MESON Chess Problem Database

Problem Display
PID: 132217 (K7/4Np2/2p1P2Q/p1P1krP1/q2n3R/2PR4/3n1N2/2B1r3 w - - 0 1)

Driver, John Edward

The Field, 1956

(First published on Thu May 31 1956)

K7/4Np2/2p1P2Q/p1P1krP1/q2n3R/2PR4/3n1N2/2B1r3

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.cxd4#
    • 1...Qc2
      • 2.cxd4#
    • 1...Qb3
      • 2.cxd4#
    • 1...Qb5
      • 2.cxd4#
    • 1...Qa2
      • 2.cxd4#
    • 1...Qa3
      • 2.cxd4#
    • 1...Rf6
      • 2.Qxf6#
    • 1...Sc4
      • 2.cxd4#
    • 1...Se4
      • 2.Sg4#
    • 1...Sb5
      • 2.Sxc6#
  • Tries
    • 1.Re3+?
      • 1...Se4
        • 2.Sd3#
        • 2.Rhxe4#
      • 1...Rxe3!
    • 1.Re4+?
      • 1...Sxe4
        • 2.Sg4#
      • 1...Rxe4!
  • Keys
    • 1.exf7!
      • threat
        • 2.Qd6#
      • 1...Rf6
        • 2.Qxf6#
      • 1...Sc4
        • 2.cxd4#
      • 1...Se4
        • 2.Sg4#
      • 1...Sb5
        • 2.Sxc6#
      • 1...Se6
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • Q(c);N_GUARD::P(C),XS(d)
    • R(g);N_GUARD::QAB1(I),XR(g)
    • S(b);S_CUTQ(c)::P(C),XS(d)
    • S(b);SBLOCK::S(B)
    • S(d);N_GUARD,S_CUTQ(c)::S(J),XP(h)
  • Tries
    • Try
      • R(D);CHECK
      • Refutation
        • R(a);XR(D)
    • Try
      • R(E);CHECK
      • Vars
        • S(b);SBLOCK,XR(E)::S(B)
      • Refutation
        • R(a);XR(E)
  • Actual
    • P(H);XP(i)
    • Threat
      • QAB1(I)
    • Vars
      • R(g);N_GUARD::QAB1(I),XR(g)
      • S(b);S_CUTQ(c)::P(C),XS(d)
      • S(b);SBLOCK::S(B)
      • S(d);N_GUARD,S_CUTQ(c)::S(J),XP(h)
      • S(d);SBLOCK::S(J)
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