MESON Chess Problem Database

Problem Display
PID: 239666 (BB3N1b/P4p2/3q1Nb1/R2pkp2/2p1Pn1Q/1pK5/2nPp3/r7 w - - 0 1)

Pituk, Alexander

Magyar Sakkelet, 1959

BB3N1b/P4p2/3q1Nb1/R2pkp2/2p1Pn1Q/1pK5/2nPp3/r7

#2

10 + 13

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qc7
      • 2.Bxc7#
    • 1...Qxb8
      • 2.axb8Q#
      • 2.axb8B#
    • 1...Sg2
      • 2.S6d7#
      • 2.Rxd5#
    • 1...Sd3
      • 2.S6d7#
      • 2.Rxd5#
    • 1...Sh3
      • 2.S6d7#
      • 2.Rxd5#
    • 1...Sh5
      • 2.S6d7#
      • 2.Rxd5#
    • 1...Se6
      • 2.S6d7#
      • 2.S8d7#
      • 2.Rxd5#
  • Tries
    • 1.Bxd5?
      • threat
        • 2.S6d7#
        • 2.S8d7#
      • 1...Sxd5+
        • 2.Rxd5#
      • 1...Qxb8
        • 2.axb8Q#
        • 2.axb8B#
      • 1...Bxf6
        • 2.Sd7#
      • 1...Qc7
        • 2.Bxc7#
      • 1...fxe4!
    • 1.exd5?
      • threat
        • 2.S8d7#
      • 1...Sxd5+
        • 2.Rxd5#
      • 1...Qxb8
        • 2.axb8Q#
        • 2.axb8B#
      • 1...Qc7
        • 2.Bxc7#
      • 1...Bxf6!
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Qxf4#
      • 1...Kxe4+
        • 2.Sf6#
      • 1...Sxd5+
        • 2.Rxd5#
      • 1...Rf1
        • 2.Sxf4#
      • 1...Sg2
        • 2.Qe7#
      • 1...Sd3
        • 2.Qe7#
      • 1...Sh3
        • 2.Qe7#
      • 1...Sh5
        • 2.Qe7#
      • 1...Se6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • Q(j);OGATEB::B(I),XQ(j)
    • Q(j);N_SPINQ(j),OGATE,XB(I)::PXQ(j)=Q
  • Tries
    • Try
      • B(H);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • S(f);CHECK,OGATE,P_SPINS(f),XB(H)::R1(E),XS(f)
        • Q(j);N_SPINQ(j),OGATE,XB(I)::PXQ(j)=Q
        • B(m);XS(F)::S(J)
        • Q(j);OGATEB::B(I),XQ(j)
      • Refutation
        • P(i);XP(C)
    • Try
      • P(C);XP(g)
      • Threat
        • S(J)
      • Vars
        • S(f);CHECK,OGATE,P_SPINS(f),XP(C)::R1(E),XS(f)
        • Q(j);N_SPINQ(j),OGATE,XB(I)::PXQ(j)=Q
        • Q(j);OGATEB::B(I),XQ(j)
      • Refutation
        • B(m);XS(F)
  • Actual
    • S(F);XP(g)
    • Threat
      • QAB1(D),XS(f)
    • Vars
      • K(h);CHECK,N_SPINQ(j),P-FLIGHT,P_SPINS(f),XP(C)::B(H)+S(F),DCHECK
      • S(f);CHECK,OGATE,P_SPINS(f),XS(F)::R1(E),XS(f)
      • R(a);N_GUARD::R(E)+S(F),XS(f)
      • S(f);N_GUARD::QAR2(D)
      • S(f);SBLOCK::S(J)
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).