Problem Display
PID: 54631 (B7/5pr1/3p2bB/p2P4/4kPQ1/1R2P1p1/2P3K1/8 w - - 0 1)

Mansfield, Comins

4th Prize, Friends of Chess (Traditional Ty.), 1971

B7/5pr1/3p2bB/p2P4/4kPQ1/1R2P1p1/2P3K1/8

#2

9 + 7


4054 Complete Mansfield/III 1999

SOLUTION


  • SOUND
  • Sets
    • 1...Bf5
      • 2.Qf3#
    • 1...f5
      • 2.Qf3#
    • 1...f6
      • 2.Qe6#
  • Tries
    • 1.Bxg7?
      • threat
        • 2.f5#
      • 1...Bf5
        • 2.Qf3#
      • 1...f5
        • 2.Qf3#
      • 1...f6
        • 2.Qe6#
      • 1...Bh5!
    • 1.Rb4+?
      • 1...Kxe3
        • 2.f5#
      • 1...axb4!
    • 1.Rb8?
      • threat
        • 2.Re8#
      • 1...Kxe3
        • 2.f5#
      • 1...Bf5
        • 2.Qf3#
      • 1...f5
        • 2.Qf3#
      • 1...f6
        • 2.Qe6#
      • 1...Rg8!
  • Keys
    • 1.Rb7!
      • threat
        • 2.Re7#
      • 1...Kxe3
        • 2.f5#
      • 1...Kxd5
        • 2.Rc7#
      • 1...Bf5
        • 2.Qf3#
      • 1...f5
        • 2.Qf3#
      • 1...f6
        • 2.Qe6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(e);SBLOCK::QAB1(F)
    • P(f);SBLOCK::QAB1(F)
    • P(f);N_GUARD::QAR2(F)
  • Tries
    • Try
      • B(H);XR(g)
      • Threat
        • QAR(F)+P(E)
      • Vars
        • B(e);SBLOCK::QAB1(F)
        • P(f);SBLOCK::QAB1(F)
        • P(f);N_GUARD::QAR2(F)
      • Refutation
        • B(e);
    • Try
      • R(C);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(D)::B(H)+P(E)
      • Refutation
        • P(c);XR(C)
    • Try
      • R(C);
      • Threat
        • R(C)
      • Vars
        • K(b);P-FLIGHT,XP(D)::B(H)+P(E)
        • B(e);SBLOCK::QAB1(F)
        • P(f);SBLOCK::QAB1(F)
        • P(f);N_GUARD::QAR2(F)
      • Refutation
        • R(g);
  • Actual
    • R(C);
    • Threat
      • R(C)
    • Vars
      • K(b);P-FLIGHT,XP(D)::B(H)+P(E)
      • K(b);OGATEB,S_FLIGHT,XP(G)::B(I)+R(C)
      • B(e);SBLOCK::QAB1(F)
      • P(f);SBLOCK::QAB1(F)
      • P(f);N_GUARD::QAR2(F)


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).