MESON Chess Problem Database

Problem Display
PID: 203828 (5Q2/1P6/3PpP2/3RPR2/4k1p1/1p2B1P1/1N1P1K2/8 w - - 0 1)

Labai, Zoltan

3rd Prize, Pravda (Bratislava), 1971-1972

5Q2/1P6/3PpP2/3RPR2/4k1p1/1p2B1P1/1N1P1K2/8

#2

12 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Ra5?
      • threat
        • 2.Rf4#
      • 1...exf5
        • 2.d3#
      • 1...Kxf5!
    • 1.Rb5?
      • threat
        • 2.Rf4#
      • 1...exf5
        • 2.d3#
      • 1...Kxf5!
    • 1.Rc5?
      • threat
        • 2.Rf4#
      • 1...exf5
        • 2.d3#
      • 1...Kxf5!
    • 1.Rg5?
      • threat
        • 2.Rd4#
      • 1...exd5
        • 2.d3#
      • 1...Kxd5!
    • 1.Rh5?
      • threat
        • 2.Rd4#
      • 1...exd5
        • 2.d3#
      • 1...Kxd5!
    • 1.Qe7?
      • 1...Kxf5
        • 2.Qh7#
      • 1...exd5
        • 2.Rf4#
      • 1...exf5
        • 2.Rd4#
      • 1...Kxd5!
    • 1.Qc8?
      • 1...Kxd5
        • 2.Qc4#
      • 1...exd5
        • 2.d3#
      • 1...exf5
        • 2.Qc4#
      • 1...Kxf5!
    • 1.Qg8?
      • 1...Kxf5
        • 2.Qh7#
      • 1...exd5
        • 2.Qxg4#
      • 1...exf5
        • 2.d3#
      • 1...Kxd5!
    • 1.Qh8?
      • 1...Kxd5
        • 2.Qh1#
      • 1...Kxf5
        • 2.Qh7#
      • 1...exf5
        • 2.Qh1#
      • 1...exd5!
  • Keys
    • 1.Qh6!
      • 1...Kxd5
        • 2.Qh1#
      • 1...Kxf5
        • 2.Qh7#
      • 1...exd5
        • 2.Qf4#
      • 1...exf5
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);
      • Threat
        • R1(H)
      • Vars
        • P(d);SBLOCK,XR(H)::P(B)
      • Refutation
        • K(b);S_FLIGHT,XR(H)
    • Try
      • R(F);
      • Threat
        • R1(H)
      • Vars
        • P(d);SBLOCK,XR(H)::P(B)
      • Refutation
        • K(b);S_FLIGHT,XR(H)
    • Try
      • R(F);
      • Threat
        • R1(H)
      • Vars
        • P(d);SBLOCK,XR(H)::P(B)
      • Refutation
        • K(b);S_FLIGHT,XR(H)
    • Try
      • R(H);
      • Threat
        • R1(F)
      • Vars
        • P(d);SBLOCK,XR(F)::P(B)
      • Refutation
        • K(b);S_FLIGHT,XR(F)
    • Try
      • R(H);
      • Threat
        • R1(F)
      • Vars
        • P(d);SBLOCK,XR(F)::P(B)
      • Refutation
        • K(b);S_FLIGHT,XR(F)
    • Try
      • Q(L);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(H)::QAB(L)
        • P(d);SBLOCK,XR(F)::R1(H)
        • P(d);SBLOCK,XR(H)::R1(F)
      • Refutation
        • K(b);S_FLIGHT,XR(F)
    • Try
      • Q(L);
      • Vars
        • K(b);S_FLIGHT,XR(F)::QAB1(L)
        • P(d);SBLOCK,XR(F)::P(B)
        • P(d);SBLOCK,XR(H)::QAR2(L)
      • Refutation
        • K(b);P_SPINP(d),S_FLIGHT,XR(H)
    • Try
      • Q(L);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(H)::QAB(L)
        • P(d);SBLOCK,XR(F)::QAR2(L),XP(c)
        • P(d);SBLOCK,XR(H)::P(B)
      • Refutation
        • K(b);P_SPINP(d),S_FLIGHT,XR(F)
    • Try
      • Q(L);
      • Vars
        • K(b);S_FLIGHT,XR(F)::QAB(L)
        • K(b);OGATEB,S_FLIGHT,XR(H)::QAB(L)
        • P(d);SBLOCK,XR(H)::QAB(L)
      • Refutation
        • P(d);XR(F)
  • Actual
    • Q(L);
    • Vars
      • K(b);S_FLIGHT,XR(F)::QAB(L)
      • K(b);OGATEB,S_FLIGHT,XR(H)::QAB(L)
      • P(d);SBLOCK,XR(F)::QAR1(L)
      • P(d);SBLOCK,XR(H)::QAB(L)
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).