MESON Chess Problem Database

Problem Display
PID: 27760 (1R2Nq2/R3bk2/2pp2p1/3N4/6P1/8/BB5Q/5K2 w - - 0 1)

Kiss, Janos

2nd Prize, Probleemblad, 1952

1R2Nq2/R3bk2/2pp2p1/3N4/6P1/8/BB5Q/5K2

#2

9 + 6

3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6+
      • 2.Sf4#
    • 1...Kg8+
      • 2.Sdf6#
    • 1...cxd5
      • 2.Bxd5#
  • Tries
    • 1.Rxe7+?
      • 1...Kg8+
        • 2.Sdf6#
        • 2.Sef6#
      • 1...Qxe7!
    • 1.Qf2+?
      • 1...Ke6
        • 2.Sf4#
      • 1...Kg8!
    • 1.Qh7+?
      • 1...Ke6+
        • 2.Sf4#
      • 1...Qg7!
  • Keys
    • 1.Sxd6+!
      • 1...Ke6+
        • 2.Sf6#
      • 1...Kg8+
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(e);CHECK,N_SPINB(d),S_FLIGHT::B(B)+S(F),DCHECK
    • P(a);OGATE,P_SPINP(a),XS(F)::B(B),XP(a)
  • Tries
    • Try
      • R(G);CHECK,XB(d)
      • Refutation
        • Q(f);XR(G)
    • Try
      • Q(D);CHECK
      • Vars
        • K(e);N_SPINB(d),P_PINQ(D),S_FLIGHT::B(B)+S(F),DCHECK
      • Refutation
        • K(e);N_SPINB(d),P_PINQ(D),S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(e);CHECK,N_SPINB(d),S_FLIGHT::B(B)+S(F),DCHECK
      • Refutation
        • Q(f);P_SPINQ(f)
  • Actual
    • S(I);CHECK,XP(b)
    • Vars
      • K(e);CHECK,N_SPINB(d),S_FLIGHT::B(B)+S(F)
      • K(e);CHECK,N_SPINB(d),P_SPINQ(f),S_FLIGHT::B(B)+S(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).