MESON Chess Problem Database

Problem Display
PID: 54633 (n7/5p2/PpQPN1n1/2p5/pBk5/1p1N1R2/1p3K2/b4b2 w - - 0 1)

Mansfield, Comins

1st Prize, Skakbladet, 1971

n7/5p2/PpQPN1n1/2p5/pBk5/1p1N1R2/1p3K2/b4b2

#2

8 + 11

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...b5
      • 2.Qe4#
      • 2.Qxc5#
  • Tries
    • 1.Sxb2+?
      • 1...Kxb4
        • 2.Qxa4#
      • 1...Bxb2!
    • 1.Sdxc5?
      • threat
        • 2.Sd3#
      • 1...Kxb4
        • 2.Qxa4#
      • 1...bxc5
        • 2.Qxc5#
      • 1...Bd3
        • 2.Sxd3#
      • 1...Se5
        • 2.Rf4#
      • 1...Se7
        • 2.Rf4#
      • 1...fxe6!
    • 1.Sexc5?
      • threat
        • 2.Se6#
      • 1...Kd4
        • 2.Qe4#
      • 1...bxc5
        • 2.Qxc5#
      • 1...Se5
        • 2.Rf4#
      • 1...Se7
        • 2.Rf4#
      • 1...Bxd3!
    • 1.Rf4+?
      • 1...Kxd3
        • 2.Qe4#
      • 1...Sxf4!
  • Keys
    • 1.Bxc5!
      • threat
        • 2.Ba3#
        • 2.Bb4#
        • 2.Bd4#
        • 2.Bxb6#
      • 1...Kc3
        • 2.Bb4#
      • 1...Bxd3
        • 2.Ba3#
      • 1...bxc5
        • 2.Qxc5#
      • 1...fxe6
        • 2.Bxb6#
      • 1...Se5
        • 2.Sxe5#
      • 1...Se7
        • 2.Se5#
      • 1...a3
        • 2.Bxa3#
        • 2.Bb4#
        • 2.Bd4#
        • 2.Bxb6#
      • 1...b5
        • 2.Ba3#
        • 2.Bb4#
        • 2.Bd4#
        • 2.Bb6#
        • 2.Ba7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK,XP(c)
      • Vars
        • K(f);N_SPINP(g),P-FLIGHT,XB(D)::QAR1(F),XP(e)
      • Refutation
        • B(a);XS(B)
    • Try
      • S(B);XP(g)
      • Threat
        • QAR(F)+S(B)
      • Vars
        • K(f);OGATEB,P-FLIGHT,XB(D)::QAR1(F),XP(e)
        • P(h);OGATE,P_SPINP(h),XS(B)::QAR1(F),XP(h)
        • B(b);::QAR(F)+S(B),XB(b)
        • S(i);N_GUARD::R(C)
      • Refutation
        • P(j);XS(H)
    • Try
      • S(H);XP(g)
      • Threat
        • QAR(F)+S(H)
      • Vars
        • K(f);P-FLIGHT::QAR1(F)
        • P(h);OGATE,P_SPINP(h),XS(H)::QAR1(F),XP(h)
        • S(i);N_GUARD::R(C)
      • Refutation
        • B(b);XS(B)
    • Try
      • R(C);CHECK
      • Vars
        • K(f);N_SPINP(g),S_FLIGHT,XS(B)::QAB1(F)
      • Refutation
        • S(i);XR(C)
  • Actual
    • B(D);XP(g)
    • Threat
      • DUALS(4)
    • Vars
      • K(f);P-FLIGHT::QAR(F)+B(D),DCHECK
      • B(b);XS(B)::QAR(F)+B(D)
      • P(h);OGATE,P_SPINP(h),XB(D)::QAR1(F),XP(h)
      • P(j);XS(H)::QAR(F)+B(D),XP(h)
      • S(i);N_GUARD::S(B),XS(i)
      • S(i);N_GUARD::S(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).