MESON Chess Problem Database

Problem Display
PID: 31209 (3R4/2N4B/3PP3/6P1/1b1k4/p7/P1Q5/6K1 w - - 0 1)

Trcala, Stanislav

Deutsches Wochenschach, 1916

3R4/2N4B/3PP3/6P1/1b1k4/p7/P1Q5/6K1

#2

9 + 3

3437 Stanislav Trcala Sachovy odkaz 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qf2#
    • 1...Ke5
      • 2.Qe4#
  • Tries
    • 1.Sb5+?
      • 1...Ke3
        • 2.Qf2#
      • 1...Ke5
        • 2.Qe4#
        • 2.Qf5#
      • 1...Kd5!
    • 1.Qd3+?
      • 1...Ke5
        • 2.Qe4#
        • 2.Qe3#
      • 1...Kc5!
  • Keys
    • 1.Sa6!
      • 1...Ke3
        • 2.Qf2#
      • 1...Kd5
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...Bxd6
        • 2.Qc5#
      • 1...Bc3
        • 2.Qe4#
      • 1...Be1
        • 2.Qc5#
      • 1...Bd2
        • 2.Qc5#
      • 1...Ba5
        • 2.Qc5#
      • 1...Bc5
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB1(C)
    • K(c);S_FLIGHT::QAR1(C)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(G);
    • Vars
      • K(c);S_FLIGHT::QAB1(C)
      • K(c);P-FLIGHT::QAB1(C)
      • K(c);S_FLIGHT::QAR1(C)
      • B(b);N_GUARD,P_SPINB(b),XP(E)::QAB1(C)
      • B(b);SBLOCK::QAR1(C)
      • B(b);N_GUARD::QAB1(C)
      • B(b);N_GUARD::QAB1(C),XB(b)
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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).