MESON Chess Problem Database

Problem Display
PID: 187111 (2B5/5p2/8/2p5/4k3/5N2/5K2/Q7 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Landeszeitung fur die Luneburger Heide, 2001

(First published on Sat Oct 13 2001)

2B5/5p2/8/2p5/4k3/5N2/5K2/Q7

#2

4 + 3

16210 Problemschach-Jahrbuch (2001) 2002
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qe5#
    • 1...c4
      • 2.Qd4#
  • Tries
    • 1.Qc3?
      • threat
        • 2.Qc4#
      • 1...Kf4
        • 2.Qe5#
        • 2.Qe3#
        • 2.Qc4#
      • 1...c4
        • 2.Qd4#
        • 2.Qxc4#
      • 1...Kd5!
    • 1.Qb1+?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kd5!
    • 1.Qc1?
      • threat
        • 2.Qc4#
      • 1...Kd3
        • 2.Bf5#
      • 1...c4
        • 2.Qxc4#
      • 1...Kd5!
    • 1.Qf1?
      • threat
        • 2.Qc4#
      • 1...Kf4
        • 2.Qc4#
      • 1...c4
        • 2.Qxc4#
      • 1...Kd5!
    • 1.Qa2?
      • threat
        • 2.Qc4#
      • 1...Kf4
        • 2.Qc4#
      • 1...c4
        • 2.Qxc4#
      • 1...Kd3!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qc4#
      • 1...Kf4
        • 2.Qc4#
      • 1...Kd5
        • 2.Bb7#
      • 1...c4
        • 2.Qxc4#

Anticipated by 44214(1874)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAB1(A)
    • P(b);N_GUARD::QAR1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(a);S_FLIGHT::B(D)
        • P(b);::QAR2(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(a);P-FLIGHT::QAR(A)
        • P(b);::QAR2(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(a);P-FLIGHT::QAR(A)
        • P(b);::QAR2(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(a);P-FLIGHT::QAR(A)
      • K(a);S_FLIGHT::B(D)
      • P(b);::QAR2(A),XP(b)
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