MESON Chess Problem Database

Problem Display
PID: 139643 (K1kbr3/ppp5/1P2P3/5B2/3N4/8/2q5/2RR4 w - - 0 1)

Davis, Edward

Kipping, Cyril Stanley

Source?, 1936

K1kbr3/ppp5/1P2P3/5B2/3N4/8/2q5/2RR4

#2

7 + 7

56 The Problemist 1937

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd1
      • 2.e7#
    • 1...Qxc1
      • 2.e7#
    • 1...Qb2
      • 2.e7#
    • 1...Qd2
      • 2.e7#
    • 1...Qg2
      • 2.e7#
    • 1...Qh2
      • 2.e7#
    • 1...Qc3
      • 2.e7#
    • 1...Rxe6
      • 2.Bxe6#
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sxa7#
      • 1...axb6
        • 2.Sa7#
      • 1...cxb6
        • 2.e7#
      • 1...Qa4
        • 2.Sd6#
        • 2.e7#
      • 1...Qa2
        • 2.Sd6#
      • 1...a5
        • 2.Sa7#
      • 1...a6
        • 2.Sa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD,P_SPINP(d),XR(B)::B(D)+P(F)
    • Q(a);N_GUARD,XR(A)::B(D)+P(F)
    • Q(a);N_GUARD,P_SPINP(d)::B(D)+P(F)
    • Q(a);N_GUARD::B(D)+P(F)
    • R(g);OGATE,P_SPINR(g),XP(F)::B(D),XR(g)
  • Actual
    • S(C);
    • Threat
      • S(C),XP(b)
    • Vars
      • P(b);XP(E)::S(C)
      • P(d);P_SPINQ(a),XP(E)::B(D)+P(F)
      • Q(a);P_SPINP(d)::S(C)
      • P(b);::S(C)
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