MESON Chess Problem Database

Problem Display
PID: 57322 (8/B3P3/R1N1rn2/3kbb1R/1PN3pK/2PP2p1/qp2Q3/8 w - - 0 1)

Jerrard, Ernest Haslam Harvey

Comm., Brisbane Courier, 1918-1919

8/B3P3/R1N1rn2/3kbb1R/1PN3pK/2PP2p1/qp2Q3/8

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc6
      • 2.Qxe5#
    • 1...Rd6
      • 2.Qxe5#
    • 1...Rxe7
      • 2.Sxe7#
    • 1...Bxd3
      • 2.Qxd3#
  • Tries
    • 1.Sb8?
      • threat
        • 2.Se3#
      • 1...Qxc4
        • 2.dxc4#
      • 1...Rxa6
        • 2.Qxe5#
      • 1...Bxc3
        • 2.Qxe6#
      • 1...Bxb8
        • 2.Qxe6#
      • 1...Bxd3
        • 2.Qxd3#
      • 1...Rb6
        • 2.Qxe5#
      • 1...Rc6
        • 2.Qxe5#
      • 1...Rd6
        • 2.Qxe5#
      • 1...Bd4
        • 2.Qxe6#
      • 1...Bf4
        • 2.Qxe6#
      • 1...Bd6
        • 2.Sb6#
      • 1...Bc7
        • 2.Qxe6#
      • 1...Qxa6!
    • 1.Sd8?
      • threat
        • 2.Se3#
      • 1...Qxc4
        • 2.dxc4#
      • 1...Rxa6
        • 2.Qxe5#
      • 1...Bxc3
        • 2.Qxe6#
      • 1...Bxd3
        • 2.Qxd3#
      • 1...Rb6
        • 2.Qxe5#
      • 1...Rc6
        • 2.Qxe5#
      • 1...Bd4
        • 2.Qxe6#
      • 1...Bf4
        • 2.Qxe6#
      • 1...Bd6
        • 2.Sb6#
        • 2.Qxe6#
      • 1...Bc7
        • 2.Qxe6#
      • 1...Bb8
        • 2.Qxe6#
      • 1...Qxa6!
  • Keys
    • 1.S6a5!
      • threat
        • 2.Se3#
      • 1...Qxc4
        • 2.dxc4#
      • 1...Rxa6
        • 2.Qxe5#
      • 1...Bxc3
        • 2.Qxe6#
      • 1...Bxd3
        • 2.Qxd3#
      • 1...Rb6
        • 2.Qxe5#
      • 1...Rc6
        • 2.Qxe5#
      • 1...Rd6
        • 2.Qxe5#
      • 1...Bd4
        • 2.Qxe6#
      • 1...Bf4
        • 2.Qxe6#
      • 1...Bd6
        • 2.Sb6#
      • 1...Bc7
        • 2.Qxe6#
      • 1...Bb8
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • R(h);N_GUARD,XS(I)::QAR1(A),XB(f)
    • R(h);N_GUARD::QAR1(A),XB(f)
    • R(h);XP(K)::S(I),XR(h)
    • B(g);OGATE,P_SPINB(f),XP(C)::QAR2(A),XB(g)
  • Tries
    • Try
      • S(I);
      • Threat
        • S(E)
      • Vars
        • Q(a);OGATE,XS(E)::P(C),XQ(a)
        • R(h);N_GUARD,XR(H)::QAR1(A),XB(f)
        • B(f);OGATE,P_SPINB(g),XP(B)::QAB1(A),XR(h)
        • B(f);OGATE,P_SPINB(g),XS(I)::QAB1(A),XR(h)
        • B(g);OGATE,P_SPINB(f),XP(C)::QAR2(A),XB(g)
        • R(h);N_GUARD::QAR1(A),XB(f)
        • B(f);OGATE,P_SPINB(g)::QAB1(A),XR(h)
        • B(f);P_SPINB(g),SBLOCK,S_CUTR(h)::S(E)
      • Refutation
        • Q(a);XR(H)
    • Try
      • S(I);
      • Threat
        • S(E)
      • Vars
        • Q(a);OGATE,XS(E)::P(C),XQ(a)
        • R(h);N_GUARD,XR(H)::QAR1(A),XB(f)
        • B(f);OGATE,P_SPINB(g),XP(B)::QAB1(A),XR(h)
        • B(g);OGATE,P_SPINB(f),XP(C)::QAR2(A),XB(g)
        • R(h);N_GUARD::QAR1(A),XB(f)
        • B(f);OGATE,P_SPINB(g)::QAB1(A),XR(h)
      • Refutation
        • Q(a);XR(H)
  • Actual
    • S(I);
    • Threat
      • S(E)
    • Vars
      • Q(a);OGATE,XS(E)::P(C),XQ(a)
      • R(h);N_GUARD,XR(H)::QAR1(A),XB(f)
      • B(f);OGATE,P_SPINB(g),XP(B)::QAB1(A),XR(h)
      • B(g);OGATE,P_SPINB(f),XP(C)::QAR2(A),XB(g)
      • R(h);N_GUARD::QAR1(A),XB(f)
      • B(f);OGATE,P_SPINB(g)::QAB1(A),XR(h)
      • B(f);P_SPINB(g),SBLOCK,S_CUTR(h)::S(E)
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