MESON Chess Problem Database

Problem Display
PID: 68914 (8/2p4B/2p3R1/3n1k2/3P4/nQp2P2/4N3/7K w - - 0 1)

Gleave, Walter

2nd Prize, Pen & Pencil, 1889

(First published on Sat Aug 31 1889)

8/2p4B/2p3R1/3n1k2/3P4/nQp2P2/4N3/7K

#2

7 + 6

15 British Chess Magazine 1890
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Qc2#
    • 1...Sc2
      • 2.Qxc2#
    • 1...Sc4
      • 2.Qc2#
    • 1...Sb5
      • 2.Qc2#
    • 1...Se3
      • 2.Qe6#
      • 2.Qf7#
    • 1...Sb4
      • 2.Qe6#
      • 2.Qf7#
    • 1...Sf4
      • 2.Sg3#
      • 2.Qf7#
    • 1...Sb6
      • 2.Qe6#
      • 2.Qf7#
    • 1...Se7
      • 2.Qe6#
      • 2.Qf7#
    • 1...c2
      • 2.Qd3#
    • 1...c5
      • 2.Qxd5#
  • Tries
    • 1.Kg1?
      • 1...Sb1
        • 2.Qc2#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sc4
        • 2.Qc2#
      • 1...Sb5
        • 2.Qc2#
      • 1...Se3
        • 2.Qe6#
        • 2.Qf7#
      • 1...Sb4
        • 2.Qe6#
        • 2.Qf7#
      • 1...Sf4
        • 2.Sg3#
        • 2.Qf7#
      • 1...Sb6
        • 2.Qe6#
        • 2.Qf7#
      • 1...Se7
        • 2.Qe6#
        • 2.Qf7#
      • 1...c2
        • 2.Qd3#
      • 1...c5
        • 2.Qxd5#
      • 1...Sf6!
    • 1.Kh2?
      • 1...Sb1
        • 2.Qc2#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sc4
        • 2.Qc2#
      • 1...Sb5
        • 2.Qc2#
      • 1...Se3
        • 2.Qe6#
        • 2.Qf7#
      • 1...Sb4
        • 2.Qe6#
        • 2.Qf7#
      • 1...Sf4
        • 2.Sg3#
        • 2.Qf7#
      • 1...Sb6
        • 2.Qe6#
        • 2.Qf7#
      • 1...Se7
        • 2.Qe6#
        • 2.Qf7#
      • 1...c2
        • 2.Qd3#
      • 1...c5
        • 2.Qxd5#
      • 1...Sf6!
    • 1.Qb8?
      • threat
        • 2.Qc8#
      • 1...Sf4
        • 2.Sg3#
        • 2.Qf8#
      • 1...Sb6
        • 2.Qf8#
      • 1...Se7
        • 2.Qf8#
      • 1...Sf6!
  • Keys
    • 1.f4!
      • 1...Ke4
        • 2.Rg3#
      • 1...Sxf4
        • 2.Sg3#
      • 1...Sf6
        • 2.Rg5#
      • 1...Sb1
        • 2.Qc2#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sc4
        • 2.Qc2#
      • 1...Sb5
        • 2.Qc2#
      • 1...Se3
        • 2.Qe6#
      • 1...Sb4
        • 2.Qe6#
      • 1...Sb6
        • 2.Qe6#
      • 1...Se7
        • 2.Qe6#
      • 1...c2
        • 2.Qd3#
      • 1...c5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB(C)
    • S(a);N_GUARD::QAB(C),XS(a)
    • P(b);OGATE::QAB(C)
    • P(e);N_GUARD::QAR2(C),XS(c)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(a);N_GUARD::QAB(C)
        • S(a);N_GUARD::QAB(C),XS(a)
        • P(b);OGATE::QAB(C)
        • P(e);N_GUARD::QAR2(C),XS(c)
      • Refutation
        • S(c);
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(a);N_GUARD::QAB(C)
        • S(a);N_GUARD::QAB(C),XS(a)
        • P(b);OGATE::QAB(C)
        • P(e);N_GUARD::QAR2(C),XS(c)
      • Refutation
        • S(c);
    • Try
      • Q(C);
      • Threat
        • QAB(C)
      • Vars
        • S(c);N_GUARD::QAR(C)
      • Refutation
        • S(c);
  • Actual
    • P(D);
    • Vars
      • K(d);S_FLIGHT::B(G)+R(F)
      • S(c);SBLOCK,XP(D)::S(B)
      • S(c);SBLOCK::B(G)+R(F),DCHECK
      • S(a);N_GUARD::QAB(C)
      • S(a);N_GUARD::QAB(C),XS(a)
      • S(c);OGATE::QAB1(C)
      • P(b);OGATE::QAB(C)
      • P(e);N_GUARD::QAR2(C),XS(c)
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