MESON Chess Problem Database

Problem Display
PID: 185306 (B1Kn4/4N3/2R5/8/4kp2/7Q/p2P4/q7 w - - 0 1)

Seilberger, Johann Joseph Petrus Adrianus

Basler Nachrichten, 1947

(First published on Sat Sep 13 1947)

B1Kn4/4N3/2R5/8/4kp2/7Q/p2P4/q7

#2

6 + 5

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Re6#
    • 1...Qe5
      • 2.Rc4#
  • Tries
    • 1.Qf5+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf3!
    • 1.Qc3?
      • threat
        • 2.Rc4#
        • 2.Re6#
      • 1...Sxc6
        • 2.Bxc6#
      • 1...f3
        • 2.Rc4#
        • 2.Qe3#
      • 1...Se6
        • 2.Rc4#
        • 2.Rc5#
        • 2.Ra6#
        • 2.Rb6#
        • 2.Rd6#
        • 2.Rxe6#
        • 2.Rc7#
      • 1...Qxc3!
    • 1.Qd3+?
      • 1...Ke5
        • 2.Sg6#
        • 2.Qd5#
      • 1...Kxd3!
    • 1.Qf3+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...Kxf3!
    • 1.d3+?
      • 1...Ke5
        • 2.Qh8#
      • 1...Kd4!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qd5#
      • 1...Kd4
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...f3
        • 2.Qe3#
      • 1...Qd4
        • 2.Re6#
      • 1...Qe5
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(a);SBLOCK::B(E)+R(C),DCHECK
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
      • Refutation
        • K(c);P_SPINP(d),S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);OGATE,P_SPINS(e),XR(C)::B(E),XS(e)
      • Refutation
        • Q(a);P_PINR(C),XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT,XQ(B)
    • Try
      • P(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB(B)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(c);P-FLIGHT::QAR1(B)
      • P(d);N_GUARD::QAR1(B)
      • Q(a);SBLOCK::B(E)+R(C),DCHECK
HTML5 logo

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).