MESON Chess Problem Database

Problem Display
PID: 152521 (1n6/Nn6/b2pQ1p1/5p2/1Ppk2pN/3P2B1/p1PP4/K5b1 w - - 0 1)

Colville, Robert A

Hampstead and Highgate Express, 1898

(First published on Sat Dec 31 1898)

1n6/Nn6/b2pQ1p1/5p2/1Ppk2pN/3P2B1/p1PP4/K5b1

#2

9 + 11

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bf2
      • 2.Bxf2#
    • 1...Bh2
      • 2.Bf2#
    • 1...Bb5
      • 2.Sxb5#
    • 1...Sa5
      • 2.Qxd6#
    • 1...Sc5
      • 2.Qxd6#
    • 1...Sd8
      • 2.Qxd6#
    • 1...Sc6
      • 2.Sxc6#
    • 1...Sd7
      • 2.Sc6#
    • 1...cxd3
      • 2.c3#
    • 1...f4
      • 2.Qe4#
    • 1...d5
      • 2.Be5#
      • 2.Qe5#
      • 2.Qf6#
    • 1...g5
      • 2.Sxf5#
  • Tries
    • 1.Bxd6?
      • threat
        • 2.Be5#
        • 2.Qe5#
      • 1...Sxd6
        • 2.Qxd6#
      • 1...cxd3
        • 2.c3#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Sd7
        • 2.Sc6#
      • 1...Bh2!
    • 1.dxc4?
      • threat
        • 2.Qd5#
      • 1...d5
        • 2.Qxd5#
      • 1...Bxc4!
  • Keys
    • 1.Be1!
      • 1...cxd3
        • 2.c3#
      • 1...Be3
        • 2.dxe3#
      • 1...Bf2
        • 2.Bxf2#
      • 1...Bh2
        • 2.Bf2#
      • 1...Bb5
        • 2.Sxb5#
      • 1...Sa5
        • 2.Qxd6#
      • 1...Sc5
        • 2.Qxd6#
      • 1...Sd8
        • 2.Qxd6#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Sd7
        • 2.Sc6#
      • 1...c3
        • 2.dxc3#
      • 1...g3
        • 2.Sf3#
      • 1...f4
        • 2.Qe4#
      • 1...d5
        • 2.Qf6#
      • 1...g5
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::B(E),XB(a)
    • B(a);N_GUARD::B(E)
    • B(g);N_GUARD::S(I),XB(g)
    • S(j);N_GUARD::QAR2(H),XP(h)
    • S(k);N_GUARD::S(I),XS(k)
    • S(k);N_GUARD::S(I)
    • P(c);SBLOCK,XP(D)::P(B)
    • P(f);N_GUARD::QAR1(H)
    • P(i);N_GUARD::S(G),XP(f)
  • Tries
    • Try
      • B(E);XP(h)
      • Threat
        • DUALS(2)
      • Vars
        • S(j);OGATE,XB(E)::QAR2(H),XS(j)
        • P(c);SBLOCK,XP(D)::P(B)
        • S(k);N_GUARD::S(I),XS(k)
        • S(k);N_GUARD::S(I)
      • Refutation
        • B(a);
    • Try
      • P(D);XP(c)
      • Threat
        • QAR1(H)
      • Vars
        • P(h);::QAR1(H),XP(h)
      • Refutation
        • B(g);XP(D)
  • Actual
    • B(E);
    • Vars
      • P(c);SBLOCK,XP(D)::P(B)
      • B(a);OGATE::P(C),XB(a)
      • B(a);N_GUARD::B(E),XB(a)
      • B(a);N_GUARD::B(E)
      • B(g);N_GUARD::S(I),XB(g)
      • S(j);N_GUARD::QAR2(H),XP(h)
      • S(k);N_GUARD::S(I),XS(k)
      • S(k);N_GUARD::S(I)
      • P(c);OGATE::P(C),XP(c)
      • P(e);N_GUARD::S(G)
      • P(f);N_GUARD::QAR1(H)
      • P(h);SBLOCK::QAB(H)
      • P(i);N_GUARD::S(G),XP(f)
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