MESON Chess Problem Database

Problem Display
PID: 31180 (5Q2/8/8/2p1p1P1/1N1k4/1P6/P4P2/2K5 w - - 0 1)

Trcala, Stanislav

Dom i Svet, 1902

5Q2/8/8/2p1p1P1/1N1k4/1P6/P4P2/2K5

#2

7 + 3

3437 Stanislav Trcala Sachovy odkaz 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qxc5#
    • 1...e4
      • 2.Qg7#
      • 2.Qf6#
      • 2.Qh8#
  • Tries
    • 1.Qd6+?
      • 1...Kc3
        • 2.Qxc5#
        • 2.Qd2#
      • 1...Ke4!
    • 1.Qf3?
      • threat
        • 2.Sc2#
        • 2.Sc6#
        • 2.Qd3#
        • 2.Qe3#
      • 1...c4
        • 2.Qe3#
      • 1...e4
        • 2.Qf6#
      • 1...cxb4!
    • 1.Qf4+?
      • 1...Kc3
        • 2.Qd2#
        • 2.Qc4#
      • 1...e4
        • 2.Qf6#
      • 1...exf4!
    • 1.Qf7?
      • threat
        • 2.Qc4#
      • 1...Kc3
        • 2.Qc4#
      • 1...c4
        • 2.Qxc4#
      • 1...e4
        • 2.Qf6#
        • 2.Qg7#
      • 1...Ke4!
    • 1.Qd8+?
      • 1...Kc3
        • 2.Qd2#
      • 1...Ke4!
    • 1.Qg8?
      • threat
        • 2.Qc4#
      • 1...Kc3
        • 2.Qc4#
      • 1...c4
        • 2.Qxc4#
      • 1...e4
        • 2.Qg7#
        • 2.Qh8#
      • 1...Ke4!
  • Keys
    • 1.Qc8!
      • 1...Kc3
        • 2.Qxc5#
      • 1...Ke4
        • 2.Qg4#
      • 1...cxb4
        • 2.Qc4#
      • 1...c4
        • 2.Qxc4#
      • 1...e4
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR2(G),XP(b)
  • Tries
    • Try
      • Q(G);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(G);
      • Threat
        • DUALS(4)
      • Vars
        • P(b);::QAB1(G)
        • P(c);OGATEB,SBLOCK::QAB(G)
      • Refutation
        • P(b);XS(E)
    • Try
      • Q(G);CHECK
      • Vars
        • P(c);OGATEB,P_SPINP(c),SBLOCK::QAB(G)
      • Refutation
        • P(c);XQ(G)
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • K(a);S_FLIGHT::QAR1(G)
        • P(b);::QAR1(G),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(G)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • K(a);S_FLIGHT::QAR1(G)
        • P(b);::QAR1(G),XP(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(a);P_SPINP(b),S_FLIGHT::QAR2(G),XP(b)
      • K(a);P-FLIGHT::QAR2(G)
      • P(b);OGATE,XS(E)::QAR1(G)
      • P(b);OGATE::QAR1(G),XP(b)
      • P(c);OGATEB,SBLOCK::QAB(G)
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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).