MESON Chess Problem Database

Problem Display
PID: 62355 (2N5/Q2n1nP1/2pqk1P1/4P2N/3R2P1/3P1R2/8/7K w - - 0 1)

Knuppert, Hugo

Il Due Mosse, 1958

2N5/Q2n1nP1/2pqk1P1/4P2N/3R2P1/3P1R2/8/7K

#2

11 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Re3#
    • 1...Qxe5
      • 2.Qxd7#
    • 1...Sdxe5
      • 2.Rf6#
    • 1...Sfxe5
      • 2.Rxd6#
  • Tries
    • 1.Rxd6+?
      • 1...Kxe5
        • 2.Re3#
        • 2.Rf5#
        • 2.Qe3#
        • 2.Qd4#
        • 2.Qa1#
      • 1...Sxd6!
    • 1.Qa2+?
      • 1...Kxe5
        • 2.Re4#
      • 1...Qd5!
  • Keys
    • 1.Re4!
      • threat
        • 2.Sf4#
      • 1...Kd5
        • 2.Sf4#
      • 1...Qxe5
        • 2.Qa2#
      • 1...Sdxe5
        • 2.Qxf7#
      • 1...Sfxe5
        • 2.g8Q#
        • 2.g8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • K(c);OGATEB,P-FLIGHT,XP(F)::R(C)
    • Q(b);N_GUARD,SBLOCK,XP(F)::QAB1(I),XS(d)
    • S(d);N_GUARD,SBLOCK,XP(F)::R1(C)
    • S(e);N_GUARD,SBLOCK,XP(F)::R1(D),XQ(b)
  • Tries
    • Try
      • R(D);CHECK,XQ(b)
      • Refutation
        • S(e);XR(D)
    • Try
      • Q(I);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(F)::R1(D)
      • Refutation
        • Q(b);P_PINR(C),P_SPINQ(b)
  • Actual
    • R(D);
    • Threat
      • S(G)
    • Vars
      • K(c);S_FLIGHT::S(G)
      • Q(b);N_GUARD,P_SPINQ(b),XP(F)::QAB(I)
      • S(d);OGATE,P_SPINS(d),XP(F)::QAB1(I),XS(e)
      • S(e);P_SPINS(e),XP(F)::P=Q
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).