MESON Chess Problem Database

Problem Display
PID: 11254 (3q1r2/b3R2b/7n/8/1B1p1pN1/2r2Q1K/RN2P1P1/4k3 w - - 0 1)

Mansfield, Comins

L'Echiquier EP Ty., 1937

3q1r2/b3R2b/7n/8/1B1p1pN1/2r2Q1K/RN2P1P1/4k3

#2

9 + 9

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3+?
      • 1...Kd1
        • 2.Sgf2#
        • 2.Qf1#
        • 2.e3#
        • 2.e4#
      • 1...Bxd3!
    • 1.Qxc3+?
      • 1...Kf1
        • 2.Qe1#
        • 2.Qc1#
      • 1...dxc3!
    • 1.e3?
      • threat
        • 2.Qd1#
        • 2.Qf2#
      • 1...Kd2
        • 2.Qd1#
      • 1...dxe3
        • 2.Qf2#
      • 1...fxe3
        • 2.Qd1#
      • 1...Bc2
        • 2.Qf2#
      • 1...Sxg4!
  • Keys
    • 1.e4!
      • threat
        • 2.Sd3#
      • 1...Kd2
        • 2.Sd3#
      • 1...dxe4 ep
        • 2.Qf2#
      • 1...fxe4 ep
        • 2.Qd1#
      • 1...d3
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK,N_SPINQ(E)
      • Refutation
        • B(g);XS(B)
    • Try
      • Q(E);CHECK,N_SPINQ(E),XR(b)
      • Refutation
        • P(c);P_SPINP(c),XQ(E)
    • Try
      • P(C);N_SPINQ(E)
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
        • P(c);P_SPINP(c),XP(C)::QAB1(E)
        • P(d);P_SPINP(d),XP(C)::QAR1(E)
        • B(g);::QAB1(E)
      • Refutation
        • S(e);XS(H)
  • Actual
    • P(C);
    • Threat
      • S(B)
    • Vars
      • K(a);S_FLIGHT::R(A)+S(B)
      • P(c);EP,N_PINQ(E),P_SPINP(c),XP(C)::QAB1(E)
      • P(d);EP,N_PINQ(E),P_SPINP(d),XP(C)::QAR1(E)
      • P(c);N_PINQ(E)::QAR1(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).