MESON Chess Problem Database

Problem Display
PID: 133330 (1b6/1Rp2R2/8/8/pPk1p3/r4NQK/b1pnpP2/B7 w - - 0 1)

Lytton, Cedric C (was Sells, CCL)

The Field, 1960

(First published on Thu Dec 22 1960)

1b6/1Rp2R2/8/8/pPk1p3/r4NQK/b1pnpP2/B7

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kb3
      • 2.Sxd2#
    • 1...Kd3
      • 2.Se5#
  • Tries
    • 1.Rfxc7+?
      • 1...Kb3
        • 2.Sxd2#
        • 2.Sd4#
        • 2.Rc3#
      • 1...Kd3
        • 2.Se1#
        • 2.Se5#
      • 1...Kd5
        • 2.Qe5#
      • 1...Bxc7!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Rd7#
      • 1...Rxf3+
        • 2.Rxf3#
      • 1...Kb3
        • 2.Sxd2#
      • 1...Kd3
        • 2.Se5#
      • 1...Kd5
        • 2.Rf6#
      • 1...Rd3
        • 2.Rfxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(g);S_FLIGHT::QAR(D)+S(C),DCHECK,XS(c)
    • K(g);S_FLIGHT::QAR(D)+S(C),DCHECK
  • Tries
    • Try
      • R(H);CHECK,XP(i)
      • Vars
        • K(g);S_FLIGHT::QAR1(D)
      • Refutation
        • B(j);XR(H)
  • Actual
    • Q(D);P_SPINS(C)
    • Threat
      • QAB(D)+R(H)
    • Vars
      • R(e);CHECK,OGATE,XS(C)::QAB(D)+R(H),XR(e)
      • K(g);N_PINS(C),S_FLIGHT::S(C),XS(c)
      • K(g);N_PINS(C),S_FLIGHT::S(C)
      • K(g);S_FLIGHT::QAB(D)+R(H)
      • R(e);SBLOCK::QAB(D)+R(H),DCHECK,XP(i)
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