MESON Chess Problem Database

Problem Display
PID: 21373 (8/8/q1p5/p7/B2Q4/p2N4/Rn1bk1K1/8 w - - 0 1)

Mansfield, Comins

1st HM., Good Companions (November Meredith Ty.), 1918

8/8/q1p5/p7/B2Q4/p2N4/Rn1bk1K1/8

#2

5 + 7

3132 The Good Companion Two-Mover 1922
3391 Het Half Pin Thema 1924
3360 Simple Two-move Themes 1924
56 The Problemist 1929
4797 A Genius of the Two-mover 1936
3202 Complete Mansfield/I 1996
3310 2345 Chess Problems 1997
56 The Problemist 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd3
      • 2.Qf2#
    • 1...Be1
      • 2.Sc1#
      • 2.Sf4#
    • 1...Sxd3
      • 2.Qe4#
  • Tries
    • 1.Sc1+?
      • 1...Ke1
        • 2.Qf2#
        • 2.Qh4#
      • 1...Bxc1!
    • 1.Sf4+?
      • 1...Ke1
        • 2.Qf2#
      • 1...Bxf4!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qf2#
      • 1...Ke1
        • 2.Qf2#
      • 1...Sxa4
        • 2.Qxd2#
      • 1...Be1
        • 2.Bd1#
      • 1...Be3
        • 2.Qd1#
      • 1...Sd1
        • 2.Qxd2#
      • 1...Sd3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(f);SBLOCK,XS(C)::QAR1(E)
    • S(a);P_SPINB(b),XS(C)::QAR2(E)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • B(b);P_SPINS(a),XS(C)
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(E)
      • Refutation
        • B(b);P_SPINS(a),XS(C)
  • Actual
    • S(C);
    • Threat
      • QAR1(E)
    • Vars
      • K(c);P-FLIGHT::QAB1(E)
      • S(a);P_SPINB(b),XB(D)::QAR1(E),XB(b)
      • B(b);P_SPINS(a),SBLOCK::B(D)
      • B(b);OGATE,P_SPINS(a),SBLOCK::QAB1(E)
      • S(a);P_SPINB(b)::QAR1(E),XB(b)
      • S(a);P_SPINB(b)::QAR2(E)
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).