MESON Chess Problem Database

Problem Display
PID: 56140 (8/6Q1/3p4/Kp1P1k1P/p3qN1p/6P1/6n1/1B6 w - - 0 1)

Mansfield, Comins

Magyar Sakkelet, 1985

8/6Q1/3p4/Kp1P1k1P/p3qN1p/6P1/6n1/1B6

#2

7 + 7

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.Bxc2#
    • 1...Qd3
      • 2.Bxd3#
    • 1...Sxf4
      • 2.g4#
  • Tries
    • 1.Sh3?
      • threat
        • 2.Qg5#
        • 2.g4#
      • 1...hxg3
        • 2.Qg5#
      • 1...Qc2
        • 2.Bxc2#
      • 1...Qd3
        • 2.Bxd3#
      • 1...Se3
        • 2.Qg5#
      • 1...Qxb1!
    • 1.Se6?
      • threat
        • 2.Sd4#
        • 2.Qg5#
        • 2.g4#
      • 1...hxg3
        • 2.Qg5#
      • 1...Qc2
        • 2.Bxc2#
      • 1...Qd3
        • 2.Bxd3#
      • 1...Se3
        • 2.Sd4#
        • 2.Qg5#
      • 1...Qxb1!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qg6#
      • 1...Qe1+
        • 2.Sxe1#
      • 1...Qb4+
        • 2.Sxb4#
      • 1...Qxd3
        • 2.Bxd3#
      • 1...Qg4
        • 2.Sf4#
      • 1...Qe6
        • 2.Se5#
      • 1...Qe8
        • 2.Se5#
      • 1...Sf4
        • 2.g4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(c);OGATEB::B(A),XQ(c)
    • S(a);SBLOCK,XS(C)::P(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);XP(B)::QAR1(G)
        • Q(c);OGATEB::B(A),XQ(c)
        • S(a);::QAR1(G)
      • Refutation
        • Q(c);N_SPINQ(c),XB(A)
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Vars
        • P(d);XP(B)::QAR1(G)
        • Q(c);OGATEB::B(A),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XB(A)
  • Actual
    • S(C);N_PINQ(c)
    • Threat
      • QAB1(G)
    • Vars
      • Q(c);CHECK::B(A)+S(C),XQ(c)
      • Q(c);OGATE,P_SPINQ(c),XS(C)::B(A),XQ(c)
      • Q(c);::B(A)+S(C)
      • S(a);S_CUTQ(c)::P(B)
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).