MESON Chess Problem Database

Problem Display
PID: 77625 (8/1Q6/8/8/p7/3RK3/P1k5/8 w - - 0 1)

Zickermann, Albert

Nordwest Deutsche Zeitung, 1938

8/1Q6/8/8/p7/3RK3/P1k5/8

#2

4 + 2

5454 Near Snap 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Ke2?
      • 1...Kc1
        • 2.Rc3#
      • 1...a3!
    • 1.Rd2+?
      • 1...Kc1
        • 2.Qh1#
        • 2.Qb2#
      • 1...Kc3!
    • 1.Ra3?
      • 1...Kd1
        • 2.Qb1#
      • 1...Kc1!
    • 1.Rc3+?
      • 1...Kd1
        • 2.Qh1#
        • 2.Qb1#
      • 1...Kxc3!
    • 1.Qg2+?
      • 1...Kb1
        • 2.Rd1#
      • 1...Kc1!
    • 1.Qb3+?
      • 1...Kc1
        • 2.Rd1#
        • 2.Rc3#
      • 1...axb3!
  • Keys
    • 1.Rd1!
      • 1...Kxd1
        • 2.Qb1#
      • 1...Kc3
        • 2.Rc1#
      • 1...a3
        • 2.Qb3#

This anticipates 42537(2002)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(b);
    • Try
      • R(B);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);S_FLIGHT::QAR2(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(B);CHECK
      • Refutation
        • K(a);P-FLIGHT,XR(B)
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);S_FLIGHT::R(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • P(b);XQ(D)
  • Actual
    • R(B);
    • Vars
      • K(a);S_FLIGHT,XR(B)::QAR2(D)
      • K(a);P-FLIGHT::R(B)
      • P(b);N_GUARD::QAB1(D)
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).