MESON Chess Problem Database

Problem Display
PID: 90287 (4R3/8/2p1P1p1/2p1k1p1/2P1b1P1/p3R3/P3P3/K3Q3 w - - 0 1)

Neukomm, Gyula (Julius) R

Die Schwalbe, 1928

4R3/8/2p1P1p1/2p1k1p1/2P1b1P1/p3R3/P3P3/K3Q3

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qc3#
    • 1...Kf4
      • 2.Qg3#
    • 1...Kd6
      • 2.Qg3#
    • 1...Kf6
      • 2.Qc3#
  • Tries
    • 1.Rxe4+?
      • 1...Kd6
        • 2.Qg3#
      • 1...Kf6
        • 2.Qc3#
      • 1...Kxe4!
    • 1.Qd2?
      • 1...Kf6
        • 2.Qc3#
      • 1...Kf4!
    • 1.Qf2?
      • 1...Kd6
        • 2.Qg3#
        • 2.Qh2#
      • 1...Kd4!
    • 1.Qb1?
      • 1...Kd4
        • 2.Qxe4#
      • 1...Kf4
        • 2.Qxe4#
      • 1...Kd6
        • 2.Qb8#
      • 1...Kf6!
  • Keys
    • 1.Qh1!
      • 1...Kd4
        • 2.Qxe4#
      • 1...Kf4
        • 2.Qxe4#
      • 1...Kd6
        • 2.Qh2#
      • 1...Kf6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 4
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(d);N_SPINB(b),S_FLIGHT::QAB1(B)
    • K(d);N_SPINB(b),S_FLIGHT::QAB(B)
  • Tries
    • Try
      • R(E);CHECK,XB(b)
      • Vars
        • K(d);S_FLIGHT::QAB(B)
      • Refutation
        • K(d);P-FLIGHT,XR(E)
    • Try
      • Q(B);
      • Vars
        • K(d);N_SPINB(b),S_FLIGHT::QAB(B)
      • Refutation
        • K(d);N_SPINB(b),S_FLIGHT
    • Try
      • Q(B);
      • Refutation
        • K(d);N_SPINB(b),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(d);N_SPINB(b),S_FLIGHT::QAR1(B),XB(b)
        • K(d);N_SPINB(b),S_FLIGHT::QAB(B)
      • Refutation
        • K(d);N_SPINB(b),S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(d);N_SPINB(b),S_FLIGHT::QAR1(B),XB(b)
      • K(d);N_SPINB(b),S_FLIGHT::QAB(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).