MESON Chess Problem Database

Problem Display
PID: 175181 (8/8/8/4p3/8/p1P1k1N1/Pp2B2B/1K2Q3 w - - 0 1)

Oskam, GCA

The Times, 1902

8/8/8/4p3/8/p1P1k1N1/Pp2B2B/1K2Q3

#2

7 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qd2#
    • 1...e4
      • 2.Sf1#
      • 2.Sf5#
  • Tries
    • 1.Sh5?
      • 1...e4
        • 2.Bg1#
        • 2.Bf4#
      • 1...Ke4!
    • 1.Bd1+?
      • 1...Kf4
        • 2.Qd2#
      • 1...Kd3!
    • 1.Bh5+?
      • 1...Kf4
        • 2.Qd2#
      • 1...Kd3!
    • 1.Qd2+?
      • 1...Kf2
        • 2.Bd1#
        • 2.Bg4#
        • 2.Bh5#
      • 1...Kxd2!
    • 1.Qf2+?
      • 1...Kd2
        • 2.Se4#
      • 1...Kxf2!
    • 1.Qd1?
      • 1...Kf2
        • 2.Qg1#
      • 1...Kf4
        • 2.Qd2#
      • 1...e4!
  • Keys
    • 1.c4!
      • 1...Kd4
        • 2.Bg1#
      • 1...Kf4
        • 2.Qd2#
      • 1...e4
        • 2.Sf5#

This is a version of 120003

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB(B)
  • Tries
    • Try
      • S(G);
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT::S(G)
      • Refutation
        • K(c);S_FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
        • K(c);S_FLIGHT::QAB(B)
      • Refutation
        • P(d);
  • Actual
    • P(F);
    • Vars
      • K(c);S_FLIGHT::B(E)
      • K(c);S_FLIGHT::QAB(B)
      • P(d);SBLOCK::S(G)
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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).