MESON Chess Problem Database

Problem Display
PID: 272857 (N3B3/B1p2N1K/8/1R2n3/1pkb4/2p4Q/P3n3/8 w - - 0 1)

Harrop, N

Liverpool Weekly Mercury, 1902

(First published on Sat Oct 18 1902)

N3B3/B1p2N1K/8/1R2n3/1pkb4/2p4Q/P3n3/8

#2

8 + 7

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Sxe5#
    • 1...Bf2
      • 2.Sxe5#
    • 1...Be3
      • 2.Sxe5#
    • 1...Sd3
      • 2.Qe6#
    • 1...c2
      • 2.Qb3#
    • 1...b3
      • 2.axb3#
    • 1...c5
      • 2.Sb6#
    • 1...c6
      • 2.Sd6#
  • Tries
    • 1.Sb6+?
      • 1...cxb6
        • 2.Sd6#
      • 1...Bxb6!
  • Keys
    • 1.Qe3!
      • 1...Bxe3
        • 2.Sxe5#
      • 1...Bxa7
        • 2.Sxe5#
      • 1...Sxf7
        • 2.Qxe2#
      • 1...Bc5
        • 2.Rxc5#
      • 1...Sc6
        • 2.Qxe2#
      • 1...Sd7
        • 2.Qxe2#
      • 1...c5
        • 2.Sb6#
      • 1...c6
        • 2.Sd6#
      • 1...Bb6
        • 2.Sxe5#
      • 1...Sc1
        • 2.Qxd4#
      • 1...Sg1
        • 2.Qxd4#
      • 1...Sg3
        • 2.Qxd4#
      • 1...Sf4
        • 2.Qxd4#
      • 1...Sd3
        • 2.Qe6#
      • 1...Sf3
        • 2.Qxe2#
      • 1...Sg4
        • 2.Qxe2#
      • 1...Sg6
        • 2.Qxe2#
      • 1...c2
        • 2.Qb3#
      • 1...b3
        • 2.axb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 2
  • Sets
    • B(e);N_GUARD::S(E),XS(f)
    • S(f);SBLOCK::QAB(B)
    • P(b);OGATE::QAB1(B)
    • P(c);OGATE::P(A),XP(c)
    • P(g);N_GUARD,S_CUTB(e)::S(G)
    • P(g);N_GUARD::S(E)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • P(g);XS(G)::S(E)
      • Refutation
        • B(e);XS(G)
  • Actual
    • Q(B);
    • Vars
      • B(e);N_GUARD,XQ(B)::S(E),XS(f)
      • B(e);N_GUARD,XB(D)::S(E),XS(f)
      • S(f);N_GUARD,XS(E)::QAB(B),XS(a)
      • B(e);N_GUARD::R1(C),XB(e)
      • S(f);N_GUARD::QAB(B),XS(a)
      • P(g);N_GUARD,S_CUTB(e)::S(G)
      • P(g);N_GUARD::S(E)
      • B(e);N_GUARD::S(E),XS(f)
      • S(a);N_GUARD::QAR1(B),XB(e)
      • S(f);OGATE,SBLOCK::QAB(B)
      • P(b);OGATE::QAB1(B)
      • P(c);OGATE::P(A),XP(c)
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