MESON Chess Problem Database

Problem Display
PID: 222827 (4n3/B2n2N1/2p5/3kPp2/5P2/Qp1P1p2/b7/7K w - - 0 1)

Hirsch, Heinrich

Wiener Hausfrauen-Zeitung, 1883

4n3/B2n2N1/2p5/3kPp2/5P2/Qp1P1p2/b7/7K

#2

7 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qxb3#
    • 1...Sc5
      • 2.Qxc5#
    • 1...Sxe5
      • 2.Qc5#
    • 1...Sdf6
      • 2.Qc5#
    • 1...Sb8
      • 2.Qc5#
    • 1...Sf8
      • 2.Qc5#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sef6
      • 2.Qd6#
    • 1...Sc7
      • 2.Qd6#
    • 1...Sxg7
      • 2.Qd6#
    • 1...b2
      • 2.Qxa2#
  • Tries
    • 1.Bg1?
      • 1...Sxe5
        • 2.Qc5#
      • 1...Sxg7
        • 2.Qd6#
      • 1...c5
        • 2.Qa8#
      • 1...Bb1
        • 2.Qxb3#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sb6
        • 2.Qc5#
      • 1...Sdf6
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Sf8
        • 2.Qc5#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sef6
        • 2.Qd6#
      • 1...Sc7
        • 2.Qd6#
      • 1...b2
        • 2.Qxa2#
      • 1...f2!
    • 1.Be3?
      • 1...Sxe5
        • 2.Qc5#
      • 1...Sxg7
        • 2.Qd6#
      • 1...c5
        • 2.Qa8#
      • 1...Bb1
        • 2.Qxb3#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sb6
        • 2.Qc5#
      • 1...Sdf6
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Sf8
        • 2.Qc5#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sef6
        • 2.Qd6#
      • 1...Sc7
        • 2.Qd6#
      • 1...b2
        • 2.Qxa2#
      • 1...f2!
    • 1.Qa5+?
      • 1...Sc5
        • 2.Qxc5#
      • 1...c5!
  • Keys
    • 1.Bf2!
      • 1...Sxe5
        • 2.Qc5#
      • 1...Sxg7
        • 2.Qd6#
      • 1...c5
        • 2.Qa8#
      • 1...Bb1
        • 2.Qxb3#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sb6
        • 2.Qc5#
      • 1...Sdf6
        • 2.Qc5#
      • 1...Sb8
        • 2.Qc5#
      • 1...Sf8
        • 2.Qc5#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sef6
        • 2.Qd6#
      • 1...Sc7
        • 2.Qd6#
      • 1...b2
        • 2.Qxa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::QAB(B),XP(b)
    • S(g);N_GUARD::QAR1(B),XS(g)
    • S(g);N_GUARD,XP(E)::QAR1(B)
    • S(g);N_GUARD::QAR1(B)
    • S(h);N_GUARD::QAR1(B),XS(h)
    • S(h);N_GUARD::QAR1(B)
    • S(h);N_GUARD,XS(G)::QAR1(B)
    • P(b);OGATEB::QAB(B),XB(a)
  • Tries
    • Try
      • B(F);
      • Vars
        • S(g);N_GUARD,XP(E)::QAR1(B)
        • S(h);N_GUARD,XS(G)::QAR1(B)
        • P(f);OGATEB::QAB(B)
        • B(a);N_GUARD::QAB(B),XP(b)
        • S(g);N_GUARD::QAR1(B),XS(g)
        • S(g);N_GUARD::QAR1(B)
        • S(h);N_GUARD::QAR1(B),XS(h)
        • S(h);N_GUARD::QAR1(B)
        • P(b);OGATEB::QAB(B),XB(a)
      • Refutation
        • P(c);
    • Try
      • B(F);
      • Vars
        • S(g);N_GUARD,XP(E)::QAR1(B)
        • S(h);N_GUARD,XS(G)::QAR1(B)
        • P(f);OGATEB::QAB(B)
        • B(a);N_GUARD::QAB(B),XP(b)
        • S(g);N_GUARD::QAR1(B),XS(g)
        • S(g);N_GUARD::QAR1(B)
        • S(h);N_GUARD::QAR1(B),XS(h)
        • S(h);N_GUARD::QAR1(B)
        • P(b);OGATEB::QAB(B),XB(a)
      • Refutation
        • P(c);
    • Try
      • Q(B);CHECK
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::QAR1(B),XS(g)
      • Refutation
        • P(f);P_SPINP(f)
  • Actual
    • B(F);
    • Vars
      • S(g);N_GUARD,XP(E)::QAR1(B)
      • S(h);N_GUARD,XS(G)::QAR1(B)
      • P(f);OGATEB::QAB(B)
      • B(a);N_GUARD::QAB(B),XP(b)
      • S(g);N_GUARD::QAR1(B),XS(g)
      • S(g);N_GUARD::QAR1(B)
      • S(h);N_GUARD::QAR1(B),XS(h)
      • S(h);N_GUARD::QAR1(B)
      • P(b);OGATEB::QAB(B),XB(a)
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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).