MESON Chess Problem Database

Problem Display
PID: 2701 (6b1/7p/5p2/P1N2p2/3k1P2/5P2/B2K3p/4Q1b1 w - - 0 1)

Stubbs, Charles Francis

Quebec Chronicle, 1885

6b1/7p/5p2/P1N2p2/3k1P2/5P2/B2K3p/4Q1b1

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bf2
      • 2.Qxf2#
    • 1...Be3+
      • 2.Qxe3#
    • 1...Be6
      • 2.Sxe6#
    • 1...h1B
      • 2.Qxg1#
  • Tries
    • 1.Bxg8?
      • threat
        • 2.Sb3#
      • 1...Be3+
        • 2.Qxe3#
      • 1...Kxc5!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Sb3#
      • 1...Be3+
        • 2.Qxe3#
      • 1...Kxc5
        • 2.Qb6#
      • 1...Bxe6
        • 2.Sxe6#

There are these versions: 109459

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::QAB(A),XB(a)
    • B(a);CHECK,N_GUARD::QAB1(A),XB(a)
    • B(g);N_GUARD::S(G),XB(g)
    • P(b);N_GUARD::QAB(A),XB(a)
  • Tries
    • Try
      • B(B);XB(g)
      • Threat
        • S(G)
      • Vars
        • B(a);CHECK,N_GUARD::QAB1(A),XB(a)
      • Refutation
        • K(c);S_FLIGHT,XS(G)
  • Actual
    • Q(A);
    • Threat
      • S(G)
    • Vars
      • B(a);CHECK,N_GUARD::QAB1(A),XB(a)
      • K(c);OGATEB,S_FLIGHT,XS(G)::QAB1(A)
      • B(g);XQ(A)::S(G),XB(g)
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