MESON Chess Problem Database

Problem Display
PID: 202692 (K7/5B2/p2B1pp1/2P1b1P1/1p1kP2N/1RNpp3/8/4nQ2 w - - 0 1)

Nield, Joshua

Western Daily Mercury, 1919

(First published on Fri Oct 10 1919)

K7/5B2/p2B1pp1/2P1b1P1/1p1kP2N/1RNpp3/8/4nQ2

#2

10 + 9

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Sf3#
    • 1...Sg2
      • 2.Sf3#
    • 1...Sf3
      • 2.Sxf3#
    • 1...d2
      • 2.Qc4#
    • 1...e2
      • 2.Qg1#
      • 2.Qf2#
    • 1...bxc3
      • 2.Rb4#
  • Tries
    • 1.Qxd3+?
      • 1...Sxd3
        • 2.Sf3#
      • 1...Kxd3!
    • 1.Qf4?
      • 1...Bxd6
        • 2.Qxd6#
      • 1...bxc3
        • 2.Rb4#
      • 1...fxg5
        • 2.Qxe5#
      • 1...d2
        • 2.Se2#
      • 1...Sc2
        • 2.Sf3#
      • 1...Sg2
        • 2.Sf3#
      • 1...Sf3
        • 2.Sxf3#
      • 1...e2
        • 2.Qf2#
      • 1...a5
        • 2.Sb5#
      • 1...f5
        • 2.Qxe5#
      • 1...Bxf4!
  • Keys
    • 1.Qf5!
      • 1...Bxd6
        • 2.Qd5#
      • 1...bxc3
        • 2.Rb4#
      • 1...fxg5
        • 2.Qxe5#
      • 1...gxf5
        • 2.Sxf5#
      • 1...d2
        • 2.Se2#
      • 1...e2
        • 2.Qf2#
      • 1...Bh2
        • 2.Qd5#
      • 1...Bg3
        • 2.Qd5#
      • 1...Bf4
        • 2.Qd5#
      • 1...Sc2
        • 2.Sf3#
      • 1...Sg2
        • 2.Sf3#
      • 1...Sf3
        • 2.Sxf3#
      • 1...a5
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::S(E)
    • S(a);N_GUARD::S(E),XS(a)
    • P(b);OGATE::QAR1(A)
    • P(d);SBLOCK,XS(C)::R(B)
  • Tries
    • Try
      • Q(A);CHECK,XP(b)
      • Vars
        • S(a);SBLOCK,XQ(A)::S(E)
      • Refutation
        • K(e);P-FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Vars
        • B(f);OGATE,XB(H)::QAR2(A),XB(f)
        • P(d);SBLOCK,XS(C)::R(B)
        • P(h);N_GUARD,XP(G)::QAB1(A),XB(f)
        • P(b);N_GUARD::S(C)
        • S(a);N_GUARD::S(E)
        • S(a);N_GUARD::S(E),XS(a)
        • P(c);OGATEB::QAB(A)
        • P(g);N_GUARD::S(C)
        • P(h);N_GUARD::QAB1(A),XB(f)
      • Refutation
        • B(f);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • B(f);OGATE,XB(H)::QAR1(A)
      • P(d);SBLOCK,XS(C)::R(B)
      • P(h);N_GUARD,XP(G)::QAB1(A),XB(f)
      • P(i);XQ(A)::S(E),XP(i)
      • P(b);N_GUARD::S(C)
      • P(c);OGATEB::QAB(A)
      • B(f);OGATE::QAR1(A)
      • S(a);N_GUARD::S(E)
      • S(a);N_GUARD::S(E),XS(a)
      • P(g);N_GUARD::S(C)
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