MESON Chess Problem Database

Problem Display
PID: 225531 (2NR3Q/pKn4P/3p4/1n1kNp1B/1P1p4/1P1p4/5PrB/8 w - - 0 1)

Hrusik, Stefan

Praca, 1992

2NR3Q/pKn4P/3p4/1n1kNp1B/1P1p4/1P1p4/5PrB/8

#2

11 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Bf3#
    • 1...Ke6
      • 2.Bf7#
    • 1...Se6
      • 2.Bf3#
  • Tries
    • 1.Sg6?
      • threat
        • 2.Qe5#
      • 1...Ke6
        • 2.Sf4#
      • 1...Ke4!
    • 1.Se7+?
      • 1...Ke4
        • 2.Bf3#
      • 1...Ke6!
    • 1.Rxd6+?
      • 1...Ke4
        • 2.Bf3#
      • 1...Sxd6+!
    • 1.Qg8+?
      • 1...Ke4
        • 2.Bf3#
        • 2.Qxg2#
      • 1...Se6
        • 2.Bf3#
        • 2.Qxg2#
      • 1...Rxg8!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Sf6#
      • 1...Ke6
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(e);N_SPINP(g),S_FLIGHT::B(F)
    • S(i);SBLOCK::B(F)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(K)
      • Vars
        • K(e);N_SPINP(g),S_FLIGHT::S(E)
      • Refutation
        • K(e);N_SPINP(g),S_FLIGHT
    • Try
      • S(I);CHECK
      • Vars
        • K(e);N_SPINP(g),S_FLIGHT::B(F)
      • Refutation
        • K(e);N_SPINP(g),S_FLIGHT
    • Try
      • R(J);CHECK,XP(g)
      • Vars
        • K(e);S_FLIGHT::B(F)
      • Refutation
        • S(d);CHECK,XR(J)
    • Try
      • Q(K);CHECK
      • Refutation
        • R(a);XQ(K)
  • Actual
    • S(E);
    • Threat
      • QAR1(K)
    • Vars
      • K(e);N_SPINP(g),S_FLIGHT::S(E)
      • K(e);N_SPINP(g),S_FLIGHT::QAB(K)
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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).