MESON Chess Problem Database

Problem Display
PID: 181925 (8/8/2N5/2pp3p/4pB1p/3kp2B/1K4Q1/n7 w - - 0 1)

Greene, S

British Chess Magazine, 1912

8/8/2N5/2pp3p/4pB1p/3kp2B/1K4Q1/n7

#2

5 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qe2#
    • 1...Sc2
      • 2.Qxc2#
    • 1...Sb3
      • 2.Qc2#
    • 1...d4
      • 2.Se5#
  • Tries
    • 1.Bg4?
      • threat
        • 2.Qe2#
      • 1...Kc4
        • 2.Be2#
        • 2.Qe2#
      • 1...e2
        • 2.Bxe2#
        • 2.Qxe2#
      • 1...hxg4!
    • 1.Qd2+?
      • 1...Kc4
        • 2.Qe2#
      • 1...exd2
        • 2.Bf1#
      • 1...Kxd2!
  • Keys
    • 1.Qf2!
      • 1...Kc4
        • 2.Qe2#
      • 1...exf2
        • 2.Bf1#
      • 1...e2
        • 2.Se5#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sb3
        • 2.Qc2#
      • 1...c4
        • 2.Qxe3#
      • 1...d4
        • 2.Se5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB(B)
    • S(a);N_GUARD::QAB1(B),XS(a)
    • S(a);N_GUARD::QAB1(B)
    • P(g);SBLOCK::S(E)
  • Tries
    • Try
      • B(C);
      • Threat
        • QAB1(B)
      • Refutation
        • P(h);XB(C)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(B)
        • P(c);XQ(B)::B(C)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c),XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(b);S_FLIGHT::QAB(B)
      • P(c);N_GUARD,XQ(B)::B(C)
      • P(c);::S(E)
      • S(a);N_GUARD::QAB1(B),XS(a)
      • S(a);N_GUARD::QAB1(B)
      • P(f);SBLOCK::QAR1(B),XP(c)
      • P(g);SBLOCK::S(E)
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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).