MESON Chess Problem Database

Problem Display
PID: 129770 (3B1K2/3p4/1P1k4/N4p1P/P4N2/1pr1PP2/7Q/8 w - - 0 1)

Erlin, Konrad (AKA Erlinger, Konrad)

Deutsche Schachzeitung, 1892

3B1K2/3p4/1P1k4/N4p1P/P4N2/1pr1PP2/7Q/8

#2

10 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3+?
      • 1...Kd5
        • 2.Qe5#
      • 1...Ke6
        • 2.Qe5#
      • 1...f4!
    • 1.Qd2+?
      • 1...Kc5
        • 2.Qd4#
      • 1...Ke5
        • 2.Qd4#
        • 2.Qd5#
      • 1...Rd3!
  • Keys
    • 1.Qb2!
      • 1...Kc5
        • 2.Qa3#
      • 1...Ke5
        • 2.Sc4#
      • 1...Rxe3
        • 2.Qd4#
      • 1...Rc1
        • 2.Be7#
        • 2.Qd4#
      • 1...Rc2
        • 2.Be7#
        • 2.Qd4#
      • 1...Rd3
        • 2.Be7#
      • 1...Rc4
        • 2.Be7#
      • 1...Rc5
        • 2.Be7#
        • 2.Qf6#
      • 1...Rc6
        • 2.Sb7#
        • 2.Be7#
        • 2.Qd4#
      • 1...Rc7
        • 2.Be7#
        • 2.Qd4#
      • 1...Rc8
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(A)
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(A)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • Q(A);
    • Vars
      • K(d);S_FLIGHT::QAB(A)
      • K(d);P_SPINR(b),S_FLIGHT::S(F)
      • R(b);OGATE,XP(B)::QAR2(A)
      • R(b);::B(I)
      • R(b);OGATE,P_PINB(I)::QAR2(A)
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).