MESON Chess Problem Database

Problem Display
PID: 272095 (3n2Q1/4N3/4p2q/2P1k3/1p2rR1r/1K1p4/5N1B/8 w - - 0 1)

Westbury, Eric Ernest

1st Prize, Tidskrift for Schack, 1906

3n2Q1/4N3/4p2q/2P1k3/1p2rR1r/1K1p4/5N1B/8

#2

7 + 8

17417 Westbury Scrapbooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4
      • 2.Qg7#
    • 1...Qg7
      • 2.Qxg7#
    • 1...Qh5
      • 2.Qg7#
    • 1...Qf6
      • 2.Rxe4#
    • 1...Re1
      • 2.Sxd3#
    • 1...Re2
      • 2.Sxd3#
    • 1...Rc4
      • 2.Sxd3#
    • 1...Rd4
      • 2.Rf5#
  • Tries
    • 1.Sg4+?
      • 1...Kd4
        • 2.Bg1#
      • 1...Rxg4!
    • 1.Qg7+?
      • 1...Qf6
        • 2.Rxe4#
        • 2.Qxf6#
      • 1...Qxg7!
    • 1.Qh8+?
      • 1...Qg7
        • 2.Qxg7#
      • 1...Qf6
        • 2.Rxe4#
        • 2.Qxf6#
      • 1...Qxh8!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Sxd3#
      • 1...Kd4
        • 2.Sg4#
      • 1...Qxf4
        • 2.Qg7#
      • 1...Rexf4
        • 2.Qa1#
      • 1...Rhxf4
        • 2.Sg4#
      • 1...Re3
        • 2.Qa1#
      • 1...Rd4
        • 2.Rf5#
      • 1...Rh3
        • 2.Sg4#
      • 1...d2
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • Q(g);N_GUARD,P_SPINQ(g),XR(D)::QAB(G)
    • Q(g);N_GUARD::QAB(G),XQ(g)
    • Q(g);N_GUARD::QAB(G)
    • Q(g);SBLOCK::B(B)+R(D),DCHECK,XR(c)
    • R(c);::S(A),XP(a)
    • R(c);SBLOCK::B(B)+R(D),DCHECK
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(e);N_GUARD,P_SPINR(c),S_CUTR(d),S_FLIGHT::B(B)
      • Refutation
        • R(d);XS(A)
    • Try
      • Q(G);CHECK
      • Refutation
        • Q(g);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • Q(g);N_GUARD,P_SPINQ(g)::QAB(G),XQ(g)
      • Refutation
        • Q(g);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • S(A),XP(a)
    • Vars
      • K(e);P_SPINR(c),S_CUTR(d),S_FLIGHT::QAB(G)+S(A)
      • Q(g);N_GUARD,P_SPINQ(g),XR(D)::QAB(G)
      • R(c);N_GUARD,P_SPINR(c),XR(D)::QAB(G)
      • R(d);N_GUARD,P_SPINR(d),XR(D)::S(A)
      • R(c);N_GUARD::QAB(G)
      • R(c);SBLOCK::B(B)+R(D),DCHECK
      • R(d);N_GUARD::S(A)
      • P(a);::S(A)
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