MESON Chess Problem Database

Problem Display
PID: 22518 (1b4K1/2p5/2R2Qp1/3kp3/2p5/5b2/2N1P1n1/3r4 w - - 0 1)

Pospisil, Josef

Ceske listy sachove, 1897

1b4K1/2p5/2R2Qp1/3kp3/2p5/5b2/2N1P1n1/3r4

#2

5 + 9

3804 Ceske Melodie 1908

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qxf3#
    • 1...Be4
      • 2.Qe6#
    • 1...e4
      • 2.Sb4#
      • 2.Qe6#
  • Tries
    • 1.Rc5+?
      • 1...Ke4
        • 2.Rxe5#
        • 2.Qxe5#
        • 2.Qxf3#
      • 1...Kxc5!
    • 1.Rxc7?
      • threat
        • 2.Qc6#
      • 1...Ke4
        • 2.Qxf3#
      • 1...e4
        • 2.Sb4#
      • 1...Bxc7!
    • 1.Qf7+?
      • 1...Ke4
        • 2.Qxf3#
      • 1...Kxc6!
    • 1.e4+?
      • 1...Bxe4
        • 2.Qe6#
      • 1...Kxe4!
  • Keys
    • 1.Ra6!
      • threat
        • 2.Qc6#
      • 1...Ke4
        • 2.Qxf3#
      • 1...Kc5
        • 2.Ra5#
      • 1...e4
        • 2.Qg5#
      • 1...c6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(e);S_FLIGHT::QAB1(D),XB(c)
    • B(c);SBLOCK::QAB1(D)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • K(e);P-FLIGHT,XR(C)
    • Try
      • R(C);XP(h)
      • Threat
        • QAB1(D)
      • Vars
        • K(e);S_FLIGHT::QAB1(D),XB(c)
        • P(f);SBLOCK::S(A)
      • Refutation
        • B(i);XR(C)
    • Try
      • Q(D);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(D),XB(c)
      • Refutation
        • K(e);S_FLIGHT,XR(C)
    • Try
      • P(B);CHECK
      • Vars
        • B(c);SBLOCK,XP(B)::QAB1(D)
      • Refutation
        • K(e);S_FLIGHT,XP(B)
  • Actual
    • R(C);
    • Threat
      • QAB1(D)
    • Vars
      • K(e);S_FLIGHT::QAB1(D),XB(c)
      • K(e);P-FLIGHT::R(C)
      • P(f);OGATEB,SBLOCK::QAR(D)
      • P(h);::QAB1(D),XP(h)
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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).