MESON Chess Problem Database

Problem Display
PID: 154534 (1N6/p1p5/4pQ2/kpK1pP2/2p2R2/3B1nR1/3N4/8 w - - 0 1)

Grindley, AT

Sheffield Guardian (The), 1911

(First published on Fri Mar 31 1911)

1N6/p1p5/4pQ2/kpK1pP2/2p2R2/3B1nR1/3N4/8

#2

8 + 8

15239 Valois Notebooks 2015

SOLUTION

  • SOUND
  • Sets
    • 1...cxd3
      • 2.Sb3#
    • 1...c3
      • 2.Sb3#
    • 1...exf4
      • 2.Qa1#
    • 1...e4
      • 2.Qa1#
    • 1...exf5
      • 2.Qa6#
  • Tries
    • 1.Sxc4+?
      • 1...Ka4
        • 2.Bc2#
      • 1...bxc4!
    • 1.Qxe6?
      • threat
        • 2.Qa6#
      • 1...Ka4
        • 2.Qa6#
      • 1...a6
        • 2.Qxa6#
      • 1...c6!
  • Keys
    • 1.Bc2!
      • 1...Sxd2
        • 2.Ra3#
      • 1...exf4
        • 2.Qa1#
      • 1...exf5
        • 2.Qa6#
      • 1...b4
        • 2.Sxc4#
      • 1...Se1
        • 2.Ra3#
      • 1...Sg1
        • 2.Ra3#
      • 1...Sh2
        • 2.Ra3#
      • 1...Sd4
        • 2.Ra3#
      • 1...Sh4
        • 2.Ra3#
      • 1...Sg5
        • 2.Ra3#
      • 1...c3
        • 2.Sb3#
      • 1...e4
        • 2.Qa1#
      • 1...a6
        • 2.Sc6#
      • 1...c6
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • P(b);N_GUARD,XB(B)::S(A)
    • P(b);N_GUARD::S(A)
    • P(e);OGATE,XR(D)::QAR(G)
    • P(e);OGATE::QAR(G)
    • P(f);OGATE,XP(F)::QAR1(G)
  • Tries
    • Try
      • S(A);CHECK,XP(b)
      • Vars
        • K(c);P-FLIGHT::B(B)
      • Refutation
        • P(d);XS(A)
    • Try
      • Q(G);XP(f)
      • Threat
        • QAR1(G)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(b)::QAR2(G)
        • P(g);::QAR1(G),XP(g)
      • Refutation
        • P(h);
  • Actual
    • B(B);
    • Vars
      • S(a);OGATE,XS(A)::R(C)
      • P(e);OGATE,XR(D)::QAR(G)
      • P(f);OGATE,XP(F)::QAR1(G)
      • P(d);N_GUARD::S(A),XP(b)
      • S(a);OGATE::R(C)
      • P(b);N_GUARD::S(A)
      • P(e);OGATE::QAR(G)
      • P(g);SBLOCK::S(H)
      • P(h);OGATEB::QAB(G)
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