MESON Chess Problem Database

Problem Display
PID: 11558 (8/8/8/8/2R5/5Q2/1k6/Rn2K3 w Q - 0 1)

Speckmann, Werner

Kieler Neueste Nachrichten, 1939

8/8/8/8/2R5/5Q2/1k6/Rn2K3

#2

4 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Qa3#
      • 2.Qc3#
    • 1...Sa3
      • 2.Qxa3#
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
  • Tries
    • 1.Kd1?
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Sd2
        • 2.Qa3#
        • 2.Qc3#
      • 1...Sa3
        • 2.Qxa3#
        • 2.Qc3#
      • 1...Kxa1!
    • 1.Ke2?
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Sd2
        • 2.Qa3#
        • 2.Qc3#
      • 1...Sa3
        • 2.Qxa3#
        • 2.Qc3#
      • 1...Kxa1!
    • 1.Kf2?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sd2
        • 2.Qa3#
        • 2.Qc3#
      • 1...Sa3
        • 2.Qxa3#
        • 2.Qc3#
      • 1...Kxa1!
    • 1.Rxb1+?
      • 1...Ka2
        • 2.Qb3#
      • 1...Kxb1!
    • 1.Rc5?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sd2
        • 2.Qa3#
        • 2.Qc3#
      • 1...Sa3
        • 2.Qxa3#
        • 2.Qc3#
      • 1...Kxa1!
    • 1.Rc6?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sd2
        • 2.Qa3#
        • 2.Qc3#
      • 1...Sa3
        • 2.Qxa3#
        • 2.Qc3#
      • 1...Kxa1!
    • 1.Rc7?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sd2
        • 2.Qa3#
        • 2.Qc3#
      • 1...Sa3
        • 2.Qxa3#
        • 2.Qc3#
      • 1...Kxa1!
    • 1.Rc8?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sd2
        • 2.Qa3#
        • 2.Qc3#
      • 1...Sa3
        • 2.Qxa3#
        • 2.Qc3#
      • 1...Kxa1!
    • 1.Qa8?
      • threat
        • 2.Qa2#
      • 1...Kb3
        • 2.Qa2#
      • 1...Sa3
        • 2.Qxa3#
      • 1...Sc3!
    • 1.Qd3?
      • threat
        • 2.Qxb1#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sd2
        • 2.Qa3#
        • 2.Qc3#
      • 1...Sa3
        • 2.Qxa3#
        • 2.Qc3#
      • 1...Kxa1!
    • 1.Qe3?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sd2
        • 2.Qa3#
        • 2.Qc3#
      • 1...Sa3
        • 2.Qxa3#
        • 2.Qc3#
      • 1...Kxa1!
    • 1.Qg3?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sd2
        • 2.Qa3#
        • 2.Qc3#
      • 1...Sa3
        • 2.Qxa3#
        • 2.Qc3#
      • 1...Kxa1!
    • 1.Qh3?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sd2
        • 2.Qa3#
        • 2.Qc3#
      • 1...Sa3
        • 2.Qxa3#
        • 2.Qc3#
      • 1...Kxa1!
    • 1.Qf6+?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Kb3!
  • Keys
    • 1.Rc1!
      • 1...Kxa1
        • 2.Qa3#
      • 1...Kxc1
        • 2.Qc3#
      • 1...Sd2
        • 2.Qa3#
        • 2.Qc3#
      • 1...Sa3
        • 2.Qxa3#
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#

This is a version of 157247

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(C),XS(a)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • S(a);CHECK,N_GUARD::QAB1(C),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • K(B);P-FLIGHT
      • Vars
        • S(a);CHECK,N_GUARD::QAB1(C),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • K(B);S_FLIGHT
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • R(A);CHECK,XS(a)
      • Vars
        • K(b);P-FLIGHT::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT,XR(A)
    • Try
      • R(D);
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • R(D);
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • R(D);
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • R(D);
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(b);P-FLIGHT::QAB1(C)
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XS(a)
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • Q(C);
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • Q(C);
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • Q(C);
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • Q(C);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(C),XS(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • R(D);
    • Vars
      • K(b);P_SPINS(a),S_FLIGHT,XR(A)::QAR2(C)
      • K(b);P_SPINS(a),S_FLIGHT,XR(D)::QAR2(C)
      • S(a);N_GUARD::QAB1(C),XS(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).