MESON Chess Problem Database

Problem Display
PID: 264388 (8/1K6/B1Q4p/5R1p/4Pp1p/3Rbk1N/6n1/B4N2 w - - 0 1)

Sovik, Stefan

Die Schwalbe, 2022

8/1K6/B1Q4p/5R1p/4Pp1p/3Rbk1N/6n1/B4N2

#2

9 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Sg1+?
      • 1...Kg4
        • 2.Qg6#
      • 1...Kf2!
    • 1.Rxe3+?
      • 1...Kg4
        • 2.Sh2#
        • 2.Sf2#
        • 2.Qg6#
      • 1...Sxe3!
    • 1.Qd7?
      • 1...Ke2
        • 2.Rxe3#
      • 1...Kxe4
        • 2.Qd5#
      • 1...Kg4
        • 2.Rxf4#
      • 1...Se1!
    • 1.Qg6?
      • 1...Kxe4
        • 2.Rxf4#
      • 1...Se1
        • 2.Rxe3#
      • 1...Ke2!
  • Keys
    • 1.Qc2!
      • 1...Kxe4
        • 2.Rxe3#
      • 1...Kg4
        • 2.Qxg2#
      • 1...Se1
        • 2.Rxf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(c);N_GUARD,N_SPINB(b),N_SPINP(d),S_FLIGHT::QAR2(H)
      • Refutation
        • K(c);N_SPINB(b),P-FLIGHT
    • Try
      • R(C);CHECK,XB(b)
      • Refutation
        • S(a);XR(C)
    • Try
      • Q(H);
      • Vars
        • K(c);N_GUARD,N_SPINB(b),N_SPINP(d),S_FLIGHT::B(G)+R(C),DCHECK,XB(b)
        • K(c);N_SPINB(b),N_SPINP(d),OGATEB,S_FLIGHT,XP(E)::QAB1(H)
        • K(c);N_GUARD,N_SPINB(b),N_SPINP(d),S_FLIGHT::QAB(H)+R(F),DCHECK,XP(d)
      • Refutation
        • S(a);
    • Try
      • Q(H);
      • Vars
        • K(c);N_GUARD,N_SPINB(b),N_SPINP(d),S_FLIGHT,XP(E)::QAB(H)+R(F),DCHECK,XP(d)
        • S(a);N_GUARD::R1(C),XB(b)
      • Refutation
        • K(c);N_SPINB(b),N_SPINP(d),S_FLIGHT
  • Actual
    • Q(H);
    • Vars
      • K(c);N_GUARD,N_SPINB(b),N_SPINP(d),S_FLIGHT,XP(E)::QAB(H)+R(C),DCHECK,XB(b)
      • K(c);N_GUARD,N_SPINB(b),N_SPINP(d),S_FLIGHT::QAR2(H),XS(a)
      • S(a);N_GUARD::R1(F),XP(d)
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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).