MESON Chess Problem Database

Problem Display
PID: 193471 (2r3b1/8/3pP3/1npBk2p/2PN2P1/3p2P1/1b3P2/6KQ w - - 0 1)

Stanek, Tomas

Pravo lidu, 1915

2r3b1/8/3pP3/1npBk2p/2PN2P1/3p2P1/1b3P2/6KQ

#2

9 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...hxg4
      • 2.Qh8#
  • Tries
    • 1.Qf3?
      • threat
        • 2.Qf4#
      • 1...Kxd4
        • 2.Qf6#
      • 1...Rf8
        • 2.Sc6#
      • 1...Bc1!
    • 1.Qxh5+?
      • 1...Kxd4
        • 2.Qh8#
      • 1...Kf6!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Sf3#
      • 1...Kxd4
        • 2.Qf6#
      • 1...Bxd4
        • 2.Qg5#
      • 1...Sxd4
        • 2.f4#
      • 1...cxd4
        • 2.Qg5#
        • 2.f4#
      • 1...hxg4
        • 2.Qh8#
      • 1...Rf8
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(f);OGATE,XP(G)::QAB(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(e);S_FLIGHT,XS(F)::QAB(B)
        • R(h);N_GUARD::S(F)
      • Refutation
        • B(a);
    • Try
      • Q(B);CHECK,XP(f)
      • Vars
        • K(e);S_FLIGHT,XS(F)::QAB(B)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • S(F)
    • Vars
      • K(e);S_FLIGHT,XS(F)::QAB(B)
      • B(a);P_PINP(C),SBLOCK,XS(F)::QAR2(B)
      • S(c);SBLOCK,XS(F)::P(C)
      • P(f);OGATE,XP(G)::QAB(B)
      • R(h);N_GUARD::S(F)
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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).