MESON Chess Problem Database

Problem Display
PID: 79565 (8/8/1PN5/2K3p1/k1N3QR/2q5/1BP5/8 w - - 0 1)

Morse, Christopher Jeremy

The Tablet, 1966

(First published on Sat Jun 25 1966)

8/8/1PN5/2K3p1/k1N3QR/2q5/1BP5/8

#2

8 + 3

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2
      • 2.Sxd2#
    • 1...Qa5+
      • 2.S4xa5#
    • 1...Qe5+
      • 2.S4xe5#
    • 1...Qg7
      • 2.S4e5#
    • 1...Qh8
      • 2.S4e5#
    • 1...Qa3+
      • 2.Sxa3#
    • 1...Qe3+
      • 2.Sxe3#
    • 1...Qxc4+
      • 2.Qxc4#
  • Keys
    • 1.Qd7!
      • threat
        • 2.Sb4#
        • 2.Sd4#
        • 2.Sa5#
        • 2.Se5#
        • 2.Sa7#
        • 2.Se7#
        • 2.Sb8#
        • 2.Sd8#
      • 1...Qb4+
        • 2.Sxb4#
      • 1...Qd4+
        • 2.Sxd4#
      • 1...Qa5+
        • 2.S6xa5#
      • 1...Qe5+
        • 2.S6xe5#
      • 1...Qa3+
        • 2.Sb4#
      • 1...Qe3+
        • 2.Sd4#
      • 1...Qxc4+
        • 2.Rxc4#
      • 1...Qxb2
        • 2.Sb4#
        • 2.Qa7#
      • 1...Qxc2
        • 2.Sd4#
        • 2.Sa5#
      • 1...Qd2
        • 2.Sd4#
      • 1...Qf6
        • 2.Qa7#
      • 1...Qg7
        • 2.Se7#
      • 1...Qb3
        • 2.Sb4#
        • 2.Qa7#
      • 1...Qd3
        • 2.Sd4#
        • 2.Qa7#
      • 1...Qf3
        • 2.Qa7#
      • 1...Qh3
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 7
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(a);N_PINS(C)::QAR(D)+S(C),XQ(a)
    • Q(a);CHECK,N_PINS(C)::QAR(D)+S(C),XQ(a)
    • Q(a);N_PINS(C)::QAR(D)+S(C)
    • Q(a);CHECK,OGATE,P_SPINQ(a),XS(C)::QAR2(D),XQ(a)
  • Actual
    • Q(D);
    • Threat
      • DUALS(8)
    • Vars
      • Q(a);CHECK,N_PINS(C)::QAB(D)+S(H),XQ(a)
      • Q(a);CHECK,N_PINS(C)::QAB(D)+S(H)
      • Q(a);CHECK,OGATE,P_SPINQ(a),XS(C)::R(E),XQ(a)
      • Q(a);N_PINS(C)::QAB(D)+S(H)
      • Q(a);N_GUARD,N_PINS(C)::QAR(D)
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