MESON Chess Problem Database

Problem Display
PID: 234932 (kn3Q1q/6P1/pp4r1/1NN3p1/4R3/5R2/r2p4/2nK2bB w - - 0 1)

Hoffmann, Fritz

Source?, 0000

kn3Q1q/6P1/pp4r1/1NN3p1/4R3/5R2/r2p4/2nK2bB

#2

8 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rf7?
      • threat
        • 2.Ra7#
      • 1...Qxg7
        • 2.Re6#
      • 1...Rxg7
        • 2.Rh4#
      • 1...axb5
        • 2.Ra4#
      • 1...Qh5+!
    • 1.Re8?
      • threat
        • 2.Rxb8#
      • 1...Qxf8
        • 2.Rf6#
      • 1...axb5
        • 2.Ra3#
      • 1...Bh2
        • 2.Rf6#
      • 1...Qh2!
  • Keys
    • 1.Re7!
      • threat
        • 2.Ra7#
      • 1...Qxg7
        • 2.Rf6#
      • 1...Rxg7
        • 2.Rh3#
      • 1...axb5
        • 2.Ra3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • Q(k);N_GUARD,XP(G)::B(B)+R(D)
        • R(h);N_GUARD,XP(G)::B(B)+R(D)
        • P(f);XS(E)::B(B)+R(D),DCHECK
      • Refutation
        • Q(k);CHECK
    • Try
      • R(D);
      • Threat
        • R1(D),XS(j)
      • Vars
        • Q(k);N_GUARD,XQ(H)::B(B)+R(C)
        • P(f);XS(E)::B(B)+R(C),DCHECK
        • B(b);S_CUTQ(k)::B(B)+R(C)
      • Refutation
        • Q(k);
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • Q(k);N_GUARD,XP(G)::B(B)+R(C)
      • R(h);N_GUARD,XP(G)::B(B)+R(C)
      • P(f);XS(E)::B(B)+R(C),DCHECK
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).