MESON Chess Problem Database

Problem Display
PID: 233000 (8/8/8/7B/8/K2Q1n2/2p5/2k5 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Kudesnik, 2004

8/8/8/7B/8/K2Q1n2/2p5/2k5

#2

3 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qf1+?
      • 1...Se1
        • 2.Qxe1#
      • 1...Kd2!
    • 1.Qe2?
      • 1...Se1
        • 2.Qxe1#
      • 1...Sg1
        • 2.Qe1#
      • 1...Sd2
        • 2.Qe1#
      • 1...Sh2
        • 2.Qe1#
      • 1...Sd4
        • 2.Qe1#
      • 1...Sh4
        • 2.Qe1#
      • 1...Se5
        • 2.Qe1#
      • 1...Sg5
        • 2.Qe1#
      • 1...Kb1!
    • 1.Qc3?
      • 1...Kb1
        • 2.Qb2#
      • 1...Se1
        • 2.Qxe1#
      • 1...Sg1
        • 2.Qe1#
      • 1...Sd2
        • 2.Qb2#
      • 1...Sh2
        • 2.Qe1#
      • 1...Sd4
        • 2.Qe1#
      • 1...Sh4
        • 2.Qe1#
      • 1...Se5
        • 2.Qe1#
      • 1...Sg5
        • 2.Qe1#
      • 1...Kd1!
    • 1.Qe3+?
      • 1...Kd1
        • 2.Bxf3#
      • 1...Sd2
        • 2.Qe1#
      • 1...Kb1!
  • Keys
    • 1.Ka2!
      • 1...Se1
        • 2.Qe3#
      • 1...Sg1
        • 2.Qe3#
      • 1...Sd2
        • 2.Qa3#
      • 1...Sh2
        • 2.Qe3#
      • 1...Sd4
        • 2.Qe3#
      • 1...Sh4
        • 2.Qe3#
      • 1...Se5
        • 2.Qe3#
      • 1...Sg5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAR2(B),XS(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • S(c);N_GUARD::QAR2(B),XS(c)
        • S(c);N_GUARD::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);P_PINP(b)
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(B)
        • S(c);N_GUARD::QAR2(B),XS(c)
        • S(c);N_GUARD::QAR2(B)
        • S(c);SBLOCK::QAB1(B)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,P_SPINS(c)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINS(c)::B(C),XS(c)
        • S(c);N_GUARD,P_SPINS(c)::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • S(c);N_GUARD::QAB(B)
      • S(c);SBLOCK::QAB(B)
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