MESON Chess Problem Database

Problem Display
PID: 157749 (8/2n2nR1/1R2b3/3p1kpB/3p4/Q5P1/2KN4/B4N2 w - - 0 1)

Mead, Walter

Leeds Mercury Weekly Supplement, 1880

(First published on Sat Oct 30 1880)

8/2n2nR1/1R2b3/3p1kpB/3p4/Q5P1/2KN4/B4N2

#2

9 + 7

15239 Valois Notebooks 2016

SOLUTION

  • SOUND
  • Sets
    • 1...d3+
      • 2.Qxd3#
  • Tries
    • 1.Bxd4?
      • threat
        • 2.Se3#
        • 2.Qd3#
        • 2.Qf3#
      • 1...Sd6
        • 2.Se3#
        • 2.Qf3#
      • 1...g4
        • 2.Se3#
        • 2.Bxg4#
        • 2.Qd3#
      • 1...Se5!
    • 1.Rxf7+?
      • 1...Ke5
        • 2.Qd6#
        • 2.Qe3#
      • 1...Bxf7!
    • 1.Qd3+?
      • 1...Ke5
        • 2.Bxd4#
      • 1...Kf6!
  • Keys
    • 1.Qe3!
      • 1...d3+
        • 2.Qxd3#
      • 1...Kf6
        • 2.Rxf7#
      • 1...dxe3
        • 2.Sxe3#
      • 1...Bd7
        • 2.Rxf7#
        • 2.g4#
      • 1...Bc8
        • 2.Rxf7#
        • 2.g4#
      • 1...Sb5
        • 2.Qxe6#
      • 1...Sa6
        • 2.Qxe6#
      • 1...Sa8
        • 2.Qxe6#
      • 1...Se8
        • 2.Qxe6#
      • 1...Se5
        • 2.Qxg5#
      • 1...Sd6
        • 2.Qxg5#
      • 1...Sh6
        • 2.Qxg5#
      • 1...Sd8
        • 2.Qxg5#
      • 1...Sh8
        • 2.Qxg5#
      • 1...g4
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • P(a);CHECK::QAB(E),XP(a)
  • Tries
    • Try
      • B(A);XP(a)
      • Threat
        • DUALS(3)
      • Refutation
        • S(g);
    • Try
      • R(I);CHECK,XS(g)
      • Refutation
        • B(e);XR(I)
    • Try
      • Q(E);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINP(a)::B(A),XP(a)
      • Refutation
        • K(c);P-FLIGHT,P_SPINB(e),P_SPINP(a)
  • Actual
    • Q(E);
    • Vars
      • P(a);CHECK::QAB(E),XP(a)
      • K(c);P-FLIGHT,P_SPINB(e),P_SPINP(a)::R1(I),XS(g)
      • P(a);XQ(E)::S(B),XP(a)
      • S(f);N_GUARD::QAB1(E),XB(e)
      • S(g);N_GUARD,SBLOCK::QAR1(E),XP(d)
      • S(g);N_GUARD::QAR1(E),XP(d)
      • P(d);N_GUARD::QAR1(E)
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