MESON Chess Problem Database

Problem Display
PID: 120158 (8/1p1Q1p2/1Pp1pP2/R1PPP2R/3k4/5p2/3K1P2/8 w - - 0 1)

Hostan, Jan

Sachove listy, 1901

8/1p1Q1p2/1Pp1pP2/R1PPP2R/3k4/5p2/3K1P2/8

#2

10 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Ra4#
    • 1...cxd5
      • 2.Qa4#
    • 1...exd5
      • 2.Qg4#
  • Tries
    • 1.Rg5?
      • 1...Ke4
        • 2.Ra4#
      • 1...cxd5
        • 2.Qa4#
      • 1...exd5
        • 2.Qg4#
      • 1...Kc4!
    • 1.Qd6?
      • threat
        • 2.Ra4#
        • 2.Rh4#
      • 1...Ke4
        • 2.Ra4#
      • 1...Kc4!
    • 1.dxc6+?
      • 1...Ke4
        • 2.Ra4#
      • 1...Kc4!
    • 1.dxe6+?
      • 1...Ke4
        • 2.Ra4#
      • 1...Kc4!
  • Keys
    • 1.Kc2!
      • 1...Kc4
        • 2.Rh4#
      • 1...Ke4
        • 2.Ra4#
      • 1...cxd5
        • 2.Qa4#
      • 1...exd5
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::R(C)
    • P(c);OGATE,P_SPINP(c),SBLOCK,XP(E)::QAR(J)
    • P(d);OGATE,P_SPINP(d),SBLOCK,XP(E)::QAR(J)
  • Tries
    • Try
      • R(G);
      • Vars
        • K(b);P-FLIGHT::R(C)
        • P(c);OGATE,P_SPINP(c),SBLOCK,XP(E)::QAR(J)
        • P(d);OGATE,P_SPINP(d),SBLOCK,XP(E)::QAR(J)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::R(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • P(E);CHECK,XP(c)
      • Vars
        • K(b);P-FLIGHT::R(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • P(E);CHECK,XP(d)
      • Vars
        • K(b);P-FLIGHT::R(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • K(b);P-FLIGHT::R(G)
      • K(b);P-FLIGHT::R(C)
      • P(c);OGATE,P_SPINP(c),SBLOCK,XP(E)::QAR(J)
      • P(d);OGATE,P_SPINP(d),SBLOCK,XP(E)::QAR(J)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).