MESON Chess Problem Database

Problem Display
PID: 11936 (8/8/4K3/8/3Q1bk1/5p2/5R2/7R w - - 0 1)

Marandiuk, Mikhail Nazarovich

Prapor peremogi, 1973

8/8/4K3/8/3Q1bk1/5p2/5R2/7R

#2

4 + 3

3296 Shakhmatny zadachi miniaturi 1987
56 The Problemist 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Kg5
      • 2.Qg7#
  • Tries
    • 1.Rhh2?
      • 1...Kg5
        • 2.Qg7#
      • 1...Kg3!
    • 1.Rh3?
      • 1...Kg5
        • 2.Qg7#
      • 1...Kxh3!
    • 1.Rh6?
      • 1...Kg5
        • 2.Qg7#
      • 1...Kg3!
    • 1.Rh7?
      • 1...Kg5
        • 2.Qg7#
      • 1...Kg3!
    • 1.Rh8?
      • 1...Kg5
        • 2.Qg7#
      • 1...Kg3!
    • 1.Rff1?
      • threat
        • 2.Rfg1#
      • 1...Kg3
        • 2.Rfg1#
        • 2.Qg1#
      • 1...Kg5
        • 2.Qg7#
      • 1...f2!
    • 1.Ra2?
      • 1...Kg3
        • 2.Qg1#
      • 1...Kg5
        • 2.Qg7#
      • 1...f2!
    • 1.Rb2?
      • 1...Kg3
        • 2.Qg1#
      • 1...Kg5
        • 2.Qg7#
      • 1...f2!
    • 1.Rc2?
      • 1...Kg3
        • 2.Qg1#
      • 1...Kg5
        • 2.Qg7#
      • 1...f2!
    • 1.Rd2?
      • 1...Kg3
        • 2.Qg1#
      • 1...Kg5
        • 2.Qg7#
      • 1...f2!
    • 1.Rfh2?
      • threat
        • 2.Rg1#
      • 1...Kg3
        • 2.Qg1#
      • 1...Kg5
        • 2.Qg7#
      • 1...f2!
    • 1.Rxf3?
      • threat
        • 2.Qxf4#
      • 1...Kg5
        • 2.Qg7#
      • 1...Kxf3!
    • 1.Qf6?
      • threat
        • 2.Qh4#
      • 1...Kg3
        • 2.Qh4#
      • 1...Bg3
        • 2.Qf5#
      • 1...Bg5
        • 2.Qxf3#
      • 1...Bh2!
  • Keys
    • 1.Qe4!
      • 1...Kg3
        • 2.Qxf3#
      • 1...Kg5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
  • Tries
    • Try
      • R(A);
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
      • Refutation
        • K(c);N_SPINB(b),P-FLIGHT
    • Try
      • R(A);
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
      • Refutation
        • K(c);N_SPINB(b),S_FLIGHT,XR(A)
    • Try
      • R(A);
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
      • Refutation
        • K(c);N_SPINB(b),P-FLIGHT
    • Try
      • R(A);
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
      • Refutation
        • K(c);N_SPINB(b),P-FLIGHT
    • Try
      • R(A);
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
      • Refutation
        • K(c);N_SPINB(b),P-FLIGHT
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
      • Refutation
        • P(a);
    • Try
      • R(B);
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
      • Refutation
        • P(a);
    • Try
      • R(B);
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
      • Refutation
        • P(a);
    • Try
      • R(B);
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
      • Refutation
        • P(a);
    • Try
      • R(B);
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
      • Refutation
        • P(a);
    • Try
      • R(B);
      • Threat
        • R(A)
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
      • Refutation
        • P(a);
    • Try
      • R(B);XP(a)
      • Threat
        • QAR1(C),XB(b)
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
      • Refutation
        • K(c);N_SPINB(b),S_FLIGHT,XR(B)
    • Try
      • Q(C);N_PINB(b)
      • Threat
        • QAR1(C)
      • Vars
        • K(c);P-FLIGHT::QAB1(C)
        • B(b);SBLOCK::QAB1(C)
        • B(b);OGATE,SBLOCK::QAB1(C),XP(a)
      • Refutation
        • B(b);
  • Actual
    • Q(C);
    • Vars
      • K(c);N_SPINB(b),P-FLIGHT::QAR1(C),XP(a)
      • K(c);N_SPINB(b),P-FLIGHT::QAR1(C)
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