MESON Chess Problem Database

Problem Display
PID: 168586 (8/8/8/1kB5/5p2/1N3Q2/8/3K4 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Best Problems, 2000

8/8/8/1kB5/5p2/1N3Q2/8/3K4

#2

4 + 2

6490 yacpdb 2018
3713 Snap 2025

SOLUTION

  • SOUND
  • Sets
    • 1...Ka6
      • 2.Qc6#
  • Tries
    • 1.Kd2?
      • 1...Kc4
        • 2.Qd3#
      • 1...Ka6
        • 2.Qc6#
      • 1...Ka4!
    • 1.Ke2?
      • 1...Kc4
        • 2.Qd3#
      • 1...Ka6
        • 2.Qc6#
      • 1...Ka4!
    • 1.Qe2+?
      • 1...Ka4
        • 2.Qc4#
      • 1...Kc6!
    • 1.Qe4?
      • 1...Ka6
        • 2.Qc6#
      • 1...f3!
    • 1.Qd5?
      • 1...Ka4
        • 2.Qc4#
      • 1...Ka6
        • 2.Qc6#
      • 1...f3!
    • 1.Qb7+?
      • 1...Ka4
        • 2.Qb4#
      • 1...Kc4!
    • 1.Qf1+?
      • 1...Ka4
        • 2.Qc4#
      • 1...Kc6!
    • 1.Qd3+?
      • 1...Ka4
        • 2.Qc4#
      • 1...Kc6!
  • Keys
    • 1.Kc2!
      • 1...Ka4
        • 2.Qc6#
      • 1...Kc4
        • 2.Qd3#
      • 1...Ka6
        • 2.Qc6#

This anticipates 282518(2002)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAR2(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • K(b);S_FLIGHT::QAR2(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • K(b);S_FLIGHT::QAR2(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(b);S_FLIGHT::QAR2(C)
      • Refutation
        • P(a);
    • Try
      • Q(C);
      • Vars
        • K(b);S_FLIGHT::QAR2(C)
      • Refutation
        • P(a);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(C)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Vars
      • K(b);S_FLIGHT::QAB(C)
      • K(b);S_FLIGHT::QAB1(C)
      • K(b);S_FLIGHT::QAR2(C)
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