MESON Chess Problem Database

Problem Display
PID: 269850 (2r5/4Q1np/4p3/2p1k1P1/2Bp1p1N/5K2/8/8 w - - 0 1)

Tompuri, Ismo

Tehtavaniekka, 2020

2r5/4Q1np/4p3/2p1k1P1/2Bp1p1N/5K2/8/8

#2

5 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rc7
      • 2.Qxc7#
    • 1...Ra8
      • 2.Qxc5#
      • 2.Qc7#
    • 1...Rb8
      • 2.Qxc5#
      • 2.Qc7#
    • 1...Re8
      • 2.Qxc5#
      • 2.Qc7#
    • 1...Rf8
      • 2.Qxc5#
      • 2.Qc7#
    • 1...Rg8
      • 2.Qxc5#
      • 2.Qc7#
    • 1...Rh8
      • 2.Qxc5#
      • 2.Qc7#
    • 1...Sf5
      • 2.Qxe6#
    • 1...Sh5
      • 2.Qxe6#
    • 1...Se8
      • 2.Qxe6#
  • Tries
    • 1.Sg6+?
      • 1...Kf5
        • 2.Bd3#
        • 2.Qf6#
      • 1...hxg6!
    • 1.Qf7?
      • threat
        • 2.Qxf4#
      • 1...Rf8
        • 2.Qc7#
      • 1...Sf5
        • 2.Qxe6#
      • 1...Sh5
        • 2.Qxe6#
      • 1...Kd6!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Qf6#
      • 1...Kxf5
        • 2.Qf6#
      • 1...Sxf5
        • 2.Qxe6#
      • 1...Rf8
        • 2.Qxc5#
      • 1...Sh5
        • 2.Qxe6#
      • 1...Se8
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(h);N_GUARD::QAB(E),XR(h)
    • S(f);N_GUARD::QAR1(E),XP(e)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • P(g);XS(C)
    • Try
      • Q(E);N_PINP(e)
      • Threat
        • QAB1(E),XP(b)
      • Vars
        • R(h);N_GUARD::QAB(E)
        • S(f);N_GUARD::QAR1(E),XP(e)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAB1(E)
    • Vars
      • K(d);N_SPINP(e),P-FLIGHT,XS(C)::QAR1(E)
      • S(f);N_GUARD,XS(C)::QAR1(E),XP(e)
      • R(h);N_GUARD::QAR2(E),XP(c)
      • S(f);N_GUARD::QAR1(E),XP(e)
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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).