MESON Chess Problem Database

Problem Display
PID: 132755 (B2bn3/pr2P2K/pqk1PpN1/Pp6/1B1pPQ2/3P4/2N5/8 w - - 0 1)

Rendall, JL

The Field, 1958

(First published on Thu Jul 24 1958)

B2bn3/pr2P2K/pqk1PpN1/Pp6/1B1pPQ2/3P4/2N5/8

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qc7
      • 2.Sxd4#
    • 1...Bxe7
      • 2.Sxe7#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sc7
      • 2.Qd6#
      • 2.exd8S#
    • 1...Sg7
      • 2.Qd6#
  • Tries
    • 1.Bxb7+?
      • 1...Qxb7
        • 2.Sxd4#
      • 1...Kxb7!
  • Keys
    • 1.Qb8!
      • 1...Qxa5
        • 2.Qxb7#
      • 1...Bxe7
        • 2.Sxe7#
      • 1...Bc7
        • 2.Qxe8#
      • 1...Qc5
        • 2.Bxb7#
      • 1...Qc7
        • 2.Sxd4#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sc7
        • 2.exd8S#
      • 1...Sg7
        • 2.Qd6#
      • 1...f5
        • 2.Se5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • Q(d);N_GUARD::S(A),XP(a)
    • B(i);XP(I)::S(H),XB(i)
    • S(j);N_GUARD::QAR1(E),XS(j)
    • S(j);N_GUARD,N_PINP(I)::QAR1(E)
  • Tries
    • Try
      • B(K);CHECK,N_SPINP(I),XR(h)
      • Vars
        • Q(d);P_PINP(I),SBLOCK,XB(K)::S(A),XP(a)
      • Refutation
        • K(e);S_FLIGHT,XB(K)
  • Actual
    • Q(E);
    • Vars
      • Q(d);N_GUARD,XP(F)::QAB1(E),XR(h)
      • B(i);XP(I)::S(H),XB(i)
      • B(i);N_PINP(I),OGATE,SBLOCK::QAB(E),XS(j)
      • Q(d);N_GUARD::B(K),XR(h)
      • Q(d);N_GUARD::S(A),XP(a)
      • S(j);N_GUARD::QAR1(E),XS(j)
      • S(j);N_PINP(I)::PXB(i)=S
      • S(j);N_GUARD,N_PINP(I)::QAR1(E)
      • P(f);N_GUARD::S(H)
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