MESON Chess Problem Database

Problem Display
PID: 168591 (8/K7/P7/1pk5/8/3Q4/6B1/1N6 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Best Problems, 2004

8/K7/P7/1pk5/8/3Q4/6B1/1N6

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Qd5#
  • Tries
    • 1.Kb7?
      • 1...b4
        • 2.Qd5#
      • 1...Kb4!
    • 1.Sd2?
      • 1...b4
        • 2.Sb3#
        • 2.Qd5#
      • 1...Kb4!
    • 1.Sa3?
      • 1...b4
        • 2.Qd5#
      • 1...Kb4!
    • 1.Sc3?
      • 1...b4
        • 2.Sa4#
        • 2.Qd5#
      • 1...Kb4!
    • 1.Bh1?
      • 1...b4
        • 2.Qd5#
      • 1...Kb4!
    • 1.Bf3?
      • 1...b4
        • 2.Qd5#
      • 1...Kb4!
    • 1.Be4?
      • 1...b4
        • 2.Qd5#
      • 1...Kb4!
    • 1.Bc6?
      • 1...Kb4
        • 2.Qxb5#
      • 1...b4
        • 2.Qd5#
      • 1...Kxc6!
    • 1.Bb7?
      • 1...b4
        • 2.Qd5#
      • 1...Kb4!
    • 1.Ba8?
      • 1...b4
        • 2.Qd5#
      • 1...Kb4!
    • 1.Qe4?
      • 1...b4
        • 2.Qd5#
      • 1...Kd6!
    • 1.Qa3+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kd4
        • 2.Qc3#
      • 1...b4!
    • 1.Qb3?
      • 1...Kd4
        • 2.Qc3#
      • 1...b4
        • 2.Qd5#
      • 1...Kd6!
  • Keys
    • 1.Qd2!
      • 1...Kc4
        • 2.Qc3#
      • 1...b4
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(a);SBLOCK::QAR1(C)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • P(a);SBLOCK::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(A);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • P(a);SBLOCK::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(A);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(B);
      • Vars
        • P(a);SBLOCK::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(B);
      • Vars
        • P(a);SBLOCK::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(B);
      • Vars
        • P(a);SBLOCK::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(B);
      • Vars
        • K(b);S_FLIGHT::QAR1(C),XP(a)
        • P(a);SBLOCK::QAR1(C)
      • Refutation
        • K(b);P-FLIGHT,XB(B)
    • Try
      • B(B);
      • Vars
        • P(a);SBLOCK::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(B);
      • Vars
        • P(a);SBLOCK::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(a);SBLOCK::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
        • K(b);S_FLIGHT::QAB1(C)
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • Q(C);
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • P(a);SBLOCK::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(b);P-FLIGHT::QAR1(C)
      • P(a);SBLOCK::QAR1(C)
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