MESON Chess Problem Database

Problem Display
PID: 68105 (1bN1br2/1K1p1k2/3B2R1/7P/6Pp/Q6q/P1p3p1/8 w - - 0 1)

Groeneveld, Cornelis

Phenix, 1998

1bN1br2/1K1p1k2/3B2R1/7P/6Pp/Q6q/P1p3p1/8

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Qb3#
      • 2.Qf3#
    • 1...Qh2
      • 2.Qb3#
    • 1...Qb3+
      • 2.Qxb3#
    • 1...Qf3+
      • 2.Qxf3#
  • Tries
    • 1.Qc3?
      • threat
        • 2.Qf6#
        • 2.Qg7#
        • 2.Qc4#
      • 1...Qf3+
        • 2.Qxf3#
      • 1...Qxg4
        • 2.Qf6#
        • 2.Qg7#
      • 1...c1Q
        • 2.Qf6#
        • 2.Qg7#
      • 1...c1R
        • 2.Qf6#
        • 2.Qg7#
      • 1...Qd3
        • 2.Qf6#
        • 2.Qg7#
      • 1...Qe3
        • 2.Qf6#
        • 2.Qg7#
      • 1...Rg8
        • 2.Qf6#
        • 2.Qc4#
      • 1...Qxc3!
    • 1.Qe3?
      • threat
        • 2.Qf4#
        • 2.Qe7#
      • 1...Qf3+
        • 2.Qxf3#
      • 1...Qxg4
        • 2.Qe7#
      • 1...Bxd6
        • 2.Sxd6#
      • 1...c1Q
        • 2.Qe7#
      • 1...c1B
        • 2.Qe7#
      • 1...Qh2
        • 2.Qb3#
        • 2.Qe7#
      • 1...Qg3
        • 2.Qe7#
      • 1...Qxe3!
    • 1.Qxh3?
      • threat
        • 2.Qb3#
        • 2.Qf3#
      • 1...Bxd6
        • 2.Qb3#
      • 1...c1S
        • 2.Qf3#
      • 1...c1B
        • 2.Qb3#
      • 1...c1R
        • 2.Qf3#
      • 1...g1S
        • 2.Qb3#
      • 1...c1Q!
  • Keys
    • 1.Bg3!
      • threat
        • 2.Qe7#
      • 1...Bd6
        • 2.Qb3#
      • 1...d6
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(c);N_GUARD::QAB(B)
    • Q(c);CHECK,N_GUARD::QAB(B),XQ(c)
    • Q(c);CHECK,N_GUARD::QAR(B),XQ(c)
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • Q(c);CHECK,N_GUARD::QAR(B),XQ(c)
      • Refutation
        • Q(c);XQ(B)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);CHECK,N_GUARD::QAR(B),XQ(c)
        • Q(c);XP(C)::QAR1(B)
        • B(g);XB(E)::S(H),XB(g)
        • P(a);::QAR1(B)
        • Q(c);::QAR1(B)
      • Refutation
        • Q(c);XQ(B)
    • Try
      • Q(B);XQ(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(g);XB(E)::QAB(B)
        • P(a);::QAR(B)
        • P(a);::QAB(B)
        • P(b);::QAB(B)
      • Refutation
        • P(a);
  • Actual
    • B(E);
    • Threat
      • QAR1(B)
    • Vars
      • B(g);S_CUTP(e)::QAB(B)
      • P(e);S_CUTB(g)::QAR(B)
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