MESON Chess Problem Database

Problem Display
PID: 100753 (KBB4Q/8/p1pP1Pb1/2RNkpR1/1n1p3r/3p4/5P2/8 w - - 0 1)

Hostan, Jan

Narodni listy, 1900

KBB4Q/8/p1pP1Pb1/2RNkpR1/1n1p3r/3p4/5P2/8

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.f7#
    • 1...Bh7
      • 2.Qe8#
    • 1...Be8
      • 2.Qxe8#
  • Tries
    • 1.Rxf5+?
      • 1...Ke4
        • 2.Qxh4#
        • 2.f3#
      • 1...Bxf5!
    • 1.d7+?
      • 1...Ke6
        • 2.d8S#
      • 1...Ke4!
  • Keys
    • 1.Bxf5!
      • threat
        • 2.d7#
      • 1...Rxh8
        • 2.f4#
      • 1...Bxf5
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(d);N_GUARD,SBLOCK::QAB(J)+P(F)
    • B(i);N_GUARD::QAR(J)
    • B(i);N_GUARD::QAR(J),XB(i)
  • Tries
    • Try
      • R(D);CHECK,XP(f)
      • Refutation
        • B(i);XR(D)
    • Try
      • P(E);CHECK
      • Vars
        • K(e);N_SPINP(f),P-FLIGHT::P=S
      • Refutation
        • K(e);N_SPINP(f),P-FLIGHT
  • Actual
    • B(I);XP(f)
    • Threat
      • B(H)+P(E)
    • Vars
      • R(d);N_GUARD,P_PINB(H),XQ(J)::P(A)
      • B(i);N_GUARD,P_SPINB(i),XB(I)::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).