MESON Chess Problem Database

Problem Display
PID: 79274 (N1Q5/8/PR1Pr3/n1Bk4/3br3/3P1N2/K2R4/1B6 w - - 0 1)

Davey, David Murray

The Tablet, 1963

(First published on Sat Jun 1 1963)

N1Q5/8/PR1Pr3/n1Bk4/3br3/3P1N2/K2R4/1B6

#2

11 + 5

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd6
      • 2.Rxd6#
    • 1...Bxc5
      • 2.Sc7#
    • 1...Sb3
      • 2.Qc6#
    • 1...Sc4
      • 2.Qc6#
    • 1...Sc6
      • 2.Qxc6#
    • 1...Sb7
      • 2.Qc6#
  • Tries
    • 1.Ba3?
      • threat
        • 2.Sc7#
      • 1...Bxb6
        • 2.Sxb6#
        • 2.dxe4#
      • 1...Re7!
    • 1.Bb4?
      • threat
        • 2.Sc7#
      • 1...Bxb6
        • 2.Sxb6#
        • 2.dxe4#
      • 1...Re7!
    • 1.Rb4?
      • threat
        • 2.Sb6#
      • 1...Rxd6
        • 2.dxe4#
      • 1...Bxc5
        • 2.dxe4#
      • 1...Sc4
        • 2.dxc4#
      • 1...Sc6!
  • Keys
    • 1.Rb5!
      • threat
        • 2.Sb6#
      • 1...Rxd6
        • 2.Bxd4#
      • 1...Bxc5
        • 2.Qxc5#
      • 1...Sc4
        • 2.Qb7#

This is after

This is after Hermanson.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(e);OGATE,XP(I)::R1(H),XR(e)
    • B(a);SBLOCK,XB(F)::S(J)
    • S(c);N_GUARD::QAB1(K)
    • S(c);N_GUARD::QAB1(K),XS(c)
  • Tries
    • Try
      • B(F);
      • Threat
        • S(J)
      • Refutation
        • R(e);
    • Try
      • B(F);
      • Threat
        • S(J)
      • Refutation
        • R(e);
    • Try
      • R(H);
      • Threat
        • S(J)
      • Vars
        • R(e);N_GUARD,XP(I)::P(D),XR(b)
        • B(a);XB(F)::R(C)+P(D)DCHECK,XR(b)
        • S(c);OGATE::P(D),XS(c)
      • Refutation
        • S(c);
  • Actual
    • R(H);
    • Threat
      • S(J)
    • Vars
      • R(e);SBLOCK,XP(I)::R(H)+B(F),XB(a)
      • B(a);OGATE,P_SPINB(a),XB(F)::QAR1(K),XB(a)
      • S(c);N_GUARD::QAB(K)
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