MESON Chess Problem Database

Problem Display
PID: 149735 (n5K1/2P1k1P1/1n5R/1B1pNp2/2p2r1N/8/1B3Q2/1bq1R1b1 w - - 0 1)

Barnes, Barry Peter

The Problemist, 2013

n5K1/2P1k1P1/1n5R/1B1pNp2/2p2r1N/8/1B3Q2/1bq1R1b1

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Ba3#
    • 1...Qc2
      • 2.Ba3#
    • 1...Re4
      • 2.Sxf5#
    • 1...Bh2
      • 2.Qc5#
    • 1...Sd7
      • 2.Sc6#
  • Tries
    • 1.Sd3+?
      • 1...Qe3
        • 2.Ba3#
      • 1...Re4
        • 2.Sxf5#
      • 1...Qxe1!
    • 1.Bd7?
      • threat
        • 2.Re6#
      • 1...Sxd7
        • 2.Sc6#
      • 1...Sxc7!
    • 1.c8Q?
      • threat
        • 2.Sc6#
        • 2.Re6#
        • 2.Qe8#
        • 2.Qf8#
      • 1...Sd7
        • 2.Sc6#
        • 2.Qxd7#
      • 1...Sc7
        • 2.Sc6#
        • 2.Qf8#
      • 1...Sxc8!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qg5#
      • 1...Rxh4
        • 2.Sg6#
      • 1...Sd7
        • 2.Sc6#
      • 1...Rf1
        • 2.Seg6#
      • 1...Rf2
        • 2.Seg6#
        • 2.Qa3#
      • 1...Rf3
        • 2.Seg6#
      • 1...Rd4
        • 2.Qa3#
      • 1...Re4
        • 2.Sxf5#
      • 1...Rg4
        • 2.Seg6#

There are these versions: 151992

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • Q(b);N_GUARD::B(B)
    • R(e);N_GUARD,S_CUTB(a)::S(D),XP(g)
    • B(c);N_GUARD::QAB(C)
    • S(h);SBLOCK::R(A)+S(F),DCHECK
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • Q(b);P_SPINQ(b)::B(B)
        • R(e);P_SPINR(e)::S(D),XP(g)
      • Refutation
        • Q(b);XR(A)
    • Try
      • B(E);
      • Threat
        • R1(G)
      • Vars
        • S(h);SBLOCK,XB(E)::R(A)+S(F),DCHECK
      • Refutation
        • S(j);XP(H)
    • Try
      • P(H);
      • Threat
        • DUALS(4)
      • Refutation
        • S(h);XQ(H)
  • Actual
    • Q(C);
    • Threat
      • QAB(C)
    • Vars
      • R(e);XS(D)::R(A)+S(F),DCHECK
      • S(h);SBLOCK::R(A)+S(F),DCHECK
      • R(e);::R(A)+S(F),DCHECK
      • R(e);S_CUTB(c)::QAB(C)
      • R(e);N_GUARD,S_CUTB(a)::S(D),XP(g)
      • R(e);P_PINP(I)::R(A)+S(F),DCHECK
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).