MESON Chess Problem Database

Problem Display
PID: 70974 (8/2Q5/2n5/2k5/2B5/1K4N1/5P2/8 w - - 0 1)

Speckmann, Werner

Die Schwalbe, 1962

8/2Q5/2n5/2k5/2B5/1K4N1/5P2/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd6#
  • Tries
    • 1.Bf1?
      • 1...Kd4
        • 2.Qd6#
      • 1...Kd5!
    • 1.Be2?
      • 1...Kd4
        • 2.Qd6#
      • 1...Kd5!
    • 1.Bd3?
      • 1...Kd4
        • 2.Qd6#
      • 1...Kd5!
    • 1.Ba6?
      • 1...Kd4
        • 2.Qd6#
      • 1...Kd5!
    • 1.Be6?
      • 1...Kd4
        • 2.Qd6#
      • 1...Kb5!
    • 1.Bf7?
      • 1...Kd4
        • 2.Qd6#
      • 1...Kb5!
    • 1.Bg8?
      • 1...Kd4
        • 2.Qd6#
      • 1...Kb5!
    • 1.Qxc6+?
      • 1...Kd4
        • 2.Qd5#
        • 2.Qd6#
      • 1...Kxc6!
  • Keys
    • 1.f4!
      • 1...Kd4
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINS(b),S_FLIGHT::QAR2(E)
  • Tries
    • Try
      • B(D);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);N_SPINS(b),P-FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);N_SPINS(b),P-FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);N_SPINS(b),P-FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);N_SPINS(b),P-FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);N_SPINS(b),P-FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);N_SPINS(b),P-FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);N_SPINS(b),P-FLIGHT
    • Try
      • Q(E);CHECK,XS(b)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
  • Actual
    • P(A);
    • Vars
      • K(a);N_SPINS(b),S_FLIGHT::QAB(E)
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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).