MESON Chess Problem Database

Problem Display
PID: 272407 (5B2/5K2/4R3/np1kN3/1p6/1q1pP3/Q1Nn4/2R3b1 w - - 0 1)

Caine, Walter Edmund

Eddy, Edwin John

2nd Prize, Sunday Referee, 1934

(First published on Sun Jul 1 1934)

5B2/5K2/4R3/np1kN3/1p6/1q1pP3/Q1Nn4/2R3b1

#2

8 + 8

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Sxb4#
    • 1...Sc4
      • 2.Qa8#
  • Tries
    • 1.Sd7?
      • threat
        • 2.Sxb4#
        • 2.Sb6#
      • 1...Kc4
        • 2.Sxb4#
      • 1...dxc2
        • 2.Sb6#
      • 1...Sc6
        • 2.Sb6#
      • 1...Sdc4
        • 2.Sf6#
        • 2.e4#
      • 1...Sac4
        • 2.Sf6#
        • 2.Qa8#
      • 1...Bxe3!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sb6#
      • 1...Kxc4
        • 2.Sxb4#
      • 1...Qxc4
        • 2.Sxb4#
      • 1...Bxe3
        • 2.S4xe3#
      • 1...Sdxc4
        • 2.e4#
      • 1...Saxc4
        • 2.Qa8#
      • 1...bxc4
        • 2.Qxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • S(b);SBLOCK::S(C),XP(e)
    • S(f);N_SPINQ(c),OGATE::QAB(B)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(h);S_FLIGHT::R(A)+S(C),XP(e)
        • P(d);XS(C)::S(E)
        • S(f);::S(E)
      • Refutation
        • B(a);XP(D)
  • Actual
    • S(E);N_PINQ(c)
    • Threat
      • S(E)
    • Vars
      • K(h);P_SPINQ(c),S_FLIGHT,XS(E)::R(A)+S(C),XP(e)
      • Q(c);N_GUARD,P_SPINQ(c),XS(E)::S(C),XP(e)
      • B(a);XP(D)::S(E),XB(a)
      • S(b);N_GUARD,SBLOCK,XS(E)::P(D)
      • S(f);OGATE,SBLOCK,XS(E)::QAB(B)
      • P(g);OGATEB,SBLOCK,XS(E)::QAR(B),XS(f)
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