MESON Chess Problem Database

Problem Display
PID: 193617 (4K3/8/1PB1p1p1/4k1p1/1P4P1/N3p3/4P3/7Q w - - 0 1)

Schiffer, Vincenz

Neuigkeits Weltblatt, 1915

4K3/8/1PB1p1p1/4k1p1/1P4P1/N3p3/4P3/7Q

#2

8 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qa1#
    • 1...Kd6
      • 2.Sc4#
    • 1...Kf6
      • 2.Qh8#
  • Tries
    • 1.Ke7?
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qa1#
      • 1...Kf4!
    • 1.Kf7?
      • 1...Kd4
        • 2.Qa1#
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf4!
    • 1.Kf8?
      • 1...Kd4
        • 2.Qa1#
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6
        • 2.Qh8#
      • 1...Kf4!
    • 1.Sc4+?
      • 1...Kf4
        • 2.Qf3#
      • 1...Kf6
        • 2.Qh8#
      • 1...Kd4!
    • 1.Sb5?
      • 1...Kf6
        • 2.Qh8#
      • 1...Kf4!
    • 1.Bg2?
      • 1...Kd4
        • 2.Qa1#
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6
        • 2.Qh8#
      • 1...Kf4!
    • 1.Bb7?
      • 1...Kd4
        • 2.Qa1#
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6
        • 2.Qh8#
      • 1...Kf4!
    • 1.Ba8?
      • 1...Kd4
        • 2.Qa1#
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6
        • 2.Qh8#
      • 1...Kf4!
    • 1.Qf3?
      • 1...Kd6
        • 2.Sc4#
      • 1...Kd4!
    • 1.Qe4+?
      • 1...Kd6
        • 2.Sc4#
        • 2.Sb5#
      • 1...Kf6!
    • 1.Qf1?
      • 1...Kd4
        • 2.Qa1#
      • 1...Kd6!
    • 1.Qh2+?
      • 1...Kf6
        • 2.Qh8#
      • 1...Kd4!
    • 1.b7?
      • 1...Kd4
        • 2.Qa1#
      • 1...Kd6
        • 2.b8Q#
        • 2.b8B#
      • 1...Kf6
        • 2.Qh8#
      • 1...Kf4!
  • Keys
    • 1.Bf3!
      • 1...Kd4
        • 2.Qa1#
      • 1...Kf4
        • 2.Qh2#
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB(A)
    • K(b);S_FLIGHT::S(C)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Threat
        • QAR1(A)
      • Vars
        • K(b);S_FLIGHT::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(H);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB(A)
        • K(b);S_FLIGHT::S(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(H);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB(A)
        • K(b);S_FLIGHT::S(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
        • K(b);S_FLIGHT::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);
      • Vars
        • K(b);S_FLIGHT::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(G);
      • Vars
        • K(b);S_FLIGHT::QAB(A)
        • K(b);S_FLIGHT::S(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(G);
      • Vars
        • K(b);S_FLIGHT::QAB(A)
        • K(b);S_FLIGHT::S(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(G);
      • Vars
        • K(b);S_FLIGHT::QAB(A)
        • K(b);S_FLIGHT::S(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::S(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(F);
      • Vars
        • K(b);S_FLIGHT::QAB(A)
        • K(b);S_FLIGHT::P=Q
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(G);
    • Vars
      • K(b);S_FLIGHT::QAB(A)
      • K(b);S_FLIGHT::S(C)
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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).