MESON Chess Problem Database

Problem Display
PID: 232914 (8/2K5/8/kpN5/N7/8/8/7Q w - - 0 1)

Evdokimov, Aleksey

Kudesnik, 2009

8/2K5/8/kpN5/N7/8/8/7Q

#2

4 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3?
      • 1...b4
        • 2.Qa8#
        • 2.Qa1#
      • 1...Kb4!
    • 1.Qe4?
      • 1...bxa4
        • 2.Qxa4#
      • 1...b4!
    • 1.Qc6?
      • 1...bxa4
        • 2.Qxa4#
        • 2.Qb6#
      • 1...b4
        • 2.Sb3#
        • 2.Sb7#
        • 2.Qa6#
        • 2.Qb6#
      • 1...Kb4!
    • 1.Qb7?
      • 1...bxa4
        • 2.Qb6#
      • 1...b4
        • 2.Qa6#
        • 2.Qb6#
      • 1...Kb4!
    • 1.Qb1?
      • 1...bxa4
        • 2.Qb6#
      • 1...b4!
    • 1.Qh4?
      • 1...bxa4
        • 2.Qxa4#
      • 1...b4!
    • 1.Qh6?
      • 1...bxa4
        • 2.Qb6#
      • 1...b4
        • 2.Qa6#
        • 2.Qb6#
      • 1...Kb4!
  • Keys
    • 1.Qa1!
      • 1...Kb4
        • 2.Qc3#
      • 1...bxa4
        • 2.Qxa4#
      • 1...b4
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(b);OGATE,XS(B)::QAR1(A),XP(b)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(b);XS(B)::QAB1(A)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(b);OGATE,XS(B)::QAB1(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • P(b);OGATE,XS(B)::QAR1(A),XP(b)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • P(b);XS(B)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • P(b);OGATE,P_SPINP(b),XS(B)::QAR1(A),XP(b)
      • P(b);SBLOCK::QAR(A)+S(B)
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