MESON Chess Problem Database

Problem Display
PID: 200288 (8/1B4Bp/4p3/1Rp1N3/Qb2PkpK/5Prb/5P2/5n2 w - - 0 1)

van Gool, Johann Christoffel

Probleemblad, 1980

8/1B4Bp/4p3/1Rp1N3/Qb2PkpK/5Prb/5P2/5n2

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.fxg3#
    • 1...gxf3
      • 2.Sd3#
    • 1...c4
      • 2.Bh6#
  • Tries
    • 1.Rxc5?
      • threat
        • 2.Bh6#
      • 1...gxf3
        • 2.Sd3#
      • 1...h6
        • 2.Bxh6#
      • 1...Bxc5!
    • 1.Qd1?
      • threat
        • 2.Sd3#
      • 1...c4
        • 2.Bh6#
      • 1...Rxf3!
    • 1.Qa1?
      • threat
        • 2.Bh6#
      • 1...gxf3
        • 2.Sd3#
      • 1...h6
        • 2.Bxh6#
      • 1...Bc3!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Qf8#
      • 1...gxf3
        • 2.Sd3#
      • 1...Se3
        • 2.fxg3#
      • 1...c4
        • 2.Bh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,SBLOCK::P(A),XR(b)
    • P(f);SBLOCK,XP(B)::S(G)
    • P(g);::B(I)
  • Tries
    • Try
      • R(F);XP(g)
      • Threat
        • B(I)
      • Vars
        • P(f);SBLOCK,XP(B)::S(G)
        • P(i);::B(I),XP(i)
      • Refutation
        • B(d);XR(F)
    • Try
      • Q(C);
      • Threat
        • S(G)
      • Vars
        • P(g);::B(I)
      • Refutation
        • R(b);XP(B)
    • Try
      • Q(C);
      • Threat
        • B(I)
      • Vars
        • P(f);SBLOCK,XP(B)::S(G)
        • P(i);::B(I),XP(i)
      • Refutation
        • B(d);
  • Actual
    • Q(C);
    • Threat
      • QAR(C)
    • Vars
      • P(f);SBLOCK,XP(B)::S(G)
      • S(a);N_GUARD,SBLOCK::P(A),XR(b)
      • P(g);::B(I)
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