MESON Chess Problem Database

Problem Display
PID: 40146 (6B1/3Q4/2p2P2/1p1NNR2/3k1ppK/8/rr3P2/1bR3B1 w - - 0 1)

Barnes, Barry Peter

Evening News, 1956

6B1/3Q4/2p2P2/1p1NNR2/3k1ppK/8/rr3P2/1bR3B1

#2

10 + 8

4199 Barnes about Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sc3#
    • 1...Bc2
      • 2.f3#
    • 1...b4
      • 2.Rc4#
    • 1...cxd5
      • 2.Qxd5#
    • 1...c5
      • 2.Sc3#
  • Tries
    • 1.Sf3+?
      • 1...Kd3
        • 2.Sc3#
      • 1...gxf3
        • 2.Sc3#
      • 1...Ke4!
    • 1.Sxc6+?
      • 1...Kd3
        • 2.Sc3#
      • 1...Ke4!
    • 1.Rd1+?
      • 1...Ke4
        • 2.Sc3#
      • 1...Kc5
        • 2.Qxc6#
        • 2.Qe7#
      • 1...Rd2
        • 2.f3#
      • 1...Bd3!
    • 1.Rxf4+?
      • 1...Kxe5
        • 2.Qe6#
        • 2.Qc7#
        • 2.Qe7#
      • 1...Be4!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Sc3#
      • 1...Ke4
        • 2.Rxf4#
      • 1...Rxf2
        • 2.Qb4#
      • 1...cxd5
        • 2.Qxd5#
      • 1...Rc2
        • 2.Rxf4#
      • 1...Bc2
        • 2.f3#
      • 1...Be4
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • K(d);P-FLIGHT::S(E)
    • B(a);S_CUTR(c)::B(B)+P(C)
    • P(g);N_GUARD::R1(A)
    • P(h);OGATE,P_SPINP(h),XS(E)::QAR1(I),XP(h)
    • P(h);SBLOCK::QAR(I)+S(E)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR(I)+S(E)
        • P(f);XS(F)::QAR(I)+S(E)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • S(F);CHECK,XP(h)
      • Vars
        • K(d);P-FLIGHT::QAR(I)+S(E)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(d);P-FLIGHT::S(E)
        • R(c);P_SPINR(c)::B(B)+P(C)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • R(G);CHECK,XP(e)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • Q(I);
    • Threat
      • QAR(I)+S(E)
    • Vars
      • K(d);P-FLIGHT::R1(G),XP(e)
      • R(c);N_GUARD,P_SPINR(c),XP(C)::QAR2(I)
      • P(h);OGATE,P_SPINP(h),XS(E)::QAR1(I),XP(h)
      • R(c);S_CUTB(a)::R(G),XP(e)
      • B(a);S_CUTR(c)::B(B)+P(C)
      • B(a);SBLOCK::QAB1(I)
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).