MESON Chess Problem Database

Problem Display
PID: 271015 (r2Q4/3NK3/1B6/p2k4/PpR5/1b3P2/4n3/8 w - - 0 1)

Westbury, Eric Ernest

Birmingham Daily Post, 1902

r2Q4/3NK3/1B6/p2k4/PpR5/1b3P2/4n3/8

#2

7 + 6

17417 Westbury Scrapbooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Ra6
      • 2.Qg8#
    • 1...Ra7
      • 2.Qg8#
    • 1...Bxc4
      • 2.Qxa8#
    • 1...Sd4
      • 2.Rc5#
  • Tries
    • 1.Sf6+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Kxc4!
    • 1.Rd4+?
      • 1...Kc6
        • 2.Qc7#
        • 2.Qxa8#
      • 1...Sxd4!
    • 1.Qc7?
      • threat
        • 2.Sf6#
        • 2.Qc5#
        • 2.Qc6#
      • 1...Bxa4
        • 2.Sf6#
        • 2.Qc5#
      • 1...Bxc4
        • 2.Sf6#
        • 2.Qd6#
        • 2.Qc5#
        • 2.Qb7#
      • 1...Rc8
        • 2.Sf6#
      • 1...Rf8
        • 2.Qc5#
        • 2.Qc6#
      • 1...Sd4
        • 2.Sf6#
        • 2.Rxd4#
        • 2.Rc5#
        • 2.Qc5#
      • 1...Re8+!
    • 1.Qc8?
      • threat
        • 2.Qc5#
        • 2.Qc6#
      • 1...Bxa4
        • 2.Qc5#
      • 1...Bxc4
        • 2.Qb7#
        • 2.Qc5#
        • 2.Qxa8#
      • 1...Sd4
        • 2.Rxd4#
        • 2.Rc5#
        • 2.Qc5#
      • 1...Rxc8!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Sb6#
      • 1...Kxc4
        • 2.Se5#
      • 1...Bxc4
        • 2.Sb8#
      • 1...Sxd4
        • 2.Rc5#
      • 1...Ra7
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(f);N_GUARD::QAB(G)
    • R(f);N_GUARD,P_PINS(E)::QAB(G)
    • B(b);SBLOCK,XR(C)::QAB(G),XR(f)
    • S(a);SBLOCK::R1(C)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(G)
      • Refutation
        • K(e);S_FLIGHT,XR(C)
    • Try
      • R(C);CHECK
      • Refutation
        • S(a);XR(C)
    • Try
      • Q(G);
      • Threat
        • DUALS(3)
      • Vars
        • R(f);::S(E)
      • Refutation
        • R(f);CHECK
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);XP(B)::QAR1(G)
      • Refutation
        • R(f);XQ(G)
  • Actual
    • B(D);
    • Threat
      • QAR(G)+S(E),DCHECK
    • Vars
      • K(e);S_CUTR(f),S_FLIGHT,XR(C)::S(E)
      • B(b);SBLOCK,XR(C)::QAR(G)+S(E)
      • S(a);SBLOCK,XB(D)::R1(C)
      • R(f);N_GUARD,P_PINS(E)::QAB(G)
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