MESON Chess Problem Database

Problem Display
PID: 140012 (4r3/rN4p1/2R2pQB/4k3/2Pp2b1/q4p2/3P4/2b1N2K w - - 0 1)

Schneider, Michael

1st Prize, Bavarian Championship, 1966

4r3/rN4p1/2R2pQB/4k3/2Pp2b1/q4p2/3P4/2b1N2K

#2

8 + 10

23 Die Schwalbe 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Sd3#
    • 1...Qb4
      • 2.Sd3#
    • 1...Qc5
      • 2.Sd3#
    • 1...Qe7
      • 2.Sd3#
    • 1...Qf8
      • 2.Sd3#
    • 1...Qa1
      • 2.Sd3#
    • 1...Qa2
      • 2.Sd3#
    • 1...Qd3
      • 2.Sxd3#
    • 1...Qa4
      • 2.Sd3#
    • 1...Qa5
      • 2.Sd3#
    • 1...Qa6
      • 2.Sd3#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Qe4#
      • 1...Qxc5
        • 2.Sd3#
      • 1...Qd3
        • 2.Sexd3#
        • 2.Scxd3#
      • 1...Bf5
        • 2.Qg3#
      • 1...f5
        • 2.Qd6#
      • 1...Qe3!
    • 1.Rc5+?
      • 1...Ke6
        • 2.Qxe8#
      • 1...Qxc5!
    • 1.Qg5+?
      • 1...Ke4
        • 2.Qf4#
        • 2.Qd5#
      • 1...Bf5
        • 2.Qf4#
      • 1...f5
        • 2.Qf4#
      • 1...fxg5!
    • 1.Qxf6+?
      • 1...Ke4
        • 2.Qf4#
      • 1...gxf6!
  • Keys
    • 1.d3!
      • threat
        • 2.Qe4#
      • 1...Qxd3
        • 2.Sxd3#
      • 1...Bf5
        • 2.Sxf3#
      • 1...f5
        • 2.Qxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • Q(b);N_GUARD::S(A)
    • Q(b);N_GUARD::S(A),XQ(b)
  • Tries
    • Try
      • S(H);
      • Threat
        • QAR1(F)
      • Vars
        • Q(b);N_GUARD,XS(H)::S(A)
        • B(e);OGATE,SBLOCK::QAB(F)
        • P(g);OGATE,SBLOCK::QAB1(F)
      • Refutation
        • Q(b);
    • Try
      • R(E);CHECK
      • Vars
        • K(f);P-FLIGHT,P_SPINP(g)::QAR2(F),XR(j)
      • Refutation
        • Q(b);XR(E)
    • Try
      • Q(F);CHECK
      • Vars
        • B(e);P_SPINB(e)::QAB1(F)
        • P(g);P_SPINP(g)::QAB1(F)
      • Refutation
        • P(g);XQ(F)
    • Try
      • Q(F);CHECK,XP(g)
      • Vars
        • K(f);P-FLIGHT::QAR1(F)
      • Refutation
        • P(i);XQ(F)
  • Actual
    • P(C);
    • Threat
      • QAR1(F)
    • Vars
      • Q(b);XP(C)::S(A),XQ(b)
      • B(e);N_GUARD::S(A),XP(c)
      • P(g);OGATEB,SBLOCK::QAB(F),XP(i)
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).