n1/1b3N2

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Qa8#
    • 1...Rc2
      • 2.Qa8#
    • 1...Rd2
      • 2.Qa8#
    • 1...Re2
      • 2.Qa8#
    • 1...Rf2
      • 2.Qa8#
    • 1...Ra8
      • 2.Qxa8#
    • 1...Bd3
      • 2.Bc6#
    • 1...Se1
      • 2.Rf4#
    • 1...Se3
      • 2.Sg3#
      • 2.Rf4#
    • 1...Sf4
      • 2.Rxf4#
    • 1...Sh4
      • 2.Rf4#
  • Tries
    • 1.Bc4?
      • threat
        • 2.Qd5#
      • 1...Sf4
        • 2.Rxf4#
      • 1...Ra8
        • 2.Qxa8#
      • 1...Se3
        • 2.Sg3#
        • 2.Rf4#
      • 1...Ra5!
  • Keys
    • 1.Qg8!
      • 1...Kd5
        • 2.Rf4#
      • 1...Sf4
        • 2.Rxf4#
      • 1...Ra1
        • 2.Qxg2#
      • 1...Rb2
        • 2.Qa8#
      • 1...Rc2
        • 2.Qa8#
      • 1...Rd2
        • 2.Qa8#
      • 1...Re2
        • 2.Qa8#
      • 1...Rf2
        • 2.Qa8#
      • 1...Ra3
        • 2.Qxg2#
      • 1...Ra4
        • 2.Qxg2#
      • 1...Ra5
        • 2.Qxg2#
      • 1...Ra6
        • 2.Qxg2#
      • 1...Ra7
        • 2.Qxg2#
      • 1...Ra8
        • 2.Qxa8#
      • 1...Bc2
        • 2.Qxg2#
      • 1...Bd3
        • 2.Bc6#
      • 1...Se1
        • 2.Rf4#
      • 1...Se3
        • 2.Rf4#
      • 1...Sh4
        • 2.Rf4#
      • 1...c2
        • 2.Qxg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD::QAB(F)
    • R(b);N_GUARD,P_PINQ(F)::QAB(F),XR(b)
    • B(a);SBLOCK::B(C)
    • S(c);N_GUARD::R1(E)
    • S(c);N_GUARD::R1(E),XS(c)
  • Tries
    • Try
      • B(C);
      • Threat
        • QAB1(F)
      • Vars
        • S(c);N_GUARD::R1(E),XS(c)
        • R(b);N_GUARD,P_PINQ(F)::QAB(F),XR(b)
      • Refutation
        • R(b);
  • Actual
    • Q(F);
    • Vars
      • K(e);S_FLIGHT::QAB(F)+R(E)
      • S(c);N_GUARD::R1(E),XS(c)
      • R(b);N_GUARD::QAB(F),XS(c)
      • R(b);N_GUARD::QAB(F)
      • R(b);N_GUARD,P_PINQ(F)::QAB(F),XR(b)
      • B(a);S_CUTR(b)::QAB(F),XS(c)
      • B(a);SBLOCK::B(C)
      • S(c);N_GUARD::R1(E)
      • P(d);S_CUTR(b)::QAB(F),XS(c)
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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).