MESON Chess Problem Database

Problem Display
PID: 145627 (1Qn5/N1r3B1/5R2/2pb4/2PkNp2/6rR/4pP2/1B2Kn2 w - - 0 1)

Bohm, Ferenc

Magyar Sakkvilag, 1932

1Qn5/N1r3B1/5R2/2pb4/2PkNp2/6rR/4pP2/1B2Kn2

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc4
      • 2.Rd6#
  • Tries
    • 1.Rg6+?
      • 1...Kxc4
        • 2.Qb5#
      • 1...Rxg7!
    • 1.Rf7+?
      • 1...Kxc4
        • 2.Qb5#
      • 1...Rxg7!
    • 1.Qb2+?
      • 1...Rc3
        • 2.Qxc3#
      • 1...Kxc4!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Rxf4#
      • 1...Kc3
        • 2.Rf7#
      • 1...Ke5
        • 2.Rg6#
      • 1...Rgxg7
        • 2.Qb2#
      • 1...Rcxg7
        • 2.Sb5#
      • 1...Bxc4
        • 2.Rd6#
      • 1...Be4
        • 2.Rd6#
      • 1...f3
        • 2.Rf4#
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(g);SBLOCK,XP(E)::B(I)+R(G),DCHECK
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(E)::QAB1(J)
      • Refutation
        • R(h);XB(I)
    • Try
      • R(G);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(E)::QAB1(J)
      • Refutation
        • R(c);XB(I)
    • Try
      • Q(J);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB1(J),XR(c)
      • Refutation
        • K(d);P-FLIGHT,XP(E)
  • Actual
    • S(F);
    • Threat
      • B(I)+R(G),DCHECK,XP(e)
    • Vars
      • K(d);P_SPINR(c),S_FLIGHT::B(I)+R(G)
      • K(d);P_SPINR(h),S_FLIGHT::B(I)+R(G)
      • R(c);N_GUARD,XB(I)::QAB(J)
      • R(h);XB(I)::S(H)
      • B(g);XP(E)::B(I)+R(G),DCHECK
      • B(g);::B(I)+R(G),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).