MESON Chess Problem Database

Problem Display
PID: 103333 (8/8/p1K5/5Q2/1k6/2n5/P7/4B3 w - - 0 1)

Termaat, Nicolaas Ljsbrand Johanne

Dutch Federation, 1958

8/8/p1K5/5Q2/1k6/2n5/P7/4B3

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4+?
      • 1...Ka5
        • 2.Bxc3#
      • 1...Ka3!
    • 1.Qg4+?
      • 1...Ka5
        • 2.Bxc3#
      • 1...Ka3!
    • 1.Qf4+?
      • 1...Ka5
        • 2.Bxc3#
      • 1...Ka3!
    • 1.Qa5+?
      • 1...Kc4
        • 2.Qxc3#
      • 1...Kxa5!
    • 1.Qb5+?
      • 1...Ka3
        • 2.Qb3#
      • 1...axb5!
    • 1.Qd5?
      • 1...Ka3
        • 2.Qb3#
      • 1...a5
        • 2.Qb3#
      • 1...Ka4!
  • Keys
    • 1.Qc2!
      • 1...Ka3
        • 2.Qb3#
      • 1...Kc4
        • 2.Qxc3#
      • 1...Ka5
        • 2.Bxc3#
      • 1...a5
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::B(A),XS(a)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::B(A),XS(a)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::B(A),XS(a)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);N_SPINS(a),OGATE,P-FLIGHT::QAR1(C),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);N_SPINS(a),OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • P(c);XQ(C)
    • Try
      • Q(C);
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::QAR1(C)
        • P(c);SBLOCK::QAR1(C)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(b);N_SPINS(a),S_FLIGHT::QAR1(C)
      • K(b);P-FLIGHT::QAR1(C),XS(a)
      • K(b);S_FLIGHT::B(A),XS(a)
      • P(c);SBLOCK::QAR1(C)
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