MESON Chess Problem Database

Problem Display
PID: 103249 (B7/2kp4/2NR4/K7/8/8/7Q/8 w - - 0 1)

Shumarin, Vladimir Pavlovich

Original, 1975

B7/2kp4/2NR4/K7/8/8/7Q/8

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rd1+?
      • 1...Kc8
        • 2.Qb8#
      • 1...d6!
    • 1.Rd2+?
      • 1...Kc8
        • 2.Qb8#
      • 1...d6!
    • 1.Rd3+?
      • 1...Kc8
        • 2.Qb8#
      • 1...d6!
    • 1.Rd4+?
      • 1...Kc8
        • 2.Qb8#
      • 1...d6!
    • 1.Rd5+?
      • 1...Kc8
        • 2.Qb8#
      • 1...d6!
    • 1.Re6+?
      • 1...Kc8
        • 2.Re8#
        • 2.Qb8#
      • 1...d6!
    • 1.Rf6+?
      • 1...Kc8
        • 2.Rf8#
        • 2.Qb8#
      • 1...d6!
    • 1.Rg6+?
      • 1...Kc8
        • 2.Rg8#
        • 2.Qb8#
      • 1...d6!
    • 1.Rh6+?
      • 1...Kc8
        • 2.Rh8#
        • 2.Qb8#
      • 1...d6!
    • 1.Rxd7+?
      • 1...Kc8
        • 2.Rc7#
        • 2.Rd8#
        • 2.Qc7#
      • 1...Kxd7!
    • 1.Qb2?
      • threat
        • 2.Qb8#
      • 1...Kxd6
        • 2.Qe5#
      • 1...Kc8
        • 2.Qb7#
        • 2.Qb8#
      • 1...dxc6!
    • 1.Qh4?
      • 1...Kc8
        • 2.Qd8#
      • 1...dxc6
        • 2.Qd8#
      • 1...Kxd6!
    • 1.Qh7?
      • threat
        • 2.Qxd7#
      • 1...Kc8
        • 2.Qxd7#
      • 1...Kxd6!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qb8#
      • 1...Kxd6
        • 2.Qe5#
      • 1...dxc6
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • R(D);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • R(D);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • R(D);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • R(D);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • R(D);CHECK
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • R(D);CHECK
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • R(D);CHECK
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • R(D);CHECK
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • R(D);CHECK,XP(b)
      • Refutation
        • K(a);P-FLIGHT,XR(D)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(D)::QAB1(A)
      • Refutation
        • P(b);XS(C)
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • P(b);XS(C)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • Q(A);P_PINP(b)
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAB1(A),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT,XR(D)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(a);OGATEB,S_FLIGHT,XR(D)::QAB1(A)
      • P(b);XS(C)::QAB1(A)
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