MESON Chess Problem Database

Problem Display
PID: 6400 (1N1n4/2p5/r7/1pPk1P1R/1P2b3/3B1N2/6Q1/3R2K1 w - - 0 1)

Mansfield, Comins

1st Prize, Evening Standard, 1929

1N1n4/2p5/r7/1pPk1P1R/1P2b3/3B1N2/6Q1/3R2K1

#2

10 + 6

35 L'Italia Scacchistica 1930
1577 Jaarboek 1934
3147 Chess Problems: Introduction to an Art 1963
6479 Problemschach (Sidler) 1968
3098 FIDE Album (1914-1944) (I) 1971
3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Qxa2#
    • 1...Rb6
      • 2.Qa2#
    • 1...Rc6
      • 2.Qa2#
    • 1...Rd6
      • 2.Qa2#
    • 1...Re6
      • 2.Qa2#
    • 1...Rf6
      • 2.Qa2#
    • 1...Rh6
      • 2.Qa2#
    • 1...Sc6
      • 2.Qg8#
  • Tries
    • 1.Qe2?
      • threat
        • 2.Bc4#
        • 2.Bxe4#
        • 2.Qxe4#
      • 1...Bxd3
        • 2.Qxd3#
      • 1...Bxf3
        • 2.Bb1#
        • 2.Bc2#
        • 2.Bc4#
        • 2.Bxb5#
      • 1...Bxf5
        • 2.Bb1#
        • 2.Bc2#
        • 2.Bc4#
        • 2.Bxb5#
        • 2.Bxf5#
        • 2.Rxf5#
        • 2.Qe4#
        • 2.Qe5#
      • 1...Re6
        • 2.Bc4#
        • 2.Bxe4#
        • 2.Qa2#
      • 1...Rg6+!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Se7#
      • 1...Kxc6
        • 2.Bxe4#
      • 1...Rxc6
        • 2.Qa2#
      • 1...Bxd3
        • 2.Sfe5#
      • 1...Bxf3
        • 2.Qxf3#
      • 1...Bxf5
        • 2.Sfd4#
      • 1...Sxc6
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(d);N_GUARD::QAB(C),XR(d)
    • R(d);N_GUARD::QAB(C)
    • S(f);N_GUARD,S_CUTR(d)::QAB(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • B(a);OGATE,P_SPINB(a),XB(D)::QAR2(C),XB(a)
      • Refutation
        • R(d);CHECK
  • Actual
    • S(J);
    • Threat
      • S(J)
    • Vars
      • K(c);S_FLIGHT,XS(J)::B(D),XB(a)
      • R(d);N_GUARD,SBLOCK,XS(J)::QAB(C)
      • B(a);P_SPINB(a),XB(D)::QAB(C)+S(E)
      • B(a);OGATE,P_SPINB(a),XS(E)::QAB(C),XB(a)
      • B(a);P_SPINB(a),XP(H)::QAB(C)+S(E)
      • S(f);N_GUARD,SBLOCK,XS(J)::QAB(C)
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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).