MESON Chess Problem Database

Problem Display
PID: 150131 (1n1r2bN/3P1p2/3k1NpQ/p5p1/8/K3R2B/8/2R1B2n w - - 0 1)

Gittins, Frederick Richard

Hampstead and Highgate Express, 1895

(First published on Sat Jul 27 1895)

1n1r2bN/3P1p2/3k1NpQ/p5p1/8/K3R2B/8/2R1B2n

#2

9 + 9

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rc8
      • 2.dxc8S#
    • 1...Re8
      • 2.dxe8S#
    • 1...Rf8
      • 2.Qxf8#
    • 1...Bh7
      • 2.Sxf7#
    • 1...Sg3
      • 2.Bxg3#
    • 1...a4
      • 2.Bb4#
    • 1...g4
      • 2.Qf4#
  • Tries
    • 1.Rd3+?
      • 1...Ke5
        • 2.Qxg5#
      • 1...Ke7!
    • 1.Qxg5?
      • threat
        • 2.Se4#
        • 2.Qf4#
        • 2.Qc5#
        • 2.Qd5#
        • 2.Qe5#
      • 1...Sxd7
        • 2.Se4#
        • 2.Qd5#
      • 1...Rc8
        • 2.Se4#
        • 2.Qf4#
        • 2.Qd5#
        • 2.Qe5#
        • 2.dxc8S#
      • 1...Re8
        • 2.Sxe8#
        • 2.Qc5#
        • 2.Qd5#
        • 2.dxe8S#
      • 1...Sf2
        • 2.Qf4#
        • 2.Qg3#
        • 2.Qc5#
        • 2.Qd5#
        • 2.Qe5#
      • 1...Sg3
        • 2.Bxg3#
        • 2.Qf4#
        • 2.Qxg3#
        • 2.Qc5#
        • 2.Qd5#
        • 2.Qe5#
      • 1...Sa6
        • 2.Se4#
        • 2.Qf4#
        • 2.Qd5#
        • 2.Qe5#
      • 1...Sc6!
  • Keys
    • 1.Bg2!
      • 1...Rxd7
        • 2.Se8#
      • 1...Sxd7
        • 2.Rc6#
      • 1...Sc6
        • 2.Rxc6#
      • 1...Rc8
        • 2.dxc8S#
      • 1...Re8
        • 2.dxe8S#
      • 1...Rf8
        • 2.Qxf8#
      • 1...Bh7
        • 2.Sxf7#
      • 1...Sf2
        • 2.Qh2#
      • 1...Sg3
        • 2.Bxg3#
      • 1...Sa6
        • 2.Rc6#
      • 1...a4
        • 2.Bb4#
      • 1...g4
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(h);OGATE::PXR(h)=S
    • R(h);N_GUARD::QAB(G),XR(h)
    • B(i);N_GUARD::S(I),XP(f)
    • S(a);N_GUARD::B(B),XS(a)
    • P(b);N_GUARD::B(B)
    • P(c);OGATE::QAB(G)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR2(G),XP(c)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(G);XP(c)
      • Threat
        • DUALS(5)
      • Refutation
        • S(g);
  • Actual
    • B(E);
    • Vars
      • R(h);N_GUARD,SBLOCK,XP(H)::S(F)
      • S(g);N_GUARD,XP(H)::R1(A)
      • S(g);N_GUARD::R1(A),XS(g)
      • R(h);OGATE::PXR(h)=S
      • R(h);N_GUARD::QAB(G),XR(h)
      • B(i);N_GUARD::S(I),XP(f)
      • S(a);N_GUARD::QAB(G)
      • S(a);N_GUARD::B(B),XS(a)
      • S(g);N_GUARD::R1(A)
      • P(b);N_GUARD::B(B)
      • P(c);OGATE::QAB(G)
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