MESON Chess Problem Database

Problem Display
PID: 200052 (2n5/Qp6/n1p5/5p2/3P1BP1/1P6/2B2K2/7k w - - 0 1)

Bouchez, Laurent

Suomen Shakki, 1990

2n5/Qp6/n1p5/5p2/3P1BP1/1P6/2B2K2/7k

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Qa1#
    • 1...Sc5
      • 2.Qa1#
    • 1...Sc7
      • 2.Qa1#
    • 1...Sb8
      • 2.Qa1#
    • 1...fxg4
      • 2.Be4#
    • 1...c5
      • 2.Qxb7#
    • 1...b5
      • 2.Qh7#
    • 1...b6
      • 2.Qh7#
  • Tries
    • 1.Bxf5?
      • threat
        • 2.Be4#
      • 1...Sc5
        • 2.Qa1#
      • 1...Sd6!
    • 1.Qxa6?
      • threat
        • 2.Qf1#
        • 2.Qa1#
      • 1...b5
        • 2.Qa1#
        • 2.Qxc6#
      • 1...bxa6!
    • 1.gxf5?
      • threat
        • 2.Be4#
      • 1...Sc5
        • 2.Qa1#
      • 1...Sd6!
  • Keys
    • 1.Qa8!
      • 1...fxg4
        • 2.Be4#
      • 1...Sb4
        • 2.Qa1#
      • 1...Sc5
        • 2.Qa1#
      • 1...Sc7
        • 2.Qa1#
      • 1...Sb8
        • 2.Qa1#
      • 1...Sb6
        • 2.Qh8#
      • 1...Sd6
        • 2.Qh8#
      • 1...Sa7
        • 2.Qh8#
      • 1...Se7
        • 2.Qh8#
      • 1...c5
        • 2.Qxb7#
      • 1...b5
        • 2.Qxc6#
      • 1...b6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE::QAB1(G)
    • P(b);N_GUARD,XP(F)::B(A)
    • P(d);OGATEB::QAB(G),XP(e)
    • P(e);OGATE::QAR(G)
  • Tries
    • Try
      • B(A);XP(b)
      • Threat
        • B(A)
      • Vars
        • S(c);OGATE::QAB1(G)
      • Refutation
        • S(f);
    • Try
      • Q(G);XS(c)
      • Threat
        • DUALS(2)
      • Refutation
        • P(e);XQ(G)
    • Try
      • P(F);XP(b)
      • Threat
        • B(A)
      • Vars
        • S(c);OGATE::QAB1(G)
      • Refutation
        • S(f);
  • Actual
    • Q(G);
    • Vars
      • P(b);N_GUARD,XP(F)::B(A)
      • S(c);OGATE::QAB1(G)
      • S(f);OGATE::QAB(G)
      • P(d);OGATEB,P_SPINP(e)::QAB(G),XP(e)
      • P(e);OGATE,P_SPINP(d)::QAB(G),XP(d)
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