MESON Chess Problem Database

Problem Display
PID: 263316 (3n4/3p2p1/2ppkBBN/2p2pPn/1PPQ1rp1/3KPp2/2N4b/8 w - - 0 1)

Sumny, Milan

Szachy, 1980

3n4/3p2p1/2ppkBBN/2p2pPn/1PPQ1rp1/3KPp2/2N4b/8

#2

10 + 13

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Bxf5#
    • 1...Sb7
      • 2.Bf7#
    • 1...Sf7
      • 2.Bxf7#
    • 1...d5
      • 2.Qe5#
  • Tries
    • 1.Qe4+?
      • 1...Rxe4
        • 2.Bxf5#
      • 1...fxe4+!
  • Keys
    • 1.bxc5!
      • threat
        • 2.Qxd6#
      • 1...Rxd4+
        • 2.Sxd4#
      • 1...dxc5
        • 2.Qe5#
      • 1...Re4
        • 2.Bxf5#
      • 1...Sb7
        • 2.Bf7#
      • 1...Sf7
        • 2.Bxf7#
      • 1...d5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD::B(I),XP(f)
    • S(m);N_GUARD::B(I)
    • S(m);N_GUARD::B(I),XS(m)
    • P(i);N_GUARD::QAR1(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • R(c);XQ(F)::B(I),XP(f)
      • Refutation
        • P(f);CHECK,XQ(F)
  • Actual
    • P(D);XP(e)
    • Threat
      • QAR1(F),XP(i)
    • Vars
      • R(c);CHECK,XQ(F)::S(A),XR(c)
      • P(i);N_GUARD,XP(D)::QAR1(F)
      • R(c);N_GUARD::B(I),XP(f)
      • S(m);N_GUARD::B(I)
      • S(m);N_GUARD::B(I),XS(m)
      • P(i);N_GUARD::QAR1(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).