MESON Chess Problem Database

Problem Display
PID: 232979 (8/8/1pN2Q2/1kpB4/8/8/8/2K5 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Kudesnik, 2000

8/8/1pN2Q2/1kpB4/8/8/8/2K5

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Bc4+?
      • 1...Ka4
        • 2.Qa1#
      • 1...Kxc4!
    • 1.Qb2+?
      • 1...Ka4
        • 2.Qb3#
      • 1...Ka6!
    • 1.Qc3?
      • threat
        • 2.Qc4#
      • 1...Ka4
        • 2.Qb3#
      • 1...c4
        • 2.Qxc4#
      • 1...Ka6!
    • 1.Qh4?
      • threat
        • 2.Qc4#
      • 1...c4
        • 2.Qxc4#
      • 1...Ka6!
    • 1.Qf4?
      • threat
        • 2.Qc4#
      • 1...c4
        • 2.Qxc4#
      • 1...Ka6!
  • Keys
    • 1.Qf1+!
      • 1...Ka4
        • 2.Qa6#
      • 1...c4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR(D)
      • Refutation
        • K(a);S_FLIGHT,XB(B)
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Threat
        • QAB1(D)
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
        • P(b);::QAB1(D),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Threat
        • QAB1(D)
      • Vars
        • P(b);::QAB1(D),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Threat
        • QAB1(D)
      • Vars
        • P(b);::QAB1(D),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);CHECK
    • Vars
      • K(a);OGATE,S_FLIGHT::QAR2(D)
      • P(b);P_SPINP(b)::QAB1(D),XP(b)
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