MESON Chess Problem Database

Problem Display
PID: 245779 (q2b2R1/2PNkp2/5p1K/1BN5/8/6Qb/8/3r4 w - - 0 1)

Wrobel, Marian

Arbejder-Skak, 1951

q2b2R1/2PNkp2/5p1K/1BN5/8/6Qb/8/3r4

#2

7 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.cxd8Q#
      • 2.cxd8B#
      • 2.c8S#
    • 1...Qg2
      • 2.cxd8Q#
      • 2.cxd8B#
      • 2.c8S#
    • 1...Qf3
      • 2.cxd8Q#
      • 2.cxd8B#
      • 2.c8S#
    • 1...Qe4
      • 2.cxd8Q#
      • 2.cxd8B#
      • 2.c8S#
    • 1...Qd5
      • 2.cxd8Q#
      • 2.cxd8B#
      • 2.c8S#
    • 1...Qc6
      • 2.cxd8Q#
      • 2.cxd8B#
    • 1...Qb7
      • 2.cxd8Q#
      • 2.cxd8B#
    • 1...Qa1
      • 2.cxd8Q#
      • 2.cxd8B#
      • 2.c8S#
    • 1...Qa2
      • 2.cxd8Q#
      • 2.cxd8B#
      • 2.c8S#
    • 1...Qa3
      • 2.cxd8Q#
      • 2.cxd8B#
      • 2.c8S#
    • 1...Qa4
      • 2.cxd8Q#
      • 2.cxd8B#
      • 2.c8S#
    • 1...Qa5
      • 2.c8S#
    • 1...Qa6
      • 2.cxd8Q#
      • 2.cxd8B#
    • 1...Qa7
      • 2.cxd8Q#
      • 2.cxd8B#
      • 2.c8S#
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.Qg7?
      • threat
        • 2.Qxf6#
        • 2.Qf8#
      • 1...Rxd7
        • 2.Qf8#
      • 1...Bxd7
        • 2.Qf8#
      • 1...Bxc7
        • 2.Qxf6#
      • 1...Be6
        • 2.Qf8#
      • 1...Qf3
        • 2.Qf8#
        • 2.c8S#
      • 1...Qc6
        • 2.Qf8#
      • 1...Qa1
        • 2.Qf8#
        • 2.c8S#
      • 1...Qa6
        • 2.Qf8#
      • 1...Rf1
        • 2.Qf8#
      • 1...Rd6
        • 2.Qf8#
      • 1...f5
        • 2.Qe5#
        • 2.Qf6#
        • 2.Qf8#
      • 1...Kd6!
  • Keys
    • 1.Sb8!
      • threat
        • 2.Re8#
      • 1...f5
        • 2.Qe5#
      • 1...Qc6
        • 2.Sxc6#
      • 1...Rd7
        • 2.c8S#
      • 1...Bd7
        • 2.cxd8Q#
        • 2.cxd8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(f);N_GUARD::PXB(g)=Q
    • Q(f);N_GUARD::P=S
    • P(c);N_GUARD,S_CUTB(b)::QAR2(A)
  • Tries
    • Try
      • Q(A);P_PINP(e)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XS(F)::QAB1(A)
        • B(b);XS(F)::QAB1(A)
        • B(g);XP(E)::QAB1(A),XP(c)
        • B(b);::QAB1(A)
        • Q(f);::QAB1(A)
        • R(a);::QAB1(A)
        • R(a);SBLOCK::QAB1(A)
      • Refutation
        • K(d);N_SPINP(e),S_FLIGHT
  • Actual
    • S(F);
    • Threat
      • R1(G)
    • Vars
      • P(c);N_GUARD,S_CUTB(b)::QAR2(A)
      • Q(f);N_GUARD::S(F),XQ(f)
      • R(a);S_CUTB(b)::P=S
      • B(b);S_CUTR(a)::PXB(g)=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).