MESON Chess Problem Database

Problem Display
PID: 148311 (7n/KB1R1PB1/pp2q3/5krP/1r1R2N1/1p1b1PP1/4N3/4b1nQ w - - 0 1)

Andrew, Frederick William

Leeds Mercury Weekly Supplement, 1899

(First published on Sat Apr 22 1899)

7n/KB1R1PB1/pp2q3/5krP/1r1R2N1/1p1b1PP1/4N3/4b1nQ

#2

12 + 11

14868 Pirnie Collection 2013
15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Sxd4#
    • 1...Rb5
      • 2.Rf4#
    • 1...Rxh5
      • 2.Qxh5#
    • 1...Bxg3
      • 2.Sxg3#
    • 1...Bc4
      • 2.Rf4#
    • 1...Be4
      • 2.Se3#
    • 1...Sxf3
      • 2.Qxf3#
    • 1...Sg6
      • 2.Sh6#
  • Tries
    • 1.Be4+?
      • 1...Bxe4
        • 2.Se3#
      • 1...Qxe4!
    • 1.R4d5+?
      • 1...Qe5
        • 2.Rxe5#
      • 1...Qxd5!
    • 1.R7d5+?
      • 1...Qe5
        • 2.Bc8#
        • 2.Rxe5#
      • 1...Qxd5!
  • Keys
    • 1.Bc8!
      • threat
        • 2.R7d5#
      • 1...Qxd7+
        • 2.Bxd7#
      • 1...Qxf7
        • 2.Rxf7#
      • 1...Rxd4
        • 2.Sxd4#
      • 1...Rxh5
        • 2.Qxh5#
      • 1...Bxg3
        • 2.Sxg3#
      • 1...Sxf3
        • 2.Qxf3#
      • 1...Sxf7
        • 2.Rxf7#
      • 1...Qd5
        • 2.R7xd5#
      • 1...Qd6
        • 2.R7xd6#
      • 1...Qe7
        • 2.Rxe7#
      • 1...Rb5
        • 2.Rf4#
      • 1...Bc4
        • 2.Rf4#
      • 1...Be4
        • 2.Se3#
      • 1...Sg6
        • 2.Sh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(e);XR(E)::S(B),XR(e)
    • R(e);N_GUARD::R1(E)
    • R(g);OGATE,XP(G)::QAR2(A),XR(g)
    • B(a);XP(D)::S(B),XB(a)
    • B(d);S_CUTR(e)::R1(E)
    • B(d);S_CUTQ(j)::S(F)
    • S(b);OGATE,XP(C)::QAR2(A),XS(b)
    • S(k);S_CUTQ(j)::S(F)
  • Tries
    • Try
      • B(I);CHECK
      • Vars
        • B(d);XB(I)::S(F)
      • Refutation
        • Q(j);XB(I)
    • Try
      • R(E);CHECK
      • Vars
        • Q(j);N_GUARD,P_SPINQ(j)::R1(E),XQ(j)
      • Refutation
        • Q(j);XR(E)
    • Try
      • R(J);CHECK
      • Refutation
        • Q(j);XR(J)
  • Actual
    • B(I);
    • Threat
      • R(J)
    • Vars
      • Q(j);CHECK,OGATE,P_SPINQ(j),XR(J)::B(I),XQ(j)
      • Q(j);OGATE,P_PINR(J),XP(K)::B(I)+R(J),DCHECK,XQ(j)
      • R(e);XR(E)::S(B),XR(e)
      • R(g);OGATE,XP(G)::QAR2(A),XR(g)
      • B(a);XP(D)::S(B),XB(a)
      • S(b);OGATE,XP(C)::QAR2(A),XS(b)
      • S(k);OGATE,XP(K)::R(J),XS(k)
      • Q(j);::B(I)+R(J),DCHECK,XQ(j)
      • Q(j);OGATEB::B(I)+R(J),XQ(j)
      • Q(j);OGATEB,P_PINR(J)::B(I)+R(J),XQ(j)
      • R(e);N_GUARD::R1(E)
      • B(d);S_CUTR(e)::R1(E)
      • B(d);S_CUTQ(j)::S(F)
      • S(k);S_CUTQ(j)::S(F)
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