MESON Chess Problem Database

Problem Display
PID: 54408 (6B1/1KP2r2/Q1N1k3/1p4R1/bBNP2P1/1p1PPq2/1P3R2/8 w - - 0 1)

Barrow, John Hugh

Newcastle Weekly Chronicle, 1926

6B1/1KP2r2/Q1N1k3/1p4R1/bBNP2P1/1p1PPq2/1P3R2/8

#2

14 + 6

5257 Chess Problems by J H Barrow 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.c8Q#
    • 1...Qd1
      • 2.Sb8#
    • 1...Qe2
      • 2.Sb8#
    • 1...Qxg4
      • 2.Sb8#
    • 1...Qxc6+
      • 2.Qxc6#
    • 1...Qxf2
      • 2.Sb8#
    • 1...Qxe3
      • 2.Sb8#
    • 1...Qh3
      • 2.Sb8#
    • 1...Qf6
      • 2.Sb8#
  • Tries
    • 1.Kc8?
      • threat
        • 2.Sd8#
      • 1...Qxc6
        • 2.Bxf7#
        • 2.Re5#
        • 2.Qxc6#
        • 2.d5#
      • 1...Qf5
        • 2.Se7#
      • 1...Kf6!
    • 1.Rxf3?
      • threat
        • 2.Sb8#
      • 1...Kd7
        • 2.c8Q#
      • 1...bxc4!
    • 1.Re5+?
      • 1...Kd7
        • 2.Sb6#
        • 2.c8Q#
        • 2.c8B#
      • 1...Kf6!
    • 1.Rg6+?
      • 1...Kd5
        • 2.Sb6#
        • 2.Se7#
        • 2.Rd6#
      • 1...Kd7
        • 2.c8Q#
      • 1...Qf6!
  • Keys
    • 1.Se5!
      • 1...Qxc6+
        • 2.Qxc6#
      • 1...Kd5
        • 2.Se7#
      • 1...Kf6
        • 2.Rg6#
      • 1...Qxg4
        • 2.Se7#
        • 2.Bxf7#
      • 1...Qxf2
        • 2.Se7#
      • 1...Qxe3
        • 2.Se7#
        • 2.Bxf7#
      • 1...Qd1
        • 2.Se7#
        • 2.Bxf7#
      • 1...Qh1
        • 2.Bxf7#
      • 1...Qe2
        • 2.Se7#
        • 2.Bxf7#
      • 1...Qg2
        • 2.Bxf7#
      • 1...Qe4
        • 2.Bxf7#
      • 1...Qd5
        • 2.Bxf7#
        • 2.Rg6#
      • 1...Qg3
        • 2.Se7#
        • 2.Bxf7#
      • 1...Qh3
        • 2.Se7#
        • 2.Bxf7#
      • 1...Qf4
        • 2.Se7#
      • 1...Qf5
        • 2.Se7#
      • 1...Qf6
        • 2.Se7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 7
    • REMOVED MATES = 6
  • Sets
    • K(e);N_PINP(M),N_SPINR(f),S_FLIGHT::P=Q
    • Q(b);N_PINS(K)::QAR(J)+S(K)
    • Q(b);N_PINS(K),XP(H)::QAR(J)+S(K)
    • Q(b);CHECK,OGATE,P_SPINQ(b),XS(K)::QAR2(J),XQ(b)
    • Q(b);N_PINS(K),XR(B)::QAR(J)+S(K)
    • Q(b);N_PINS(K),XP(D)::QAR(J)+S(K)
  • Tries
    • Try
      • K(L);N_SPINP(M),N_SPINS(K),S_FLIGHT
      • Threat
        • QAR(J)+S(K),DCHECK
      • Vars
        • Q(b);N_GUARD::QAR(J)+S(K)
      • Refutation
        • K(e);N_SPINR(f),P-FLIGHT,P_SPINQ(b)
    • Try
      • R(B);N_SPINS(K),XQ(b)
      • Threat
        • QAR(J)+S(K)
      • Vars
        • K(e);N_PINP(M),N_SPINR(f),S_FLIGHT::P=Q
      • Refutation
        • P(d);XS(F)
    • Try
      • R(I);CHECK
      • Refutation
        • K(e);N_SPINR(f),P-FLIGHT,P_SPINQ(b)
    • Try
      • R(I);CHECK
      • Vars
        • K(e);N_PINP(M),N_SPINR(f),S_FLIGHT::P=Q
      • Refutation
        • Q(b);N_PINS(K),P_SPINQ(b)
  • Actual
    • S(F);
    • Vars
      • Q(b);CHECK,OGATE,P_SPINQ(b),XS(K)::QAR2(J),XQ(b)
      • K(e);N_PINS(K),S_FLIGHT::S(K)
      • K(e);N_SPINR(f),P-FLIGHT,P_SPINQ(b)::R1(I)
      • Q(b);N_PINS(K),XR(B)::QAR(J)+S(K)
      • Q(b);N_GUARD::B(N),XR(f)
      • Q(b);N_PINS(K)::QAR(J)+S(K)
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