MESON Chess Problem Database

Problem Display
PID: 11224 (2B2K2/r2p2p1/1QN1N1pb/2p1Bk2/5p2/5P2/8/8 w - - 0 1)

Westbury, Eric Ernest

Chess, 1937

2B2K2/r2p2p1/1QN1N1pb/2p1Bk2/5p2/5P2/8/8

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bg5
      • 2.Sxg7#
    • 1...d5
      • 2.Qb1#
    • 1...d6
      • 2.Qb1#
  • Tries
    • 1.Sxg7+?
      • 1...Kg5
        • 2.Qd8#
      • 1...Bxg7+!
    • 1.Ba1?
      • threat
        • 2.Se7#
      • 1...Kxe6
        • 2.Se7#
      • 1...dxc6
        • 2.Qxc5#
        • 2.Qb1#
      • 1...dxe6
        • 2.Qxc5#
      • 1...Bg5
        • 2.Sxg7#
      • 1...d5
        • 2.Qb1#
      • 1...d6
        • 2.Qb1#
      • 1...Rxa1!
    • 1.Bd4?
      • threat
        • 2.Se7#
      • 1...Kxe6
        • 2.Se7#
      • 1...dxc6
        • 2.Qxc5#
        • 2.Qb1#
      • 1...dxe6
        • 2.Qxc5#
      • 1...Bg5
        • 2.Sxg7#
      • 1...d5
        • 2.Qb1#
      • 1...d6
        • 2.Qb1#
      • 1...cxd4!
  • Keys
    • 1.Bc3!
      • threat
        • 2.Se7#
      • 1...Kxe6
        • 2.Se7#
      • 1...dxc6
        • 2.Qxc5#
        • 2.Qb1#
      • 1...dxe6
        • 2.Qxc5#
      • 1...Bg5
        • 2.Sxg7#
      • 1...d5
        • 2.Qb1#
      • 1...d6
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(e);N_GUARD,SBLOCK::S(E),XP(h)
    • P(g);::QAB(C)
  • Tries
    • Try
      • S(E);CHECK,P_PINP(g),P_SPINS(E),XP(h)
      • Vars
        • K(c);N_SPINP(g),P-FLIGHT::QAB(C)
      • Refutation
        • B(e);CHECK,XS(E)
    • Try
      • B(B);
      • Threat
        • S(D)
      • Vars
        • K(c);P_SPINP(g),S_FLIGHT,XS(E)::QAR(C)+S(D)
        • P(g);N_GUARD,P_SPINP(g),XS(E)::QAR(C),XP(b)
        • B(e);N_GUARD,SBLOCK::S(E),XP(h)
        • P(g);::QAB(C)
      • Refutation
        • R(f);XB(B)
    • Try
      • B(B);
      • Threat
        • S(D)
      • Vars
        • K(c);P_SPINP(g),S_FLIGHT,XS(E)::QAR(C)+S(D)
        • P(g);N_GUARD,P_SPINP(g),XS(E)::QAR(C),XP(b)
        • B(e);N_GUARD,SBLOCK::S(E),XP(h)
        • P(g);::QAB(C)
      • Refutation
        • P(b);XB(B)
  • Actual
    • B(B);
    • Threat
      • S(D)
    • Vars
      • K(c);P_SPINP(g),S_FLIGHT,XS(E)::QAR(C)+S(D)
      • P(g);N_GUARD,P_SPINP(g),XS(E)::QAR(C),XP(b)
      • B(e);N_GUARD,SBLOCK::S(E),XP(h)
      • P(g);::QAB(C)
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