MESON Chess Problem Database

Problem Display
PID: 66851 (1n3K2/5Qp1/1Nk3pb/P1B1P3/P2P2r1/3R3r/6q1/5R1B w - - 0 1)

Kipping, Cyril Stanley

Chess, 1947

1n3K2/5Qp1/1Nk3pb/P1B1P3/P2P2r1/3R3r/6q1/5R1B

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Bxd5#
    • 1...Sa6
      • 2.Qd7#
    • 1...Sd7+
      • 2.Qxd7#
  • Tries
    • 1.Qe6+?
      • 1...Kc7
        • 2.Qc8#
      • 1...Kb7!
    • 1.Qe8+?
      • 1...Kc7
        • 2.Qc8#
      • 1...Sd7+
        • 2.Qxd7#
      • 1...Kb7!
    • 1.d5+?
      • 1...Kxc5
        • 2.Qe7#
      • 1...Qxd5!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qc7#
      • 1...Sd7+
        • 2.Qxd7#
      • 1...Qf3
        • 2.Rc3#
      • 1...Rf3
        • 2.d5#
      • 1...Rf4
        • 2.Rc1#
      • 1...Sa6
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(a);OGATE::B(B),XQ(a)
    • S(h);N_GUARD::QAB1(J)
    • S(h);CHECK,N_GUARD::QAB1(J),XS(h)
  • Tries
    • Try
      • Q(J);CHECK
      • Vars
        • K(d);N_SPINQ(a),P-FLIGHT::QAR1(J)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(J);CHECK
      • Vars
        • K(d);N_SPINQ(a),P-FLIGHT::QAR1(J)
        • S(h);CHECK,N_GUARD,P_SPINS(h)::QAB1(J),XS(h)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • P(E);CHECK,N_PINQ(a)
      • Vars
        • K(d);P-FLIGHT,XB(G)::QAB(J)
      • Refutation
        • Q(a);P_SPINQ(a),XP(E)
  • Actual
    • B(G);
    • Threat
      • QAR1(J)
    • Vars
      • S(h);CHECK,N_GUARD::QAB1(J),XS(h)
      • Q(a);P_PINQ(J),S_CUTR(b)::R(C)
      • R(b);N_SPINQ(a),P_PINQ(J),S_CUTQ(a)::P(E)
      • R(c);P_PINQ(J),S_CUTB(f)::R(A)
      • S(h);N_GUARD::QAB1(J)
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