MESON Chess Problem Database

Problem Display
PID: 33327 (4N1BB/1Q1p2p1/2pP4/1N4p1/pP2k1P1/Rp4P1/4P3/2R1K3 w - - 0 1)

Zidek, Alexander

Comm., Rochade Europa, 1986-1987

4N1BB/1Q1p2p1/2pP4/1N4p1/pP2k1P1/Rp4P1/4P3/2R1K3

#2

13 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Kd2?
      • 1...b2
        • 2.Re3#
      • 1...g6
        • 2.Sc3#
        • 2.Rc4#
      • 1...Ke5!
    • 1.Kf2?
      • 1...b2
        • 2.Re3#
      • 1...g6
        • 2.Sc3#
        • 2.Rc4#
      • 1...Ke5!
    • 1.Bxg7?
      • 1...b2
        • 2.Rc4#
      • 1...Ke3!
    • 1.Rc3?
      • 1...Ke5
        • 2.Re3#
      • 1...b2
        • 2.Re3#
      • 1...g6!
    • 1.Rc4+?
      • 1...Ke5
        • 2.Bxg7#
      • 1...Ke3!
    • 1.Rc5?
      • 1...Ke3
        • 2.Re5#
      • 1...g6
        • 2.Re5#
      • 1...b2!
    • 1.Qxc6+?
      • 1...Ke3
        • 2.Rc3#
        • 2.Qf3#
      • 1...Ke5
        • 2.Bxg7#
        • 2.Rc5#
        • 2.Qd5#
      • 1...dxc6!
    • 1.Qxd7?
      • threat
        • 2.Qe6#
        • 2.Qe7#
      • 1...Ke3
        • 2.Qe6#
        • 2.Qe7#
      • 1...Ke5
        • 2.Qf5#
        • 2.Qe6#
        • 2.Qe7#
      • 1...cxb5!
  • Keys
    • 1.Rxc6!
      • 1...Ke3
        • 2.Rc3#
      • 1...Ke5
        • 2.Rc5#
      • 1...dxc6
        • 2.Qe7#
      • 1...b2
        • 2.Rc5#
      • 1...g6
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • P(a);OGATE::R1(D)
      • Refutation
        • K(c);N_SPINP(e),P-FLIGHT,P_SPINP(g)
    • Try
      • K(B);S_FLIGHT
      • Vars
        • P(a);OGATE::R1(D)
      • Refutation
        • K(c);N_SPINP(e),P-FLIGHT,P_SPINP(g)
    • Try
      • B(M);XP(g)
      • Vars
        • P(a);::R(A)
      • Refutation
        • K(c);N_SPINP(e),P-FLIGHT,P_SPINP(a)
    • Try
      • R(A);
      • Vars
        • K(c);N_SPINP(e),P-FLIGHT,P_SPINP(g)::R(A)
        • P(a);::R1(A)
      • Refutation
        • P(g);
    • Try
      • R(A);CHECK
      • Vars
        • K(c);N_SPINP(e),P-FLIGHT,P_SPINP(g)::B(M),XP(g)
      • Refutation
        • K(c);N_SPINP(e),P-FLIGHT,P_SPINP(a)
    • Try
      • R(A);
      • Vars
        • K(c);N_SPINP(e),P-FLIGHT,P_SPINP(a)::R(A)
        • P(g);::R1(A)
      • Refutation
        • P(a);
    • Try
      • Q(J);CHECK,XP(e)
      • Refutation
        • P(f);XQ(J)
    • Try
      • Q(J);N_PINP(e),XP(f)
      • Threat
        • DUALS(2)
      • Refutation
        • P(e);XS(H)
  • Actual
    • R(A);XP(e)
    • Vars
      • K(c);P-FLIGHT,P_SPINP(a)::R(A)
      • K(c);P-FLIGHT,P_SPINP(g)::R(A)
      • P(f);OGATE,P_SPINP(f),XR(A)::QAR(J)
      • P(a);::QAB(J)+R(A)
      • P(g);::QAB(J)+R(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).