MESON Chess Problem Database

Problem Display
PID: 268384 (2k5/1pPNR2p/1R4rr/KP3p2/2BbqB2/2ppp3/6Q1/8 w - - 0 1)

Caine, Walter Edmund

Eddy, Edwin John

Sunday Referee, 1929

(First published on Sun May 19 1929)

2k5/1pPNR2p/1R4rr/KP3p2/2BbqB2/2ppp3/6Q1/8

#2

9 + 11

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4
      • 2.Qxb7#
    • 1...Qe5
      • 2.Qxb7#
    • 1...Qe6
      • 2.Qxb7#
    • 1...Rxb6
      • 2.Qg8#
    • 1...Rc6
      • 2.Qg8#
    • 1...Re6
      • 2.Qg8#
    • 1...Rg8
      • 2.Qxg8#
  • Tries
    • 1.Re8+?
      • 1...Kxd7
        • 2.c8Q#
      • 1...Qxe8!
  • Keys
    • 1.Be6!
      • threat
        • 2.Re8#
      • 1...Bxb6+
        • 2.Sxb6#
      • 1...Qxf4
        • 2.Sf6#
        • 2.Qxb7#
      • 1...Qxe6
        • 2.Qxb7#
      • 1...Rxe6
        • 2.Qg8#
      • 1...Qe5
        • 2.Qxb7#
      • 1...Be5
        • 2.Sf6#
      • 1...Rg8
        • 2.Qxg8#
      • 1...Bf6
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(e);OGATE,XB(C)::QAB1(A),XP(i)
    • Q(e);OGATE,P_PINP(E)::QAB1(A),XP(i)
    • Q(e);OGATE::QAB1(A),XP(i)
    • R(g);OGATE,XR(F)::QAR(A)
    • R(g);OGATE::QAR(A)
    • R(g);OGATE::QAR(A),XR(g)
  • Tries
    • Try
      • R(I);CHECK
      • Vars
        • K(k);OGATE,S_FLIGHT,XS(H)::P=Q
      • Refutation
        • Q(e);XR(I)
  • Actual
    • B(B);
    • Threat
      • R(I)
    • Vars
      • B(d);CHECK,XR(F)::B(B)+S(H),DCHECK,XB(d)
      • Q(e);OGATE,XB(B)::QAB1(A),XP(i)
      • R(g);OGATE,XB(B)::QAR(A)
      • Q(e);OGATE,P_PINP(E)::QAB1(A),XP(i)
      • B(d);S_CUTQ(e)::B(B)+S(H)
      • R(g);OGATE::QAR(A),XR(g)
      • B(d);S_CUTR(g)::B(B)+S(H)
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