MESON Chess Problem Database

Problem Display
PID: 21553 (4R3/pK3pp1/Qp2Np1r/3kPR1p/1P2p1N1/8/1p1nr3/5bb1 w - - 0 1)

Blake, Percy Francis

Manchester Weekly Times, 1919

4R3/pK3pp1/Qp2Np1r/3kPR1p/1P2p1N1/8/1p1nr3/5bb1

#2

8 + 14

SOLUTION

  • SOUND
  • Sets
    • 1...Rf2
      • 2.Se3#
    • 1...Bh2
      • 2.Qb5#
    • 1...Bd4
      • 2.Sf4#
      • 2.Sc7#
    • 1...Sb1
      • 2.Qa2#
    • 1...Sf3
      • 2.Qa2#
    • 1...e3
      • 2.Qd3#
    • 1...b5
      • 2.Qc6#
    • 1...fxe6
      • 2.Rd8#
    • 1...g6
      • 2.Sxf6#
  • Tries
    • 1.Qd3+?
      • 1...Bd4
        • 2.Sf4#
        • 2.Sc7#
        • 2.Qxd4#
      • 1...exd3!
    • 1.Qa2+?
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sc4!
  • Keys
    • 1.Kc7!
      • threat
        • 2.exf6#
      • 1...fxe5
        • 2.Rxe5#
      • 1...fxe6
        • 2.Rd8#
      • 1...e3
        • 2.Qd3#
      • 1...b5
        • 2.Qc6#
      • 1...Rf2
        • 2.Se3#
      • 1...Bh2
        • 2.Qb5#
      • 1...Bd4
        • 2.Sf4#
      • 1...Sf3
        • 2.Qa2#
      • 1...Sc4
        • 2.Qb7#
      • 1...g6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(e);N_GUARD,S_CUTB(b)::S(B)
    • B(b);N_GUARD::QAR2(E)
    • S(d);N_GUARD::QAB(E)
    • P(f);N_GUARD,S_CUTB(b)::QAR2(E)
    • P(i);OGATE::QAB1(E)
    • P(m);SBLOCK,XS(F)::R(H)
    • P(n);N_GUARD,S_CUTR(k)::S(B),XP(j)
  • Tries
    • Try
      • Q(E);CHECK
      • Refutation
        • P(f);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • S(d);N_GUARD,P_SPINS(d)::QAB(E),XS(d)
      • Refutation
        • S(d);P_SPINS(d)
  • Actual
    • K(G);P-FLIGHT
    • Threat
      • R(D)+P(C),XP(j)
    • Vars
      • P(j);OGATE,P_SPINP(j),XP(C)::R1(D),XP(j)
      • P(m);SBLOCK,XS(F)::R(H)
      • P(f);N_GUARD,S_CUTB(b)::QAR2(E)
      • P(i);OGATE::QAB1(E)
      • R(e);N_GUARD,S_CUTB(b)::S(B)
      • B(b);N_GUARD,P_PINP(C)::QAR2(E)
      • B(b);SBLOCK::S(F)
      • S(d);N_GUARD::QAB(E)
      • S(d);SBLOCK::QAB(E)
      • P(n);N_GUARD,S_CUTR(k)::S(B),XP(j)
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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).