MESON Chess Problem Database

Problem Display
PID: 225569 (2n2q2/B2Bp3/2R5/3k1bR1/4p2p/6br/K1NP2Q1/8 w - - 0 1)

Krehel, Filip

Praca, 1954

2n2q2/B2Bp3/2R5/3k1bR1/4p2p/6br/K1NP2Q1/8

#2

8 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Sb4#
    • 1...Sd6
      • 2.Rc5#
    • 1...e5
      • 2.Se3#
  • Tries
    • 1.Rxf5+?
      • 1...Be5
        • 2.Sb4#
      • 1...e5
        • 2.Se3#
      • 1...Qxf5!
  • Keys
    • 1.d3!
      • threat
        • 2.Qxe4#
      • 1...Ke5
        • 2.Qxe4#
      • 1...Be5
        • 2.Sb4#
      • 1...Sd6
        • 2.Rc5#
      • 1...e5
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(a);N_SPINB(f),SBLOCK::S(B)
    • S(h);SBLOCK::R1(F)
    • P(g);N_SPINB(f),SBLOCK::S(B)
  • Tries
    • Try
      • R(E);CHECK,XB(f)
      • Vars
        • B(a);P_SPINB(a)::S(B)
        • P(g);::S(B)
      • Refutation
        • Q(i);XR(E)
  • Actual
    • P(C);
    • Threat
      • QAB1(D),XP(c)
    • Vars
      • K(e);N_SPINP(c),P-FLIGHT::QAR1(D),XP(c)
      • B(a);N_SPINB(f),SBLOCK::S(B)
      • S(h);SBLOCK::R1(F)
      • P(g);N_SPINB(f),SBLOCK::S(B)
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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).