MESON Chess Problem Database

Problem Display
PID: 145826 (4Q2n/qp3B1K/4Np2/4k3/b1pR1NP1/1pB5/3n4/8 w - - 0 1)

Bridgwater, Ralph Herbert

Birmingham Post, 1930

(First published on Tue May 13 1930)

4Q2n/qp3B1K/4Np2/4k3/b1pR1NP1/1pB5/3n4/8

#2

8 + 9

15372 Bridgwater Scrapbook 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Qb8
      • 2.Qxb8#
    • 1...Se4
      • 2.Rd5#
    • 1...Sg6
      • 2.Sxg6#
    • 1...Sxf7
      • 2.Sg6#
    • 1...f5
      • 2.Qxh8#
    • 1...b5
      • 2.Sc7#
  • Tries
    • 1.Qb5+?
      • 1...Qc5
        • 2.Qxc5#
      • 1...Bxb5!
    • 1.Qd8?
      • threat
        • 2.Qc7#
        • 2.Qd5#
        • 2.Qd6#
      • 1...Qxd4
        • 2.Qxd4#
        • 2.Qd5#
      • 1...Sxf7
        • 2.Qd5#
      • 1...Qb6
        • 2.Qd5#
      • 1...Qb8
        • 2.Rxc4#
        • 2.Qd5#
        • 2.Qxb8#
      • 1...Qa5
        • 2.Qd6#
      • 1...Qa6
        • 2.Rxc4#
        • 2.Qd5#
      • 1...Bc6
        • 2.Qc7#
        • 2.Qd6#
      • 1...Bd7
        • 2.Qc7#
      • 1...Se4
        • 2.Rd5#
        • 2.Qd5#
      • 1...f5
        • 2.Qxh8#
      • 1...b5
        • 2.Qd5#
        • 2.Qd6#
      • 1...b6
        • 2.Rxc4#
        • 2.Qd5#
        • 2.Qd6#
      • 1...Qc5!
  • Keys
    • 1.Bg6!
      • threat
        • 2.Rd5#
      • 1...b5+
        • 2.Sc7#
      • 1...b6+
        • 2.Rd7#
      • 1...Qxd4
        • 2.Qb8#
      • 1...Sxg6
        • 2.Sxg6#
      • 1...f5
        • 2.Qxh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(g);N_GUARD::QAB(H),XQ(g)
    • S(a);SBLOCK::B(A)+R(B),DCHECK
    • S(i);N_GUARD::S(C),XS(i)
    • S(i);N_GUARD,XB(F)::S(C)
    • P(f);OGATEB::QAB(H),XS(i)
    • P(h);P_PINB(F),S_CUTB(c)::QAR(H)+S(E)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • Q(g);N_GUARD,P_SPINQ(g)::QAR2(H),XQ(g)
      • Refutation
        • B(c);XQ(H)
    • Try
      • Q(H);
      • Threat
        • DUALS(3)
      • Vars
        • S(i);XB(F)::QAR1(H)
        • Q(g);::QAR1(H)
        • Q(g);::QAB1(H)
        • B(c);::QAB(H)
        • P(f);OGATEB::QAB(H),XS(i)
      • Refutation
        • Q(g);
  • Actual
    • B(F);
    • Threat
      • B(A)+R(B),DCHECK
    • Vars
      • P(h);CHECK,S_CUTB(c)::QAR(H)+S(E)
      • P(h);CHECK,S_CUTQ(g)::B(A)+R(B)
      • Q(g);N_GUARD,P_SPINQ(g),XR(B)::QAB(H)
      • S(i);XB(F)::S(C),XS(i)
      • P(f);OGATEB::QAB(H),XS(i)
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