MESON Chess Problem Database

Problem Display
PID: 232998 (8/8/8/3n4/6k1/5NN1/3Q2R1/K7 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Kudesnik, 2004

8/8/8/3n4/6k1/5NN1/3Q2R1/K7

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sh2+?
      • 1...Kh4
        • 2.Qh6#
      • 1...Kh3!
    • 1.Se5+?
      • 1...Kh4
        • 2.Qh6#
      • 1...Kh3!
    • 1.Se4+?
      • 1...Kxf3
        • 2.Sg5#
      • 1...Kh3
        • 2.Seg5#
        • 2.Rg3#
      • 1...Kh5
        • 2.Qg5#
      • 1...Kf5!
    • 1.Qg5+?
      • 1...Kh3
        • 2.Rh2#
      • 1...Kxf3!
    • 1.Qxd5?
      • threat
        • 2.Qf5#
      • 1...Kf4
        • 2.Qe4#
      • 1...Kh3!
  • Keys
    • 1.Sh5+!
      • 1...Kxf3
        • 2.Qe2#
      • 1...Kh3
        • 2.Rg3#
      • 1...Kf5
        • 2.Qxd5#
      • 1...Kxh5
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(D)::S(E)
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(C)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(B);XS(b)
      • Threat
        • QAB1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(E);CHECK
    • Vars
      • K(a);S_FLIGHT,XS(D)::QAB1(B)
      • K(a);S_FLIGHT::R1(C)
      • K(a);S_FLIGHT::QAR2(B),XS(b)
      • K(a);S_FLIGHT,XS(E)::QAR1(B)
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