MESON Chess Problem Database

Problem Display
PID: 11954 (1R6/2k5/7r/8/B7/8/KQ6/B7 w - - 0 1)

Moikin, Vladimir

Sp. Prize, Shakhmaty v SSSR, 1973

1R6/2k5/7r/8/B7/8/KQ6/B7

#2

5 + 2

2012 Miniature Chess Problems from Many Countries 1981
3295 Einfuhrung in die Welt des Schachproblem 1984
3296 Shakhmatny zadachi miniaturi 1987
3310 2345 Chess Problems 1997
145 StrateGems 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qe5#
    • 1...Rh1
      • 2.Qe5#
      • 2.Qb6#
    • 1...Rh2
      • 2.Qxh2#
    • 1...Rh3
      • 2.Qe5#
      • 2.Qb6#
    • 1...Rh4
      • 2.Qe5#
      • 2.Qb6#
    • 1...Rh5
      • 2.Qb6#
    • 1...Rb6
      • 2.Qxb6#
    • 1...Rd6
      • 2.Qb7#
    • 1...Rh7
      • 2.Qe5#
      • 2.Qb6#
    • 1...Rh8
      • 2.Qe5#
      • 2.Qb6#
  • Tries
    • 1.Rc8+?
      • 1...Kd6
        • 2.Qe5#
      • 1...Kxc8!
    • 1.Qg7+?
      • 1...Kd6
        • 2.Qe5#
      • 1...Kxb8!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qd8#
      • 1...Rh2+
        • 2.Qxh2#
      • 1...Kd6
        • 2.Qe5#
      • 1...Rxh8
        • 2.Be5#
      • 1...Rd6
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • K(b);S_FLIGHT::QAB1(C)
    • R(a);N_GUARD,P_PINQ(C)::QAB(C),XR(a)
    • R(a);N_GUARD::QAB1(C)
    • R(a);N_GUARD::QAB1(C),XR(a)
    • R(a);SBLOCK::QAR1(C)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT,XR(E)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT,XR(E)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • R(a);CHECK,OGATE::QAB(C),XR(a)
      • K(b);S_FLIGHT::QAB1(C)
      • R(a);N_GUARD,XQ(C)::B(A)
      • R(a);SBLOCK::QAR1(C)
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