MESON Chess Problem Database

Problem Display
PID: 93914 (Kb6/p5rN/2Q1p3/2P1k3/4Bp2/7r/3P1Nb1/8 w - - 0 1)

Zimmermann, Stepan

Ceske listy sachove, 1900

Kb6/p5rN/2Q1p3/2P1k3/4Bp2/7r/3P1Nb1/8

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc7
      • 2.Qd6#
    • 1...Bxe4
      • 2.Qxe4#
    • 1...Bd6
      • 2.Qxd6#
  • Tries
    • 1.Sd3+?
      • 1...Kd4
        • 2.Qa4#
      • 1...Rxd3!
    • 1.Qxe6+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kxe6!
  • Keys
    • 1.Qa4!
      • threat
        • 2.d4#
      • 1...Bxe4+
        • 2.Qxe4#
      • 1...Rhxh7
        • 2.Qa1#
      • 1...Rgxh7
        • 2.Sg4#
      • 1...f3
        • 2.Sd3#
      • 1...Rd3
        • 2.Sxd3#
      • 1...Rd7
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(g);S_CUTB(h)::QAB1(E)
    • B(a);OGATE,P_PINQ(E),XB(C)::QAR1(E),XB(a)
    • B(h);N_GUARD::QAB1(E),XB(h)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR(E)
      • Refutation
        • R(b);XS(B)
    • Try
      • Q(E);CHECK,P_SPINB(C),XP(e)
      • Vars
        • K(d);S_FLIGHT::QAR1(E)
      • Refutation
        • K(d);P-FLIGHT,XQ(E)
  • Actual
    • Q(E);P_SPINB(C)
    • Threat
      • P(A)
    • Vars
      • B(a);CHECK,OGATE,XB(C)::QAR1(E),XB(a)
      • R(b);N_GUARD,XS(F)::QAB(E)
      • R(g);N_GUARD,XS(F)::S(B)
      • P(c);N_PINB(C),S_CUTR(b)::S(B)
      • R(b);N_GUARD::S(B),XR(b)
      • R(g);N_GUARD::S(B)
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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).