MESON Chess Problem Database

Problem Display
PID: 103296 (5N2/7R/B2p4/3kP3/KP6/4Q3/6b1/8 w - - 0 1)

Marandiuk, Mikhail Nazarovich

64 Shakhmatnoe obozrenie, 1976

5N2/7R/B2p4/3kP3/KP6/4Q3/6b1/8

#2

7 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Bb7#
  • Tries
    • 1.Bc4+?
      • 1...Kc6
        • 2.b5#
      • 1...Kxc4!
    • 1.Rh4?
      • threat
        • 2.Bb7#
      • 1...dxe5
        • 2.Qc5#
      • 1...Be4
        • 2.Qxe4#
      • 1...Kc6!
    • 1.Rh6?
      • threat
        • 2.Rxd6#
      • 1...Kc6
        • 2.Qc5#
      • 1...dxe5
        • 2.Qd3#
      • 1...Be4!
    • 1.Rc7?
      • threat
        • 2.Bc4#
        • 2.Bb7#
      • 1...dxe5
        • 2.Qd3#
      • 1...Bf1
        • 2.Bb7#
      • 1...Be4!
    • 1.Qd4+?
      • 1...Kc6
        • 2.Bb5#
        • 2.Bb7#
        • 2.Qxd6#
        • 2.b5#
      • 1...Kxd4!
    • 1.Qd3+?
      • 1...Kc6
        • 2.Qb5#
        • 2.Qxd6#
      • 1...Kxe5!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Rxd6#
      • 1...Kc6
        • 2.Bb7#
      • 1...Be4
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(E)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • K(b);S_FLIGHT::P(C)
      • Refutation
        • K(b);S_FLIGHT,XB(E)
    • Try
      • R(F);
      • Threat
        • B(E)
      • Vars
        • P(c);N_GUARD,SBLOCK,XP(D)::QAR1(A)
        • B(a);N_GUARD::QAB1(A),XB(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(F);
      • Threat
        • R1(F),XP(c)
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::QAR1(A)
        • P(c);SBLOCK,XP(D)::QAR2(A)
      • Refutation
        • B(a);
    • Try
      • R(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);SBLOCK,XP(D)::QAR2(A)
        • B(a);::B(E)
      • Refutation
        • B(a);
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);P-FLIGHT,XP(D)
  • Actual
    • R(F);P_PINP(c)
    • Threat
      • R1(F),XP(c)
    • Vars
      • K(b);N_SPINP(c),S_FLIGHT::B(E)
      • B(a);SBLOCK::QAR1(A)
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