MESON Chess Problem Database

Problem Display
PID: 160200 (8/p1p5/rp6/Bk6/8/1B6/3Q4/7K w - - 0 1)

Groeneveld, Cornelis

British Chess Magazine, 2004

8/p1p5/rp6/Bk6/8/1B6/3Q4/7K

#2

4 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qd5#
    • 1...Kc6
      • 2.Qd5#
    • 1...c6
      • 2.Qb4#
  • Tries
    • 1.Bc4+?
      • 1...Ka4
        • 2.Qb4#
        • 2.Qa2#
      • 1...Kc5
        • 2.Qd5#
      • 1...Kc6
        • 2.Qd5#
      • 1...Kxc4!
    • 1.Qg5+?
      • 1...Kc6
        • 2.Qd5#
      • 1...c5!
    • 1.Qd3+?
      • 1...Kc5
        • 2.Qd5#
      • 1...Kc6
        • 2.Qd5#
      • 1...Kxa5!
    • 1.Qd7+?
      • 1...Kxa5
        • 2.Qa4#
      • 1...Kc5
        • 2.Qd5#
      • 1...c6!
  • Keys
    • 1.Qd4!
      • 1...Kxa5
        • 2.Qa4#
      • 1...Kc6
        • 2.Qd5#
      • 1...Rxa5
        • 2.Qc4#
      • 1...bxa5
        • 2.Ba4#
      • 1...c5
        • 2.Qa4#
      • 1...c6
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::QAR1(B)
    • K(a);S_FLIGHT::QAB1(B)
    • P(e);SBLOCK::QAR1(B)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XB(C)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,XB(D)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT,XB(D)::QAR1(B)
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • P(e);P_SPINP(e)
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT,XB(D)::QAR1(B)
      • K(a);S_FLIGHT::QAB1(B)
      • R(b);SBLOCK,XB(D)::QAB1(B)
      • P(c);SBLOCK,XB(D)::B(C)
      • P(e);SBLOCK::QAB1(B)
      • P(e);SBLOCK::QAR1(B)
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