MESON Chess Problem Database

Problem Display
PID: 264235 (8/5Q2/2B3q1/5p1k/R3r2p/2p3PP/2KB4/8 w - - 0 1)

Labsky, Viktor

Prace, 1966

8/5Q2/2B3q1/5p1k/R3r2p/2p3PP/2KB4/8

#2

7 + 6

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Bf3#
      • 2.Rxh4#
    • 1...Re2
      • 2.Bf3#
      • 2.Rxh4#
    • 1...Re5
      • 2.Bf3#
      • 2.Rxh4#
    • 1...Re6
      • 2.Bf3#
      • 2.Rxh4#
    • 1...Re7
      • 2.Bf3#
      • 2.Rxh4#
    • 1...Re8
      • 2.Bf3#
      • 2.Rxh4#
  • Tries
    • 1.Qxf5+?
      • 1...Qg5
        • 2.Qxg5#
      • 1...Qxf5!
    • 1.Qh7+?
      • 1...Qh6
        • 2.Qxh6#
      • 1...Qxh7!
  • Keys
    • 1.Be8!
      • threat
        • 2.Qxg6#
        • 2.Qxf5#
        • 2.Qh7#
      • 1...Qxf7
        • 2.Bxf7#
      • 1...Rxe8
        • 2.Rxh4#
      • 1...cxd2
        • 2.Qxg6#
      • 1...hxg3
        • 2.Qh7#
      • 1...Re3
        • 2.Qxg6#
      • 1...Rf4
        • 2.Qxg6#
      • 1...f4
        • 2.Qxg6#
      • 1...Rg4
        • 2.Qh7#
      • 1...Re5
        • 2.Rxh4#
        • 2.Qxg6#
        • 2.Qh7#
      • 1...Re6
        • 2.Rxh4#
        • 2.Qxf5#
        • 2.Qh7#
      • 1...Re7
        • 2.Rxh4#
        • 2.Qxg6#
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);CHECK,N_PINQ(f),XP(d)
      • Vars
        • Q(f);N_GUARD,P_SPINQ(f)::QAR1(G),XQ(f)
      • Refutation
        • Q(f);XQ(G)
    • Try
      • Q(G);CHECK,N_PINQ(f)
      • Vars
        • Q(f);N_GUARD,P_SPINQ(f)::QAR1(G),XQ(f)
      • Refutation
        • Q(f);XQ(G)
  • Actual
    • B(F);
    • Threat
      • DUALS(3)
    • Vars
      • Q(f);OGATE,XQ(G)::B(F),XQ(f)
      • R(b);OGATE,XB(F)::R1(E),XP(c)
      • P(a);XB(B)::QAB1(G),XQ(f)
      • P(c);XP(C)::QAR2(G)
      • R(b);::QAB1(G),XQ(f)
      • P(d);::QAB1(G),XQ(f)
      • R(b);::QAR2(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).