MESON Chess Problem Database

Problem Display
PID: 103297 (KBN2R2/p2k4/3n2p1/2R5/8/4Q3/2r5/4rB2 w - - 0 1)

Marandiuk, Mikhail Nazarovich

64 Shakhmatnoe obozrenie, 1977

KBN2R2/p2k4/3n2p1/2R5/8/4Q3/2r5/4rB2

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qe7#
    • 1...Rb1
      • 2.Qe7#
    • 1...Rec1
      • 2.Qe7#
    • 1...Rd1
      • 2.Qe7#
    • 1...Rxf1
      • 2.Qe7#
    • 1...Ra2
      • 2.Rc7#
    • 1...Rb2
      • 2.Rc7#
    • 1...Rd2
      • 2.Rc7#
    • 1...Re2
      • 2.Rc7#
    • 1...Rf2
      • 2.Rc7#
    • 1...Rg2
      • 2.Rc7#
    • 1...Rh2
      • 2.Rc7#
    • 1...Sc4
      • 2.Bh3#
      • 2.Rc7#
    • 1...Se4
      • 2.Bh3#
      • 2.Qh3#
    • 1...Sb5
      • 2.Bh3#
      • 2.Bxb5#
    • 1...Sf5
      • 2.Bb5#
    • 1...Sb7
      • 2.Bh3#
      • 2.Bb5#
    • 1...Sf7
      • 2.Bh3#
      • 2.Bb5#
    • 1...Sxc8
      • 2.Bh3#
      • 2.Bb5#
    • 1...a5
      • 2.Sb6#
    • 1...a6
      • 2.Sb6#
  • Tries
    • 1.Qd2?
      • threat
        • 2.Qxd6#
      • 1...Ke6
        • 2.Qxd6#
      • 1...Rd1
        • 2.Bh3#
      • 1...Re6
        • 2.Bb5#
      • 1...Rxd2!
    • 1.Qd4?
      • threat
        • 2.Qxd6#
      • 1...Ke6
        • 2.Qxd6#
      • 1...Rd1
        • 2.Bh3#
      • 1...Re6
        • 2.Bb5#
      • 1...Rd2!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Rxd6#
      • 1...Kc6
        • 2.Rxd6#
      • 1...Rd1
        • 2.Qe8#
      • 1...Rd2
        • 2.Bb5#
      • 1...Rc6
        • 2.Bh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 13
  • Sets
    • R(a);N_GUARD::QAR1(B)
    • R(a);N_GUARD,XB(A)::QAR1(B)
    • R(b);N_GUARD::R1(C)
    • S(c);N_GUARD::B(A)
    • P(e);N_GUARD::S(F)
  • Tries
    • Try
      • Q(B);P_PINS(c)
      • Threat
        • QAR1(B),XS(c)
      • Vars
        • K(f);N_SPINS(c),S_FLIGHT::QAR1(B),XS(c)
        • R(a);N_GUARD::B(A)
        • R(a);SBLOCK::B(A)
      • Refutation
        • R(b);N_SPINS(c),XQ(B)
    • Try
      • Q(B);P_PINS(c)
      • Threat
        • QAR1(B),XS(c)
      • Vars
        • K(f);N_SPINS(c),S_FLIGHT::QAR1(B),XS(c)
        • R(a);N_GUARD::B(A)
        • R(a);SBLOCK::B(A)
      • Refutation
        • R(b);
  • Actual
    • R(C);P_PINS(c)
    • Threat
      • R1(C),XS(c)
    • Vars
      • K(f);N_SPINS(c),S_FLIGHT::R1(C),XS(c)
      • R(a);N_GUARD::QAB1(B)
      • R(b);N_GUARD::B(A)
      • R(b);SBLOCK::B(A)
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