MESON Chess Problem Database

Problem Display
PID: 162570 (2qrbn1B/6PR/2rpk1pb/Q3p2n/1PN1p1pP/4PP2/B7/1K3R2 w - - 0 1)

Mechura, Ivan

Sachova skladba, 2012

2qrbn1B/6PR/2rpk1pb/Q3p2n/1PN1p1pP/4PP2/B7/1K3R2

#2

12 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.gxf8S#
  • Tries
    • 1.Qxe5+?
      • 1...Kd7
        • 2.gxf8S#
      • 1...Kf7
        • 2.Sxd6#
      • 1...dxe5!
    • 1.g8Q+?
      • 1...Bf7
        • 2.Qxf7#
      • 1...Kf5!
  • Keys
    • 1.Qd5+!
      • 1...Kxd5
        • 2.Sb6#
      • 1...Kf5
        • 2.fxe4#
      • 1...Kf6
        • 2.gxf8Q#
        • 2.gxf8R#
      • 1...Kd7
        • 2.gxf8S#
      • 1...Ke7
        • 2.g8S#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(g);S_FLIGHT::PXS(m)=S
  • Tries
    • Try
      • Q(I);CHECK,XP(c)
      • Vars
        • K(g);S_FLIGHT::PXS(m)=S
        • K(g);S_FLIGHT::B(C)+S(G),DCHECK,XP(f)
      • Refutation
        • P(f);XQ(I)
    • Try
      • P(J);CHECK
      • Vars
        • B(l);N_GUARD,P_SPINB(l)::QAB1(J),XB(l)
      • Refutation
        • K(g);P_SPINP(c),S_FLIGHT
  • Actual
    • Q(I);CHECK
    • Vars
      • K(g);S_FLIGHT,XQ(I)::B(C)+S(G),DCHECK
      • K(g);P_SPINP(c),S_FLIGHT::R(B)+P(E)DCHECK,XP(a)
      • K(g);P-FLIGHT::PXS(m)=Q
      • K(g);P_SPINP(f),S_FLIGHT::PXS(m)=S
      • K(g);P-FLIGHT::P=S
HTML5 logo

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).