MESON Chess Problem Database

Problem Display
PID: 79384 (8/5N1K/8/5k1N/3Pb3/1Q3P2/8/8 w - - 0 1)

Davey, David Murray

The Tablet, 1964

(First published on Sat Nov 7 1964)

8/5N1K/8/5k1N/3Pb3/1Q3P2/8/8

#2

6 + 2

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qd5#
    • 1...Bc2
      • 2.Qd5#
    • 1...Bd3
      • 2.Qd5#
    • 1...Bd5
      • 2.Qxd5#
  • Tries
    • 1.Kh6?
      • threat
        • 2.Sd6#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bxf3!
    • 1.Qe3?
      • threat
        • 2.Qxe4#
      • 1...Bxf3
        • 2.Sh6#
      • 1...Bc6
        • 2.Sd6#
        • 2.Sh6#
        • 2.Qe5#
      • 1...Bb1
        • 2.Sd6#
        • 2.Sh6#
        • 2.Qe5#
      • 1...Bc2
        • 2.Sd6#
        • 2.Sh6#
        • 2.Qe5#
      • 1...Bd3
        • 2.Sd6#
        • 2.Sh6#
        • 2.Qe5#
      • 1...Bd5
        • 2.Sd6#
        • 2.Sh6#
        • 2.Qe5#
      • 1...Bb7
        • 2.Sd6#
        • 2.Sh6#
        • 2.Qe5#
      • 1...Ba8
        • 2.Sd6#
        • 2.Sh6#
        • 2.Qe5#
      • 1...Ke6+!
    • 1.Qb5+?
      • 1...Bd5
        • 2.Qxd5#
      • 1...Ke6+!
    • 1.Qb6?
      • threat
        • 2.Qf6#
        • 2.Qg6#
      • 1...Bxf3
        • 2.Qg6#
      • 1...Bc6!
  • Keys
    • 1.d5!
      • 1...Bxf3
        • 2.Qxf3#
      • 1...Bxd5
        • 2.Qxd5#
      • 1...Bb1
        • 2.Qxb1#
      • 1...Bc2
        • 2.Qxc2#
      • 1...Bd3
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::QAR2(A)
    • B(a);N_GUARD::QAR2(A),XB(a)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Threat
        • S(E)
      • Vars
        • B(a);N_GUARD::QAR2(A),XB(a)
      • Refutation
        • B(a);XP(B)
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XB(a)
      • Vars
        • B(a);XP(B)::S(E)
      • Refutation
        • K(b);CHECK,P_SPINB(a),S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR2(A),XB(a)
      • Refutation
        • K(b);CHECK,S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XP(B)::QAB1(A)
      • Refutation
        • B(a);
  • Actual
    • P(C);
    • Vars
      • B(a);OGATE,XP(B)::QAR2(A),XB(a)
      • B(a);OGATE,XP(C)::QAR2(A),XB(a)
      • B(a);OGATEB::QAB(A),XB(a)
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