MESON Chess Problem Database

Problem Display
PID: 108335 (8/K3B3/B3p1p1/1p1pP3/3k2P1/5Q2/1P6/8 w - - 0 1)

Groeneveld, Cornelis

Phenix, 1989

8/K3B3/B3p1p1/1p1pP3/3k2P1/5Q2/1P6/8

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qc3#
    • 1...Kxe5
      • 2.Qe3#
    • 1...b4
      • 2.Qf4#
  • Tries
    • 1.Kb6?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kxe5
        • 2.Qe3#
      • 1...b4
        • 2.Qf4#
      • 1...g5!
    • 1.Kb7?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kxe5
        • 2.Qe3#
      • 1...b4
        • 2.Qf4#
      • 1...g5!
    • 1.Ka8?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kxe5
        • 2.Qe3#
      • 1...b4
        • 2.Qf4#
      • 1...g5!
    • 1.Kb8?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kxe5
        • 2.Qe3#
      • 1...b4
        • 2.Qf4#
      • 1...g5!
    • 1.Bxb5?
      • threat
        • 2.Qf4#
      • 1...Kxe5
        • 2.Qe3#
      • 1...g5!
    • 1.Bc5+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kxc5
        • 2.Qc3#
      • 1...Kxe5!
    • 1.Bd6?
      • 1...Kc4
        • 2.Qc3#
      • 1...b4
        • 2.Qd3#
        • 2.Qf4#
      • 1...g5!
    • 1.Qd3+?
      • 1...Kxe5
        • 2.Qe3#
      • 1...Kxd3!
    • 1.Qe3+?
      • 1...Kc4
        • 2.Qc3#
        • 2.b3#
      • 1...Kxe3!
    • 1.g5?
      • 1...Kc4
        • 2.Qc3#
      • 1...b4
        • 2.Qf4#
      • 1...Kxe5!
  • Keys
    • 1.Bg5!
      • 1...Kc4
        • 2.Qc3#
      • 1...Kc5
        • 2.Qc3#
      • 1...Kxe5
        • 2.Qf4#
      • 1...b4
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,P_SPINP(b)::QAR1(B)
    • K(a);S_FLIGHT,XP(D)::QAR2(B)
    • P(b);::QAR2(B)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR1(B)
        • K(a);S_FLIGHT,XP(D)::QAR2(B)
        • P(b);::QAR2(B)
      • Refutation
        • P(e);
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR1(B)
        • K(a);S_FLIGHT,XP(D)::QAR2(B)
        • P(b);::QAR2(B)
      • Refutation
        • P(e);
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR1(B)
        • K(a);S_FLIGHT,XP(D)::QAR2(B)
        • P(b);::QAR2(B)
      • Refutation
        • P(e);
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR1(B)
        • K(a);S_FLIGHT,XP(D)::QAR2(B)
        • P(b);::QAR2(B)
      • Refutation
        • P(e);
    • Try
      • B(E);XP(b)
      • Threat
        • QAR2(B)
      • Vars
        • K(a);S_FLIGHT,XP(D)::QAR2(B)
      • Refutation
        • P(e);
    • Try
      • B(G);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR1(B)
        • K(a);S_FLIGHT,XB(G)::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • B(G);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR1(B)
      • Refutation
        • P(e);
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT,XP(D)::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b),XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • P(C);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR1(B)
        • P(b);::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
  • Actual
    • B(G);
    • Vars
      • K(a);P-FLIGHT,P_SPINP(b)::QAR1(B)
      • K(a);S_FLIGHT::QAR2(B)
      • K(a);S_FLIGHT,XP(D)::QAB1(B)
      • P(b);::QAB1(B)
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