MESON Chess Problem Database

Problem Display
PID: 35976 (3Q1BBn/2n5/3NP1p1/Rp1k2rp/2pN2b1/2P2p2/5K2/8 w - - 0 1)

Eddy, Edwin John

2nd Comm., BCF 004. Ty., 1930-1931

3Q1BBn/2n5/3NP1p1/Rp1k2rp/2pN2b1/2P2p2/5K2/8

#2

9 + 10

5454 Near Snap 2007
6388 ChessMoves 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Sc8#
    • 1...Bxe6
      • 2.Qxg5#
    • 1...Sxe6
      • 2.Rxb5#
    • 1...Sa8
      • 2.Rxb5#
    • 1...Se8
      • 2.Rxb5#
  • Tries
    • 1.Qa8+?
      • 1...Kc5
        • 2.Sc8#
        • 2.Qc6#
      • 1...Sxa8
        • 2.Rxb5#
      • 1...Ke5!
  • Keys
    • 1.Ke3!
      • threat
        • 2.Sf7#
      • 1...Re5+
        • 2.Se4#
      • 1...Kc5
        • 2.Sc8#
      • 1...Ke5
        • 2.Sxc4#
      • 1...Bxe6
        • 2.Qxg5#
      • 1...Sxe6
        • 2.Rxb5#
      • 1...Se8
        • 2.Rxb5#
      • 1...Sf7
        • 2.Sxf7#

This anticipates 56789(1931)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(e);P-FLIGHT::B(H)+S(E)
    • B(c);N_GUARD,P_SPINB(c),XP(F)::QAR(G),XR(f)
    • S(i);N_GUARD,P_SPINS(i),XP(F)::R(D),XP(d)
    • S(i);N_GUARD::R(D),XP(d)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • S(i);XQ(G)::R(D),XP(d)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAR(G)+S(E)
    • Vars
      • R(f);CHECK,SBLOCK::QAR(G)+S(E)
      • K(e);P-FLIGHT::B(H)+S(E)
      • K(e);P-FLIGHT::S(E),XP(b)
      • B(c);N_GUARD,P_SPINB(c),XP(F)::QAR(G),XR(f)
      • S(i);N_GUARD,P_SPINS(i),XP(F)::R(D),XP(d)
      • S(i);N_GUARD::R(D),XP(d)
      • S(j);::QAR(G)+S(E),XS(j)
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