MESON Chess Problem Database

Problem Display
PID: 6271 (3B4/1Q1p4/3r4/p2N1k1P/qp3p2/5P2/2P5/1B1KR3 w - - 0 1)

Mansfield, Comins

1st Prize, Evening Standard, 1928

3B4/1Q1p4/3r4/p2N1k1P/qp3p2/5P2/2P5/1B1KR3

#2

9 + 7

3098 FIDE Album (1914-1944) (I) 1971
721 Variantim 1989
721 Variantim 1992
3202 Complete Mansfield/I 1996
5459 Sachmatija 2002
145 StrateGems 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc2+
      • 2.Bxc2#
    • 1...Qb3
      • 2.cxb3#
    • 1...Qb5
      • 2.c4#
    • 1...Qc6
      • 2.c3#
      • 2.c4#
    • 1...Qa3
      • 2.c3#
    • 1...Rxd5+
      • 2.Qxd5#
    • 1...b3
      • 2.c4#
  • Tries
    • 1.Qxd7+?
      • 1...Qxd7
        • 2.c3#
        • 2.c4#
      • 1...Re6
        • 2.Qxe6#
      • 1...Rxd7!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qd3#
      • 1...Qxc2+
        • 2.Bxc2#
      • 1...Rxd5+
        • 2.Qxd5#
      • 1...Qxb5
        • 2.c4#
      • 1...Rf6
        • 2.Se7#
      • 1...Qb3
        • 2.cxb3#
      • 1...Qa3
        • 2.c3#
      • 1...Re6
        • 2.Se3#
      • 1...b3
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(a);CHECK,OGATE,P_SPINQ(a),XP(D)::B(A),XQ(a)
    • Q(a);::B(A)+P(D),XQ(a)
    • Q(a);N_PINP(D)::B(A)+P(D)
    • R(f);CHECK,OGATE,XS(F)::QAR2(H),XR(f)
    • P(b);N_PINP(D)::B(A)+P(D)
  • Tries
    • Try
      • Q(H);CHECK,XP(g)
      • Vars
        • R(f);N_GUARD,N_PINS(F),P_SPINR(f)::QAB1(H),XR(f)
      • Refutation
        • R(f);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAB(H)
    • Vars
      • Q(a);CHECK,OGATE,P_SPINQ(a),XP(D)::B(A),XQ(a)
      • R(f);CHECK,OGATE,P_SPINR(f),XS(F)::QAR2(H),XR(f)
      • Q(a);N_PINP(D),XQ(H)::B(A)+P(D)
      • R(f);N_PINS(F),SBLOCK::QAR(H)+S(F),DCHECK
      • Q(a);::B(A)+P(D),XQ(a)
      • Q(a);N_PINP(D)::B(A)+P(D)
      • P(b);N_PINP(D)::B(A)+P(D)
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).