MESON Chess Problem Database

Problem Display
PID: 70378 (2r1N3/Q6K/2P4R/1k2nnR1/8/PPp1r2B/2N5/qb6 w - - 0 1)

Kipping, Cyril Stanley

Chess, 1950

2r1N3/Q6K/2P4R/1k2nnR1/8/PPp1r2B/2N5/qb6

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.a4#
    • 1...Rc7+
      • 2.Sxc7#
    • 1...Ra8
      • 2.Sc7#
    • 1...Rb8
      • 2.Sc7#
    • 1...Rd8
      • 2.Sc7#
    • 1...Ba2
      • 2.a4#
    • 1...Sd3
      • 2.Sd4#
    • 1...Sc4
      • 2.Sd4#
    • 1...Sg4
      • 2.Sd4#
    • 1...Sxc6
      • 2.Sd6#
    • 1...Sg6
      • 2.Sd4#
    • 1...Sd7
      • 2.Sd4#
    • 1...Sf7
      • 2.Sd4#
  • Tries
    • 1.Sd6+?
      • 1...Kxc6
        • 2.Sb4#
      • 1...Sxd6!
    • 1.Qc5+?
      • 1...Ka6
        • 2.Sb4#
      • 1...Kxc5!
    • 1.Qa4+?
      • 1...Kc5
        • 2.Qa5#
      • 1...Kb6!
    • 1.Qa6+?
      • 1...Kc5
        • 2.Qa5#
      • 1...Kxa6!
  • Keys
    • 1.c7!
      • threat
        • 2.Qb6#
      • 1...Rxc7+
        • 2.Sxc7#
      • 1...Sxh6
        • 2.Bd7#
      • 1...Sg6
        • 2.Sd4#
      • 1...Sd6
        • 2.Bd7#
      • 1...Rb8
        • 2.cxb8Q#
        • 2.cxb8R#
      • 1...Sc4
        • 2.Sd4#
      • 1...Sc6
        • 2.Sd6#
      • 1...Sd7
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::P(B)
    • R(h);CHECK,N_GUARD::S(J),XR(h)
    • R(h);N_GUARD::S(J)
    • B(b);S_CUTQ(a)::P(B)
    • S(f);P_SPINS(g)::S(A)
    • S(f);P_SPINS(g),SBLOCK,XP(F)::S(J)
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • K(e);S_FLIGHT,XP(F)::S(A)
      • Refutation
        • S(g);P_PINS(A),P_SPINS(f),XS(J)
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);S_FLIGHT::S(A)
      • Refutation
        • K(e);P-FLIGHT,XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR2(H)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR2(H)
      • Refutation
        • K(e);S_FLIGHT,XQ(H)
  • Actual
    • P(F);
    • Threat
      • QAR1(H)
    • Vars
      • R(h);CHECK,XP(F)::S(J),XR(h)
      • S(g);OGATE,P_PINS(A),P_SPINS(f),XR(G)::B(D)
      • S(f);P_SPINS(g)::S(A)
      • S(g);OGATE,P_PINS(A),P_SPINS(f)::B(D)
      • R(h);OGATE::PXR(h)=Q
      • S(f);P_SPINS(g),SBLOCK::S(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).